[ { "category": "ECO A00", "type": "Opening", "name_opening": "Anderssen Opening", "moves": [ "a3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Ware Opening", "moves": [ "a4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Sodium Attack", "moves": [ "Na3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Van Geet Opening", "moves": [ "Nc3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Polish Opening", "moves": [ "b4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Saragossa Opening", "moves": [ "c3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Mieses Opening", "moves": [ "d3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Van't Kruijs Opening", "moves": [ "e3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Gedult's Opening", "moves": [ "f3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Amar Opening", "moves": [ "Nh3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Hungarian Opening", "moves": [ "g3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Grob Opening", "moves": [ "g4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Clemenz Opening", "moves": [ "h3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Kadas Opening", "moves": [ "h4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Laroche Gambit", "moves": [ "Nc3", "b5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Reversed Nimzowitsch", "moves": [ "Nc3", "e5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Symmetrical Variation", "moves": [ "b4", "b5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Grigorian Variation", "moves": [ "b4", "Nc6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Birmingham Gambit", "moves": [ "b4", "c5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Outflank Variation", "moves": [ "b4", "c6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Dutch Defense", "moves": [ "b4", "f5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Karniewski Variation", "moves": [ "b4", "Nh6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Mieses Opening", "variantion_name": "Reversed Rat", "moves": [ "d3", "e5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Sicilian Invitation", "moves": [ "g3", "c5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Dutch Defense", "moves": [ "g3", "f5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Myers Defense", "moves": [ "g3", "g5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Symmetrical Variation", "moves": [ "g3", "g6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Indian Defense", "moves": [ "g3", "Nf6" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Lasker Simul Special", "moves": [ "g3", "h5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Alessi Gambit", "moves": [ "g4", "f5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Double Grob", "moves": [ "g4", "g5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Schneider Gambit", "moves": [ "h4", "g5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Anderssen Opening", "variantion_name": "Polish Gambit", "moves": [ "a3", "a5", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Battambang Variation", "moves": [ "a3", "e5", "Nc3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Ware Opening", "variantion_name": "Meadow Hay Trap", "moves": [ "a4", "e5", "Ra3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Crab Opening", "moves": [ "a4", "e5", "h4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Sodium Attack", "variantion_name": "Chenoboskion Variation", "moves": [ "Na3", "g6", "g4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Twyble Attack", "moves": [ "Nc3", "c5", "Rb1" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "D�sseldorf Gambit", "moves": [ "Nc3", "c5", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Reversed Mexican Defense", "moves": [ "Nc3", "d5", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Myers Attack", "moves": [ "Nc3", "g6", "h4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "T�bingen Gambit", "moves": [ "Nc3", "Nf6", "g4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Labahn Attack", "moves": [ "b4", "c6", "e4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Bugayev Attack", "moves": [ "b4", "e5", "a3" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Valencia Opening", "moves": [ "d3", "e5", "Nd2" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Mieses Opening", "variantion_name": "Myers Spike Attack", "moves": [ "d3", "g6", "g4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Englund Gambit Declined, Reversed French", "moves": [ "e3", "e5", "d4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Barnes Opening", "variantion_name": "Hammerschlag", "moves": [ "f3", "e5", "Kf2" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Reversed Alekhine", "moves": [ "g3", "e5", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit", "moves": [ "g4", "d5", "Bg2" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Double Grob, Coca-Cola Gambit", "moves": [ "g4", "g5", "f4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Global Opening", "moves": [ "h3", "e5", "a3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Clemenz Opening", "variantion_name": "Spike Lee Gambit", "moves": [ "h3", "h5", "g4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Kadas Gambit", "moves": [ "h4", "c5", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Beginner's Trap", "moves": [ "h4", "d5", "Rh3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Ware Opening", "variantion_name": "Wing Gambit", "moves": [ "a4", "b5", "axb5", "Bb7" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Damhaug Gambit", "moves": [ "Nc3", "d5", "f4", "e5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Warsteiner Gambit", "moves": [ "Nc3", "d5", "f4", "g5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Billockus-Johansen Gambit", "moves": [ "Nc3", "e5", "Nf3", "Bc5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Baltic Defense", "moves": [ "b4", "d5", "Bb2", "Bf5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "German Defense", "moves": [ "b4", "d5", "Bb2", "Qd6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Wolferts Gambit", "moves": [ "b4", "e5", "Bb2", "c5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Czech Defense", "moves": [ "b4", "e5", "Bb2", "d6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "King's Indian Variation", "moves": [ "b4", "Nf6", "Bb2", "g6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Barnes Opening", "variantion_name": "Fool's Mate", "moves": [ "f3", "e5", "g4", "Qh4#" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Reversed Modern Defense", "moves": [ "g3", "d5", "Bg2", "c5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Slav Formation", "moves": [ "g3", "d5", "Bg2", "c6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Catalan Formation", "moves": [ "g3", "d5", "Bg2", "e6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Van Kuijk Gambit", "moves": [ "g3", "h5", "Nf3", "h4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit Declined", "moves": [ "g4", "d5", "Bg2", "c6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "London Defense", "moves": [ "g4", "e5", "h3", "Nc6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Creepy Crawly Formation", "variantion_name": "Classical Defense", "moves": [ "h3", "d5", "a3", "e5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Venezolana Variation", "moves": [ "Nc3", "d5", "d3", "Nf6", "g3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Caro-Kann Variation, St. Patrick's Attack", "moves": [ "Nc3", "d5", "e4", "c6", "h3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Dunst-Perrenet Gambit", "moves": [ "Nc3", "d5", "e4", "dxe4", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Hector Gambit", "moves": [ "Nc3", "d5", "e4", "dxe4", "Bc4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Dougherty Gambit", "moves": [ "Nc3", "d5", "e4", "dxe4", "f3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Napoleon Attack", "moves": [ "Nc3", "e5", "Nf3", "Nc6", "d4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Kluever Gambit", "moves": [ "Nc3", "f5", "e4", "fxe4", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Myers Variation", "moves": [ "b4", "d5", "Bb2", "c6", "a4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Bugayev Advance Variation", "moves": [ "b4", "e5", "Bb2", "f6", "b5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Tartakower Gambit", "moves": [ "b4", "e5", "Bb2", "f6", "e4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "King's Indian Variation, Schiffler Attack", "moves": [ "b4", "Nf6", "Bb2", "g6", "e4" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Venezolana Opening", "moves": [ "d3", "c5", "Nc3", "Nc6", "g3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van't Kruijs Opening", "variantion_name": "Bouncing Bishop Variation", "moves": [ "e3", "e5", "Bc4", "b5", "Bb3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Barnes Opening", "variantion_name": "Gedult Gambit", "moves": [ "f3", "f5", "e4", "fxe4", "Nc3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Amar Opening", "variantion_name": "Paris Gambit", "moves": [ "Nh3", "d5", "g3", "e5", "f4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "B�cker Gambit", "moves": [ "g3", "d5", "Bg2", "e5", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Reversed Norwegian Defense", "moves": [ "g3", "e5", "Nf3", "e4", "Nh4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Zilbermints Gambit", "moves": [ "g4", "d5", "e4", "dxe4", "Nc3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Spike Attack", "moves": [ "g4", "d5", "Bg2", "c6", "g5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit, Fritz Gambit", "moves": [ "g4", "d5", "Bg2", "Bxg4", "c4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit, Basman Gambit", "moves": [ "g4", "d5", "Bg2", "h5", "gxh5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Spike, Hurst Attack", "moves": [ "g4", "e5", "Bg2", "d5", "c4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Myers Variation", "moves": [ "h4", "d5", "d4", "c5", "e4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Kadas Gambit", "moves": [ "h4", "e5", "d4", "exd4", "c3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Steinbok Gambit", "moves": [ "h4", "f5", "e4", "fxe4", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Ware Opening", "variantion_name": "Cologne Gambit", "moves": [ "a4", "b6", "d4", "d5", "Nc3", "Nd7" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Sodium Attack", "variantion_name": "Durkin Gambit", "moves": [ "Na3", "e5", "Nc4", "Nc6", "e4", "f5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Sleipnir Gambit", "moves": [ "Nc3", "d5", "e3", "e5", "d4", "Bb4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Melleby Gambit", "moves": [ "Nc3", "d5", "f4", "d4", "Ne4", "c5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Pfeiffer Gambit", "moves": [ "Nc3", "d5", "f4", "d4", "Ne4", "e5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Hergert Gambit", "moves": [ "Nc3", "d6", "f4", "e5", "fxe5", "Nc6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Hulsemann Gambit", "moves": [ "Nc3", "e5", "e3", "d5", "Qh5", "Be6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Liebig Gambit", "moves": [ "Nc3", "e5", "e3", "d5", "Qh5", "Nf6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Queenside Defense", "moves": [ "b4", "e6", "Bb2", "Nf6", "b5", "a6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Queen's Indian Variation", "moves": [ "b4", "e6", "Bb2", "Nf6", "b5", "b6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Pachman Gambit", "moves": [ "g3", "f5", "e4", "fxe4", "Qh5+", "g6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Zilbermints Gambit, Schiller Defense", "moves": [ "g4", "d5", "e4", "dxe4", "Nc3", "h5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Romford Countergambit", "moves": [ "g4", "d5", "Bg2", "Bxg4", "c4", "d4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Keene Defense", "moves": [ "g4", "d5", "h3", "e5", "Bg2", "c6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Ware Opening", "variantion_name": "Ware Gambit", "moves": [ "a4", "e5", "a5", "d5", "e3", "f5", "a6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Novosibirsk Variation", "moves": [ "Nc3", "c5", "d4", "cxd4", "Qxd4", "Nc6", "Qh4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Sicilian Two Knights", "moves": [ "Nc3", "c5", "Nf3", "Nc6", "d4", "cxd4", "Nxd4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Pfeiffer Gambit, Sleipnir Countergambit", "moves": [ "Nc3", "d5", "f4", "d4", "Ne4", "e5", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Gladbacher Gambit", "moves": [ "Nc3", "e5", "b3", "d5", "e4", "dxe4", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Reversed Scandinavian", "moves": [ "Nc3", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qa4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Schuehler Gambit", "moves": [ "b4", "c6", "Bb2", "a5", "b5", "cxb5", "e4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Schiffler-Sokolsky Variation", "moves": [ "b4", "e6", "Bb2", "Nf6", "b5", "d5", "e3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van't Kruijs Opening", "variantion_name": "Keoni-Hiva Gambit, Alua Variation", "moves": [ "e3", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van't Kruijs Opening", "variantion_name": "Keoni-Hiva Gambit, Ekolu Variation", "moves": [ "e3", "e5", "Nc3", "d5", "f4", "exf4", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van't Kruijs Opening", "variantion_name": "Keoni-Hiva Gambit, Akahi Variation", "moves": [ "e3", "e5", "Nc3", "Nf6", "f4", "exf4", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Barnes Opening", "variantion_name": "Gedult Gambit", "moves": [ "f3", "d5", "e4", "g6", "d4", "dxe4", "c3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Winterberg Gambit", "moves": [ "g3", "d5", "Bg2", "e5", "c4", "dxc4", "b3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Reversed Brooklyn Defense, Brooklyn Benko Gambit", "moves": [ "g3", "e5", "Nf3", "e4", "Ng1", "Nf6", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Zilbermints Gambit, Zilbermints-Hartlaub Gambit", "moves": [ "g4", "d5", "e4", "dxe4", "Nc3", "e5", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit, Richter-Grob Gambit", "moves": [ "g4", "d5", "Bg2", "c6", "c4", "dxc4", "b3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit, Keres Gambit", "moves": [ "g4", "d5", "Bg2", "e5", "d4", "exd4", "c3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Kadas Opening", "variantion_name": "Kadas Gambit", "moves": [ "h4", "d5", "d4", "c5", "Nf3", "cxd4", "c3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Colle System, King's Indian Variation", "moves": [ "e3", "d6", "d4", "g6", "Nf3", "Bg7", "Bd3", "Nf6" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Amsterdam Attack", "moves": [ "e3", "e5", "c4", "d6", "Nc3", "Nc6", "b3", "Nf6" ] }, { "category": "ECO A00", "type": "Opening", "name_opening": "Amar Gambit", "moves": [ "Nh3", "d5", "g3", "e5", "f4", "Bxh3", "Bxh3", "exf4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Sodium Attack", "variantion_name": "Celadon Variation", "moves": [ "Na3", "e5", "d3", "Bxa3", "bxa3", "d5", "e3", "c5", "Rb1" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Orangutan-Diemer Gambit", "moves": [ "b4", "d5", "Bb2", "Qd6", "a3", "e5", "e4", "dxe4", "f3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van't Kruijs Opening", "variantion_name": "Keoni-Hiva Gambit Delayed", "moves": [ "e3", "d5", "Nc3", "Nf6", "a3", "e5", "f4", "exf4", "Nf3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Burk Gambit", "moves": [ "g3", "e5", "a3", "d5", "Nf3", "e4", "Nh4", "Be7", "d3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Paris Gambit", "moves": [ "g3", "e5", "Nh3", "d5", "f4", "Bxh3", "Bxh3", "exf4", "O-O" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Asten Gambit", "moves": [ "g3", "Nc6", "Nc3", "d5", "d4", "e5", "dxe5", "d4", "Ne4", "f5" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Grob Gambit, Fritz Gambit, Romford Countergambit", "moves": [ "g4", "d5", "Bg2", "Bxg4", "c4", "d4", "Bxb7", "Nd7", "Bxa8", "Qxa8" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Jendrossek Gambit", "moves": [ "Nc3", "d5", "f4", "d4", "Ne4", "f5", "Nf2", "Nf6", "Nf3", "c5", "b4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Rooks Swap Line", "moves": [ "b4", "e6", "Bb2", "Nf6", "b5", "a6", "a4", "axb5", "axb5", "Rxa1", "Bxa1" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Orangutan-Hartlaub Gambit", "moves": [ "b4", "Nf6", "Bb2", "e6", "a3", "c6", "d3", "a5", "bxa5", "d5", "e4" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Amar Opening", "variantion_name": "Gent Gambit", "moves": [ "Nh3", "d5", "g3", "e5", "f4", "Bxh3", "Bxh3", "exf4", "O-O", "fxg3", "hxg3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Tartakower Gambit, Brinckmann Variation", "moves": [ "b4", "e5", "Bb2", "f6", "e4", "Bxb4", "Bc4", "Nc6", "f4", "Qe7", "f5", "g6" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Grob Opening", "variantion_name": "Keene Defense, Main Line", "moves": [ "g4", "d5", "h3", "e5", "Bg2", "c6", "d4", "e4", "c4", "Bd6", "Nc3", "Ne7" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Formation", "variantion_name": "Hippopotamus Attack", "moves": [ "a3", "e5", "b3", "d5", "c3", "Nf6", "d3", "Nc6", "e3", "Bd6", "f3", "O-O", "g3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Formation", "variantion_name": "Shy Attack", "moves": [ "a3", "e5", "g3", "d5", "Bg2", "Nf6", "d3", "Nc6", "Nd2", "Bd6", "e3", "O-O", "h3" ] }, { "category": "ECO A00", "type": "Variation", "name_opening": "Formation", "variantion_name": "Cabbage Attack", "moves": [ "c3", "e5", "a3", "d5", "b3", "Nf6", "Bb2", "Nc6", "a4", "Bd6", "g3", "O-O", "e3" ] }, { "category": "ECO A01", "type": "Opening", "name_opening": "Nimzo-Larsen Attack", "moves": [ "b3" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzowitsch-Larsen Attack", "variantion_name": "Polish Variation", "moves": [ "b3", "b5" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Symmetrical Variation", "moves": [ "b3", "b6" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "English Variation", "moves": [ "b3", "c5" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Classical Variation", "moves": [ "b3", "d5" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Modern Variation", "moves": [ "b3", "e5" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Dutch Variation", "moves": [ "b3", "f5" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Indian Variation", "moves": [ "b3", "Nf6" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Graz Attack", "moves": [ "b3", "d5", "Ba3" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Modern Variation", "moves": [ "b3", "e5", "Bb2" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Modern Variation", "moves": [ "b3", "e5", "Bb2", "Nc6" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Modern Variation", "moves": [ "b3", "e5", "Bb2", "Nc6", "e3" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Pachman Gambit", "moves": [ "b3", "e5", "Bb2", "Nc6", "f4" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Ringelbach Gambit", "moves": [ "b3", "f5", "Bb2", "e6", "e4" ] }, { "category": "ECO A01", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Spike Variation", "moves": [ "b3", "Nf6", "Bb2", "g6", "g4" ] }, { "category": "ECO A02", "type": "Opening", "name_opening": "Bird Opening", "moves": [ "f4" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Myers Defense", "moves": [ "f4", "b5" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "From's Gambit", "moves": [ "f4", "e5" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Hobbs Gambit", "moves": [ "f4", "g5" ] }, { "category": "ECO A02", "type": "Opening", "name_opening": "Bird Opening", "moves": [ "f4", "Nf6" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Horsefly Defense", "moves": [ "f4", "Nh6" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "From's Gambit, Bahr Gambit", "moves": [ "f4", "e5", "Nc3" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Wagner-Zwitersch Gambit", "moves": [ "f4", "f5", "e4" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Mujannah", "moves": [ "f4", "Nf6", "c4" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Schlechter Gambit", "moves": [ "f4", "e5", "fxe5", "Nc6" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Lasker Gambit", "moves": [ "f4", "e5", "fxe5", "f6" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Platz Gambit", "moves": [ "f4", "e5", "fxe5", "Ne7" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "System", "variantion_name": "Double Duck Formation", "moves": [ "f4", "f5", "d4", "d5" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Hobbs-Zilbermints Gambit", "moves": [ "f4", "h6", "Nf3", "g5" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Batavo-Polish Attack", "moves": [ "f4", "Nf6", "Nf3", "g6", "b4" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "From's Gambit, Langheld Gambit", "moves": [ "f4", "e5", "fxe5", "d6", "exd6", "Nf6" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Siegener Gambit", "moves": [ "f4", "e5", "d4", "exd4", "Nf3", "c5", "c3" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Swiss Gambit", "moves": [ "f4", "f5", "e4", "fxe4", "Nc3", "Nf6", "g4" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "From's Gambit, Lasker Variation", "moves": [ "f4", "e5", "fxe5", "d6", "exd6", "Bxd6", "Nf3", "g5" ] }, { "category": "ECO A02", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "From's Gambit, Lipke Variation", "moves": [ "f4", "e5", "fxe5", "d6", "exd6", "Bxd6", "Nf3", "Nh6", "d4" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Dutch Variation", "moves": [ "f4", "d5" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Sturm Gambit", "moves": [ "f4", "d5", "c4" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Williams Gambit", "moves": [ "f4", "d5", "e4" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Dutch Variation, Dudweiler Gambit", "moves": [ "f4", "d5", "g4" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Lasker Variation", "moves": [ "f4", "d5", "Nf3", "Nf6", "e3", "c5" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Williams Gambit", "moves": [ "f4", "d5", "e4", "dxe4", "Nc3", "Nf6", "Qe2" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Williams-Zilbermints Gambit", "moves": [ "f4", "d5", "e4", "dxe4", "Nc3", "Nf6", "Nge2" ] }, { "category": "ECO A03", "type": "Variation", "name_opening": "Bird Opening", "variantion_name": "Thomas Gambit", "moves": [ "f4", "d5", "b3", "Nf6", "Bb2", "d4", "Nf3", "c5", "e3" ] }, { "category": "ECO A04", "type": "Opening", "name_opening": "R�ti Opening", "moves": [ "Nf3" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Ware Defense", "moves": [ "Nf3", "a5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "St. George Defense", "moves": [ "Nf3", "a6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Polish Defense", "moves": [ "Nf3", "b5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Queenside Fianchetto Variation", "moves": [ "Nf3", "b6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Black Mustang Defense", "moves": [ "Nf3", "Nc6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Sicilian Invitation", "moves": [ "Nf3", "c5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Slav Invitation", "moves": [ "Nf3", "c6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Pirc Invitation", "moves": [ "Nf3", "d6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Ross Gambit", "moves": [ "Nf3", "e5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Queen's Gambit Invitation", "moves": [ "Nf3", "e6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Dutch Variation", "moves": [ "Nf3", "f5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Arctic Defense", "moves": [ "Nf3", "f6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Herrstrom Gambit", "moves": [ "Nf3", "g5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Kingside Fianchetto", "moves": [ "Nf3", "g6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Basman Defense", "moves": [ "Nf3", "h6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Lisitsyn Gambit", "moves": [ "Nf3", "f5", "e4" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Defense", "variantion_name": "Drunken Cavalry Variation", "moves": [ "Nf3", "Na6", "e4", "Nh6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Vos Gambit", "moves": [ "Nf3", "d6", "d4", "e5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Wade Defense", "moves": [ "Nf3", "d6", "e4", "Bg4" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Speelsmet Gambit", "moves": [ "Nf3", "c5", "d4", "cxd4", "e3" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Lisitsyn Gambit Deferred", "moves": [ "Nf3", "f5", "d3", "Nf6", "e4" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "The Walrus", "moves": [ "Nf3", "e5", "Nxe5", "Nc6", "Nxc6", "dxc6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Arctic Defense, Drunken Knight Variation", "moves": [ "Nf3", "f6", "e4", "Nh6", "d4", "Nf7" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Semi-Averbakh Variation, Pterodactyl Variation", "moves": [ "Nf3", "c5", "c4", "g6", "d4", "Bg7", "e4", "Qa5+" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Semi-Averbakh Variation, Polish Variation", "moves": [ "Nf3", "c5", "c4", "g6", "d4", "Bg7", "e4", "Qb6" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Colle System", "variantion_name": "Rhamphorhynchus Variation", "moves": [ "Nf3", "c5", "e3", "g6", "d4", "Bg7", "dxc5", "Qa5+" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Shabalov Gambit", "moves": [ "Nf3", "e6", "c4", "a6", "Nc3", "c5", "g3", "b5" ] }, { "category": "ECO A04", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Semi-Averbakh Variation, Pterodactyl Variation Accepted", "moves": [ "Nf3", "g6", "d4", "Bg7", "e4", "d6", "c4", "c5", "dxc5", "Qa5+" ] }, { "category": "ECO A05", "type": "Opening", "name_opening": "R�ti Opening", "moves": [ "Nf3", "Nf6" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Nimzo-Larsen Variation", "moves": [ "Nf3", "Nf6", "b3" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "Zukertort System", "moves": [ "Nf3", "Nf6", "b4" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Quiet System", "moves": [ "Nf3", "Nf6", "e3" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Lemberger Gambit", "moves": [ "Nf3", "Nf6", "e4" ] }, { "category": "ECO A05", "type": "Opening", "name_opening": "Zukertort Opening", "moves": [ "Nf3", "Nf6", "Nc3", "Nc6" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Spassky Variation", "moves": [ "Nf3", "Nf6", "g3", "b5" ] }, { "category": "ECO A05", "type": "Opening", "name_opening": "King's Indian Attack", "moves": [ "Nf3", "Nf6", "g3", "d5" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Symmetrical Defense", "moves": [ "Nf3", "Nf6", "g3", "g6" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Myers Polish Attack", "moves": [ "Nf3", "Nf6", "a4", "g6", "b4" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Smyslov Variation", "moves": [ "Nf3", "Nf6", "g3", "g6", "b4" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Wahls Defense", "moves": [ "Nf3", "Nf6", "g3", "g6", "Bg2", "Bg7", "O-O", "O-O", "d3", "d5" ] }, { "category": "ECO A05", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Double Fianchetto Attack", "moves": [ "Nf3", "Nf6", "g3", "g6", "b3", "Bg7", "Bb2", "O-O", "Bg2", "d6", "O-O" ] }, { "category": "ECO A06", "type": "Opening", "name_opening": "R�ti Opening", "moves": [ "Nf3", "d5" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Santasiere's Folly", "moves": [ "b4", "d5", "Nf3" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Tennison Gambit", "moves": [ "e4", "d5", "Nf3" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "The Potato", "moves": [ "Nf3", "d5", "a4" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Classical Variation", "moves": [ "Nf3", "d5", "b3" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Old Indian Attack", "moves": [ "Nf3", "d5", "d3" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Ampel Variation", "moves": [ "Nf3", "d5", "Rg1" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Norfolk Gambit", "moves": [ "Nf3", "d5", "b3", "c5", "e4" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Regina-Nu Gambit", "moves": [ "Nf3", "d5", "b3", "c5", "c4", "dxc4", "Nc3" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Nimzo-Larsen Attack", "variantion_name": "Norfolk Gambit", "moves": [ "Nf3", "d5", "b3", "Nf6", "Bb2", "c5", "e4" ] }, { "category": "ECO A06", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Pachman Gambit", "moves": [ "Nf3", "d5", "e3", "c5", "c4", "dxc4", "b3" ] }, { "category": "ECO A07", "type": "Opening", "name_opening": "King's Indian Attack", "moves": [ "Nf3", "d5", "g3" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Sicilian Variation", "moves": [ "Nf3", "d5", "g3", "c5" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Keres Variation", "moves": [ "Nf3", "d5", "g3", "Bg4" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Omega-Delta Gambit", "moves": [ "Nf3", "d5", "g3", "e5" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Double Fianchetto", "moves": [ "Nf3", "d5", "g3", "g6" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "Hungarian Opening", "variantion_name": "Wiedenhagen-Beta Gambit", "moves": [ "g3", "d5", "Nf3", "g5" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Keres Variation", "moves": [ "Nf3", "d5", "g3", "Bg4", "Bg2", "Nd7" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Gr�nfeld Formation", "moves": [ "g3", "d5", "Nf3", "g6", "c4", "Nf6" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Yugoslav Variation", "moves": [ "Nf3", "Nf6", "g3", "d5", "Bg2", "c6", "O-O", "Bg4" ] }, { "category": "ECO A07", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Pachman System", "moves": [ "Nf3", "d5", "g3", "g6", "Bg2", "Bg7", "O-O", "e5", "d3", "Ne7" ] }, { "category": "ECO A08", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Sicilian Variation", "moves": [ "Nf3", "d5", "g3", "c5", "Bg2" ] }, { "category": "ECO A08", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "French Variation", "moves": [ "Nf3", "d5", "g3", "c5", "Bg2", "Nc6" ] }, { "category": "ECO A08", "type": "Variation", "name_opening": "Zukertort Opening", "variantion_name": "Gr�nfeld Reversed", "moves": [ "Nf3", "d5", "g3", "c5", "Bg2", "Nc6", "d4", "e6", "O-O" ] }, { "category": "ECO A08", "type": "Variation", "name_opening": "King's Indian Attack", "variantion_name": "Sicilian Variation", "moves": [ "e4", "e6", "d3", "d5", "Nd2", "Nf6", "Ngf3", "c5", "g3", "Nc6", "Bg2", "Be7", "O-O", "O-O", "Re1" ] }, { "category": "ECO A09", "type": "Opening", "name_opening": "R�ti Opening", "moves": [ "Nf3", "d5", "c4" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Zilbermints Gambit", "moves": [ "Nf3", "d5", "c4", "b5" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "R�ti Accepted", "moves": [ "Nf3", "d5", "c4", "dxc4" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Advance Variation", "moves": [ "Nf3", "d5", "c4", "d4" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Penguin Variation", "moves": [ "Nf3", "d5", "c4", "d4", "Rg1" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "R�ti Gambit, Keres Variation", "moves": [ "Nf3", "d5", "c4", "dxc4", "e3", "Be6" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Advance Variation, Michel Gambit", "moves": [ "Nf3", "d5", "c4", "d4", "b4", "c5" ] }, { "category": "ECO A09", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Reversed Blumenfeld Gambit", "moves": [ "Nf3", "d5", "c4", "d4", "e3", "c5", "b4" ] }, { "category": "ECO A10", "type": "Opening", "name_opening": "English Opening", "moves": [ "c4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Jaenisch Gambit", "moves": [ "c4", "b5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Lithuanian Variation", "moves": [ "c4", "Nc6" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Scandinavian Defense", "moves": [ "c4", "d5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Dutch Defense", "moves": [ "c4", "f5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Great Snake Variation", "moves": [ "c4", "g6" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Dutch Defense, Hickmann Gambit", "moves": [ "c4", "f5", "e4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Wade Gambit", "moves": [ "c4", "f5", "g4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Scandinavian Defense, L�hn Gambit", "moves": [ "c4", "d5", "cxd5", "e6" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Scandinavian Defense, Schulz Gambit", "moves": [ "c4", "d5", "cxd5", "Nf6" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Zilbermints Gambit", "moves": [ "c4", "g5", "d4", "e5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Myers Variation", "moves": [ "c4", "g5", "d4", "Bg7" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Adorjan Defense", "moves": [ "c4", "g6", "e4", "e5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Dutch Variation, Ferenc Gambit", "moves": [ "c4", "f5", "Nc3", "Nf6", "e4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Dutch Variation, Chabanon Gambit", "moves": [ "c4", "f5", "Nf3", "d6", "e4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Scandinavian Defense, Malvinas Variation", "moves": [ "c4", "d5", "cxd5", "Qxd5", "Nc3", "Qa5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Neo-Modern Defense", "moves": [ "c4", "g6", "e4", "Bg7", "d4", "e5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Porcupine Variation", "moves": [ "c4", "f5", "Nc3", "Nf6", "e4", "fxe4", "g4" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "Dutch Defense", "variantion_name": "Krause Variation", "moves": [ "c4", "f5", "Nc3", "Nf6", "Nf3", "Nc6", "d4", "d6" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Averbakh Variation, Pseudo-S�misch", "moves": [ "c4", "g6", "e4", "Bg7", "d4", "d6", "Be3", "Nf6", "f3" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Semi-Classical Variation, Exchange Variation", "moves": [ "c4", "g6", "Nc3", "Bg7", "e3", "Nf6", "d4", "O-O", "Nf3", "d6", "Be2", "Nbd7", "O-O", "e5", "dxe5", "dxe5" ] }, { "category": "ECO A10", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Botvinnik System, Prickly Pawn Pass System", "moves": [ "c4", "g6", "Nc3", "Bg7", "g3", "Nf6", "Bg2", "O-O", "e4", "d6", "Nge2", "e5", "O-O", "c6", "d3", "a6" ] }, { "category": "ECO A11", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Caro-Kann Defensive System", "moves": [ "c4", "c6" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Bogoljubov Variation", "moves": [ "Nf3", "d5", "c4", "c6", "b3" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Bogoljubov Variation", "moves": [ "Nf3", "d5", "c4", "c6", "b3", "Bg4" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Bogoljubov Variation", "moves": [ "Nf3", "Nf6", "c4", "c6", "b3", "d5", "Bb2" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Capablanca Variation", "moves": [ "c4", "Nf6", "Nf3", "c6", "b3", "d5", "Bb2", "Bg4" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, London Defensive System", "moves": [ "c4", "Nf6", "g3", "c6", "Nf3", "d5", "b3", "Bf5" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Torre System", "moves": [ "c4", "Nf6", "g3", "c6", "Nf3", "d5", "b3", "Bg4" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Bled Variation", "moves": [ "Nf3", "d5", "b3", "Nf6", "Bb2", "g6", "c4", "c6" ] }, { "category": "ECO A12", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, New York System", "moves": [ "Nf3", "Nf6", "c4", "c6", "b3", "d5", "Bb2", "Bf5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense", "moves": [ "c4", "e6" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense", "moves": [ "c4", "e6", "Nf3" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "Horwitz Defense", "variantion_name": "Zilbermints Gambit", "moves": [ "c4", "e6", "d4", "e5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense", "moves": [ "c4", "e6", "Nf3", "d5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Catalan Defense", "moves": [ "Nf3", "d5", "c4", "e6", "g3", "c5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Kurajica Defense", "moves": [ "Nf3", "d5", "c4", "e6", "g3", "c6" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Neo-Catalan", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Romanishin Gambit", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "a6", "Bg2", "b5" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Catalan Defense, Semi-Slav Defense", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "Bg2", "c6" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Catalan Defense Accepted", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "Bg2", "dxc4" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Bogoljubov Defense", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "Bg2", "Bd6" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Neo-Catalan Declined", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "Bg2", "Be7" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Catalan Defense", "moves": [ "Nf3", "d5", "c4", "e6", "g3", "b6", "Bg2", "Bb7", "O-O" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Wimpy System", "moves": [ "Nf3", "Nf6", "c4", "e6", "b3", "d5", "Bb2", "c5", "e3" ] }, { "category": "ECO A13", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Tarrasch Defense", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "b3", "c5", "Bg2", "Nc6", "O-O", "Be7" ] }, { "category": "ECO A14", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Neo-Catalan Declined", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "d5", "Bg2", "Be7", "O-O" ] }, { "category": "ECO A14", "type": "Variation", "name_opening": "R�ti Opening", "variantion_name": "Anglo-Slav Variation, Bogoljubov Variation, Stonewall Line", "moves": [ "Nf3", "d5", "c4", "e6", "g3", "Nf6", "Bg2", "Be7", "O-O", "O-O", "b3", "c6", "Bb2" ] }, { "category": "ECO A14", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Agincourt Defense, Keres Defense", "moves": [ "c4", "c5", "Nf3", "Nf6", "Nc3", "e6", "g3", "d5", "cxd5", "Nxd5", "Bg2", "Nc6", "O-O", "Be7" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense", "moves": [ "c4", "Nf6" ] }, { "category": "ECO A15", "type": "Opening", "name_opening": "English Orangutan", "moves": [ "c4", "Nf6", "b4" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, King's Knight Variation", "moves": [ "Nf3", "Nf6", "c4" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Queen's Indian Formation", "moves": [ "Nf3", "Nf6", "c4", "b6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Scandinavian Defense", "moves": [ "Nf3", "Nf6", "c4", "d5" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Old Indian Formation", "moves": [ "Nf3", "Nf6", "c4", "d6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, King's Indian Formation", "moves": [ "Nf3", "Nf6", "c4", "g6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Scandinavian Defense, Exchange Variation", "moves": [ "Nf3", "Nf6", "c4", "d5", "cxd5", "Nxd5" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Romanishin Variation", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "a6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Slav Formation", "moves": [ "Nf3", "Nf6", "c4", "g6", "g3", "c6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Anti-Anti-Gr�nfeld", "moves": [ "Nf3", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, King's Indian Formation, Double Fianchetto", "moves": [ "Nf3", "Nf6", "c4", "b6", "g3", "Bb7", "Bg2", "g6" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Queen's Indian Formation", "moves": [ "Nf3", "Nf6", "c4", "e6", "g3", "b6", "Bg2", "Bb7" ] }, { "category": "ECO A15", "type": "Variation", "name_opening": "Polish Opening", "variantion_name": "King's Indian Variation, Sokolsky Attack", "moves": [ "Nf3", "Nf6", "c4", "g6", "b4", "Bg7", "Bb2", "O-O", "e3", "d6", "d4" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Queen's Knight Variation", "moves": [ "c4", "Nf6", "Nc3" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Gr�nfeld Defense", "moves": [ "c4", "Nf6", "Nc3", "d5" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Anglo-Gr�nfeld Variation", "moves": [ "c4", "Nf6", "Nc3", "d5", "cxd5", "Nxd5", "Nf3" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Anglo-Gr�nfeld Variation", "moves": [ "c4", "Nf6", "Nc3", "d5", "cxd5", "Nxd5", "g3", "g6", "Bg2", "Nb6" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Anglo-Gr�nfeld Variation", "moves": [ "c4", "Nf6", "Nc3", "d5", "cxd5", "Nxd5", "g3", "g6", "Bg2", "Nxc3" ] }, { "category": "ECO A16", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Gr�nfeld Defense, Korchnoi Variation", "moves": [ "Nf3", "Nf6", "c4", "g6", "Nc3", "d5", "cxd5", "Nxd5", "g3", "Bg7", "Bg2", "e5" ] }, { "category": "ECO A17", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Hedgehog System", "moves": [ "c4", "Nf6", "Nc3", "e6" ] }, { "category": "ECO A17", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Queen's Indian Formation", "moves": [ "c4", "Nf6", "Nc3", "e6", "Nf3", "b6" ] }, { "category": "ECO A17", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Nimzo-English", "moves": [ "Nf3", "Nf6", "c4", "e6", "Nc3", "Bb4" ] }, { "category": "ECO A17", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Zvjaginsev-Krasenkow Attack", "moves": [ "c4", "Nf6", "Nc3", "e6", "Nf3", "Bb4", "g4" ] }, { "category": "ECO A17", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Queen's Indian Variation", "moves": [ "c4", "Nf6", "Nc3", "e6", "Nf3", "b6", "e4", "Bb7", "Bd3" ] }, { "category": "ECO A18", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Mikenas-Carls Variation", "moves": [ "c4", "Nf6", "Nc3", "e6", "e4" ] }, { "category": "ECO A18", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Mikenas-Carls Variation", "moves": [ "c4", "Nf6", "Nc3", "e6", "e4", "Nc6" ] }, { "category": "ECO A18", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Mikenas-Carls Variation", "moves": [ "c4", "Nf6", "Nc3", "e6", "e4", "d5", "e5" ] }, { "category": "ECO A19", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Mikenas-Carls, Sicilian", "moves": [ "c4", "Nf6", "Nc3", "e6", "e4", "c5" ] }, { "category": "ECO A19", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit", "moves": [ "c4", "Nf6", "Nc3", "e6", "e4", "c5", "e5", "Ng8" ] }, { "category": "ECO A20", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation", "moves": [ "c4", "e5" ] }, { "category": "ECO A20", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Nimzowitsch Variation", "moves": [ "c4", "e5", "Nf3" ] }, { "category": "ECO A20", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Nimzowitsch-Flohr Variation", "moves": [ "c4", "e5", "Nf3", "e4" ] }, { "category": "ECO A20", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Drill Variation", "moves": [ "c4", "e5", "g3", "h5" ] }, { "category": "ECO A20", "type": "Variation", "name_opening": "English Openings", "variantion_name": "King's English, Kahiko-Hula Gambit", "moves": [ "c4", "e5", "e3", "Nf6", "f4", "exf4", "Nf3" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Reversed Sicilian", "moves": [ "c4", "e5", "Nc3" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Kramnik-Shirov Counterattack", "moves": [ "c4", "e5", "Nc3", "Bb4" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation", "moves": [ "c4", "e5", "Nc3", "d6", "Nf3" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Smyslov Defense", "moves": [ "c4", "e5", "Nc3", "d6", "Nf3", "Bg4" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Keres Defense", "moves": [ "c4", "e5", "Nc3", "d6", "g3", "c6" ] }, { "category": "ECO A21", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Troger Defense", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "d6", "Bg2", "Be6" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Two Knights Variation", "moves": [ "c4", "e5", "Nc3", "Nf6" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English, Mazedonisch", "moves": [ "c4", "e5", "Nc3", "Nf6", "f4" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Carls-Bremen System", "moves": [ "c4", "e5", "Nc3", "Nf6", "g3" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Two Knights Variation, Reversed Dragon", "moves": [ "c4", "e5", "Nc3", "Nf6", "g3", "d5" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Two Knights Variation, Smyslov System", "moves": [ "c4", "e5", "Nc3", "Nf6", "g3", "Bb4" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Bellon Gambit", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "e4", "Ng5", "b5" ] }, { "category": "ECO A22", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English, Erbenheimer Gambit", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "e4", "Ng5", "Ng4" ] }, { "category": "ECO A23", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Two Knights Variation, Keres Variation", "moves": [ "c4", "e5", "Nc3", "Nf6", "g3", "c6" ] }, { "category": "ECO A24", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Two Knights Variation, Fianchetto Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "g3", "g6" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Reversed Closed Sicilian", "moves": [ "c4", "e5", "Nc3", "Nc6" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Taimanov Variation", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Hungarian Attack", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "Rb1" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Closed System", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "d3" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Closed, Taimanov Variation", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Rb1", "Nh6", "Bg2", "Bg7" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Bremen-Hort Variation", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "e3", "d6", "Nge2", "Be6" ] }, { "category": "ECO A25", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Closed, Taimanov Variation", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "e3", "d6", "Nge2", "Nh6" ] }, { "category": "ECO A26", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Closed System, Full Symmetry", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "d3", "d6" ] }, { "category": "ECO A26", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Botvinnik System", "moves": [ "c4", "e5", "Nc3", "Nc6", "g3", "g6", "Bg2", "Bg7", "d3", "d6", "e4" ] }, { "category": "ECO A27", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Three Knights System", "moves": [ "c4", "e5", "Nc3", "Nc6", "Nf3" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Korchnoi Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "a3" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Flexible Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "d3" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Quiet Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "e3" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Four Knights System, Nimzowitsch Variation", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "e4" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Bradley Beach Variation", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "d4", "e4" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Quiet Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "e3", "Bb4", "Qc2", "Bxc3" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Quiet Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "e3", "Bb4", "Qc2", "O-O", "Nd5", "Re8", "Qf5" ] }, { "category": "ECO A28", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "d4", "exd4", "Nxd4", "Bb4", "Bg5", "h6", "Bh4", "Bxc3+", "bxc3", "Ne5" ] }, { "category": "ECO A29", "type": "Variation", "name_opening": "English Opening", "variantion_name": "King's English Variation, Four Knights Variation, Fianchetto Line", "moves": [ "c4", "e5", "Nc3", "Nf6", "Nf3", "Nc6", "g3" ] }, { "category": "ECO A30", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation", "moves": [ "c4", "c5" ] }, { "category": "ECO A30", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Wing Gambit", "moves": [ "c4", "c5", "b4" ] }, { "category": "ECO A30", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Napolitano Gambit", "moves": [ "c4", "c5", "Nf3", "Nf6", "b4" ] }, { "category": "ECO A30", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Hedgehog Defense", "moves": [ "Nf3", "Nf6", "c4", "c5", "Nc3", "e6", "g3", "b6", "Bg2", "Bb7", "O-O", "Be7" ] }, { "category": "ECO A30", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical, Hedgehog, Flexible Formation", "moves": [ "Nf3", "c5", "c4", "Nf6", "Nc3", "e6", "g3", "b6", "Bg2", "Bb7", "O-O", "Be7", "d4", "cxd4", "Qxd4", "d6", "Rd1", "a6", "b3", "Nbd7" ] }, { "category": "ECO A31", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Anti-Benoni Variation", "moves": [ "d4", "Nf6", "c4", "c5", "Nf3" ] }, { "category": "ECO A32", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense", "moves": [ "d4", "Nf6", "c4", "c5", "Nf3", "cxd4", "Nxd4", "e6" ] }, { "category": "ECO A33", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense", "moves": [ "Nf3", "Nf6", "c4", "c5", "Nc3", "Nc6", "d4", "cxd4", "Nxd4", "e6" ] }, { "category": "ECO A33", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Anti-Benoni Variation, Geller Variation", "moves": [ "Nf3", "Nf6", "c4", "c5", "Nc3", "Nc6", "d4", "cxd4", "Nxd4", "e6", "g3", "Qb6" ] }, { "category": "ECO A34", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Normal Variation", "moves": [ "c4", "c5", "Nc3" ] }, { "category": "ECO A34", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Fianchetto Variation", "moves": [ "c4", "Nf6", "Nc3", "c5", "g3" ] }, { "category": "ECO A34", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Three Knights Variation", "moves": [ "Nf3", "Nf6", "c4", "c5", "Nc3", "d5", "cxd5", "Nxd5" ] }, { "category": "ECO A34", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Rubinstein Variation", "moves": [ "c4", "Nf6", "Nc3", "c5", "g3", "d5", "cxd5", "Nxd5", "Bg2", "Nc7" ] }, { "category": "ECO A35", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Two Knights Variation", "moves": [ "c4", "c5", "Nc3", "Nc6" ] }, { "category": "ECO A35", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Four Knights Variation", "moves": [ "Nf3", "Nf6", "c4", "c5", "Nc3", "Nc6" ] }, { "category": "ECO A36", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Fianchetto Variation", "moves": [ "c4", "c5", "Nc3", "Nc6", "g3" ] }, { "category": "ECO A36", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Symmetrical Variation", "moves": [ "c4", "c5", "g3", "g6", "Bg2", "Bg7", "Nc3", "Nc6" ] }, { "category": "ECO A36", "type": "Variation", "name_opening": "English Opening", "variantion_name": "Symmetrical Variation, Botvinnik System", "moves": [ 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"name_opening": "Indian Game", "variantion_name": "Pawn Push Variation", "moves": [ "d4", "Nf6", "d5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Omega Gambit", "moves": [ "d4", "Nf6", "e4" ] }, { "category": "ECO A45", "type": "Opening", "name_opening": "Paleface Attack", "moves": [ "d4", "Nf6", "f3" ] }, { "category": "ECO A45", "type": "Opening", "name_opening": "Canard Opening", "moves": [ "d4", "Nf6", "f4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Tartakower Attack", "moves": [ "d4", "Nf6", "g3" ] }, { "category": "ECO A45", "type": "Opening", "name_opening": "Bronstein Gambit", "moves": [ "d4", "Nf6", "g4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Reversed Chigorin Defense", "moves": [ "d4", "Nf6", "Nc3", "c5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Chigorin Variation", "moves": [ "d4", "Nf6", "Nc3", "d5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Maddigan Gambit", "moves": [ "d4", "Nf6", "Nc3", "e5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Lazard Gambit", "moves": [ "d4", "Nf6", "Nd2", "e5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Classical Defense", "moves": [ "d4", "Nf6", "Bg5", "e6" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Gibbins-Wiedenhagen Gambit, Oshima Defense", "moves": [ "d4", "Nf6", "g4", "e5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Gibbins-Wiedenhagen Gambit Accepted", "moves": [ "d4", "Nf6", "g4", "Nxg4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Amazon Attack", "variantion_name": "Siberian Attack", "moves": [ "d4", "Nf6", "Nc3", "d5", "Qd3" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Classical Defense, Big Center Variation", "moves": [ "d4", "Nf6", "Bg5", "e6", "e4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Edge Variation", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "Bh4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Raptor Variation", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "h4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Queen's Pawn Opening", "variantion_name": "Veresov, Richter Attack", "moves": [ "d4", "Nf6", "f3", "d5", "Nc3" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Paleface Attack, Blackmar-Diemer Gambit Deferred", "moves": [ "d4", "Nf6", "f3", "d5", "e4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Gedult Attack, Gedult Attack", "moves": [ "d4", "Nf6", "f3", "d5", "g4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Borg Variation", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "Bf4", "g5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Poisoned Pawn Variation", "moves": [ "d4", "Nf6", "Bg5", "c5", "d5", "Qb6", "Nc3" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Omega Gambit, Arafat Gambit", "moves": [ "d4", "Nf6", "e4", "Nxe4", "Bd3", "Nf6", "Bg5" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Gibbins-Wiedenhagen Gambit, Maltese Falcon", "moves": [ "d4", "Nf6", "g4", "Nxg4", "f3", "Nf6", "e4" ] }, { "category": "ECO A45", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, Weinsbach Declination", "moves": [ "d4", "Nf6", "Nc3", "d5", "f3", "e6", "e4", "dxe4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Raptor Variation, Hergert Gambit", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "h4", "Nxg5", "hxg5", "e5" ] }, { "category": "ECO A45", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, O'Kelly Defense", "moves": [ "d4", "Nf6", "f3", "d5", "e4", "dxe4", "Nc3", "c6" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Gibbins-Wiedenhagen Gambit, Stummer Gambit", "moves": [ "d4", "Nf6", "g4", "Nxg4", "e4", "d6", "Be2", "Nf6", "Nc3" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Edge Variation, Hergert Gambit", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "Bh4", "d5", "f3", "Nf6", "Nc3", "Bf5", "e4" ] }, { "category": "ECO A45", "type": "Variation", "name_opening": "Trompowsky Attack", "variantion_name": "Edge Variation, Hergert Gambit", "moves": [ "d4", "Nf6", "Bg5", "Ne4", "Bh4", "c6", "Nd2", "Qa5", "c3", "Nxd2", "Qxd2", "d5", "e4" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Knights Variation", "moves": [ "d4", "Nf6", "Nf3" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Knights Variation, Alburt-Miles Variation", "moves": [ "d4", "Nf6", "Nf3", "a6" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Polish Variation", "moves": [ "d4", "Nf6", "Nf3", "b5" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Spielmann-Indian", "moves": [ "d4", "Nf6", "Nf3", "c5" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Czech-Indian", "moves": [ "d4", "Nf6", "Nf3", "c6" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Wade-Tartakower Defense", "moves": [ "d4", "Nf6", "Nf3", "d6" ] }, { "category": "ECO A46", "type": "Opening", "name_opening": "D�ry Defense", "moves": [ "d4", "Nf6", "Nf3", "Ne4" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "London System", "moves": [ "d4", "Nf6", "Nf3", "e6", "Bf4" ] }, { "category": "ECO A46", "type": "Opening", "name_opening": "Torre Attack", "moves": [ "d4", "Nf6", "Nf3", "e6", "Bg5" ] }, { "category": "ECO A46", "type": "Opening", "name_opening": "Yusupov-Rubinstein System", "moves": [ "d4", "Nf6", "Nf3", "e6", "e3" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Old Indian", "variantion_name": "Czech Variation", "moves": [ "d4", "Nf6", "Nf3", "c6", "c4", "d6" ] }, { "category": "ECO A46", "type": "Variation", "name_opening": "Old Indian Defense", "variantion_name": "Tartakower-Indian", "moves": 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"Opening", "name_opening": "Torre Attack", "moves": [ "d4", "Nf6", "Nf3", "g6", "Bg5" ] }, { "category": "ECO A48", "type": "Variation", "name_opening": "Torre Attack", "variantion_name": "Fianchetto Defense, Euwe Variation", "moves": [ "d4", "Nf6", "Nf3", "g6", "Bg5", "Bg7", "Nbd2", "c5" ] }, { "category": "ECO A48", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Torre Attack, Gr�nfeld Variation, Main Line", "moves": [ "d4", "Nf6", "Nf3", "g6", "Bg5", "Bg7", "Nbd2", "d5", "e3", "O-O" ] }, { "category": "ECO A48", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Barry Attack, Gr�nfeld Variation", "moves": [ "d4", "Nf6", "Nf3", "g6", "Nc3", "d5", "Bf4", "Bg7", "e3", "O-O", "Be2" ] }, { "category": "ECO A49", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Przepiorka Variation", "moves": [ "d4", "Nf6", "Nf3", "g6", "g3" ] }, { "category": "ECO A49", "type": "Variation", "name_opening": "King's Indian 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{ "category": "ECO A50", "type": "Variation", "name_opening": "Mexican Defense", "variantion_name": "Horsefly Gambit", "moves": [ "d4", "Nf6", "c4", "Nc6", "d5", "Ne5", "f4" ] }, { "category": "ECO A51", "type": "Variation", "name_opening": "Indian Game", "variantion_name": "Budapest Defense", "moves": [ "d4", "Nf6", "c4", "e5" ] }, { "category": "ECO A51", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Fajarowicz Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ne4" ] }, { "category": "ECO A51", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Fajarowicz-Steiner Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ne4", "Qc2" ] }, { "category": "ECO A51", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Fajarowicz Defense, Bonsdorf Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ne4", "a3", "b6" ] }, { "category": "ECO A52", "type": "Opening", "name_opening": "Budapest Defense", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ng4" ] }, { "category": "ECO A52", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Rubinstein Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ng4", "Bf4" ] }, { "category": "ECO A52", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Alekhine Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ng4", "e4" ] }, { "category": "ECO A52", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Adler Variation", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ng4", "Nf3" ] }, { "category": "ECO A52", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Alekhine Variation, Tartakower Defense", "moves": [ "d4", "Nf6", "c4", "e5", "dxe5", "Ng4", "e4", "d6" ] }, { "category": "ECO A52", "type": "Variation", "name_opening": "Budapest Defense", "variantion_name": "Alekhine Variation, Abonyi Variation", "moves": [ "d4", "Nf6", "c4", "e5", 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"Lion Defense", "variantion_name": "Bayonet Attack", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "Nbd7", "g4" ] }, { "category": "ECO B07", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Byrne Variation", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Bg5" ] }, { "category": "ECO B07", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Kholmov System", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Bc4" ] }, { "category": "ECO B07", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Be2" ] }, { "category": "ECO B07", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Sveshnikov System", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "g3" ] }, { "category": "ECO B07", "type": "Variation", "name_opening": "Modern Defense", "variantion_name": "Geller's System", "moves": [ "e4", "g6", "d4", "Bg7", "Nf3", "d6", "c3" ] }, { 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"Nc3", "g6", "Nf3", "Bg7" ] }, { "category": "ECO B08", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation, Quiet System", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Nf3", "Bg7", "Be2" ] }, { "category": "ECO B08", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation, Schlechter Variation", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Nf3", "Bg7", "h3" ] }, { "category": "ECO B08", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation, Quiet System, Chigorin Line", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Nf3", "Bg7", "Be2", "O-O", "O-O", "Nc6" ] }, { "category": "ECO B08", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation, Quiet System, Czech Defense", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Nf3", "Bg7", "Be2", "O-O", "O-O", "c6" ] }, { "category": "ECO B08", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Classical Variation, Quiet System, Parma Defense", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "Nf3", "Bg7", "Be2", "O-O", "O-O", "Bg4" ] }, { "category": "ECO B09", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Austrian Attack", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "f4" ] }, { "category": "ECO B09", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Austrian Attack, Ljubojevic Variation", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "f4", "Bg7", "Bc4" ] }, { "category": "ECO B09", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Austrian Attack, Dragon Formation", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "f4", "Bg7", "Nf3", "c5" ] }, { "category": "ECO B09", "type": "Variation", "name_opening": "Pirc Defense", "variantion_name": "Austrian Attack", "moves": [ "e4", "d6", "d4", "Nf6", "Nc3", "g6", "f4", "Bg7", "Nf3", "O-O" ] }, { 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"d3", "d5", "Nd2", "g6", "Ngf3", "Bg7", "g3", "e5", "Bg2", "Ne7", "O-O", "O-O", "b4" ] }, { "category": "ECO B11", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Two Knights Attack, Mindeno Variation", "moves": [ "e4", "c6", "Nc3", "d5", "Nf3", "Bg4" ] }, { "category": "ECO B11", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Two Knights Attack, Mindeno Variation, Exchange Line", "moves": [ "e4", "c6", "Nc3", "d5", "Nf3", "Bg4", "h3", "Bxf3" ] }, { "category": "ECO B11", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Two Knights Attack, Mindeno Variation, Retreat Line", "moves": [ "e4", "c6", "Nc3", "d5", "Nf3", "Bg4", "h3", "Bh5" ] }, { "category": "ECO B12", "type": "Opening", "name_opening": "Caro-Kann Defense", "moves": [ "e4", "c6", "d4" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "De Bruycker Defense", "moves": [ "e4", "c6", "d4", "Na6" ] }, { "category": "ECO B12", "type": "Opening", "name_opening": "Caro-Kann Defense", "moves": [ "e4", "c6", "d4", "d5" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Massachusetts Defense", "moves": [ "e4", "c6", "d4", "f5" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Masi Variation", "moves": [ "e4", "c6", "d4", "Nf6" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Modern Variation", "moves": [ "e4", "c6", "d4", "d5", "Nd2" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Mieses Gambit", "moves": [ "e4", "c6", "d4", "d5", "Be3" ] }, { "category": "ECO B12", "type": "Variation", "name_opening": "Caro-Kann Defense", "variantion_name": "Advance Variation", "moves": [ "e4", "c6", "d4", "d5", "e5" ] }, { "category": "ECO B12", "type": 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"e4", "e5", "Ke2" ] }, { "category": "ECO C20", "type": "Opening", "name_opening": "Portuguese Opening", "moves": [ "e4", "e5", "Bb5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Tortoise Opening", "moves": [ "e4", "e5", "Bd3" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "King's Head Opening", "moves": [ "e4", "e5", "f3" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Alapin Opening", "moves": [ "e4", "e5", "Ne2" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Macleod Attack, Lasa Gambit", "moves": [ "e4", "e5", "c3", "f5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Bavarian Gambit", "moves": [ "e4", "e5", "c4", "d5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Wayward Queen Attack, Kiddie Countergambit", "moves": [ "e4", "e5", "Qh5", "Nf6" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Clam Variation, King's Gambit Reversed", "moves": [ "e4", "e5", "d3", "f5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Beyer Gambit", "moves": [ "e4", "e5", "d4", "d5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Opening", "variantion_name": "Speers", "moves": [ "e4", "e5", "Qg4", "Nf6", "Qf5" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "Portuguese Opening", "variantion_name": "Miguel Gambit", "moves": [ "e4", "e5", "Bb5", "Bc5", "b4" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "Portuguese Opening", "variantion_name": "Portuguese Gambit", "moves": [ "e4", "e5", "Bb5", "Nf6", "d4" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "King's Head Opening", "moves": [ "e4", "e5", "f3", "Nf6", "Nc3" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "Barnes Opening", "variantion_name": "Walkerling", "moves": [ "f3", "e5", "e4", "Nf6", "Bc4" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Macleod Attack, Norwalde Gambit", "moves": [ "e4", "e5", "c3", "d5", "Qh5", "Bd6" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Philidor Gambit", "moves": [ "e4", "e5", "d4", "d6", "dxe5", "Bd7" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Weber Gambit", "moves": [ "e4", "e5", "d3", "d5", "exd5", "c6", "dxc6", "Nxc6" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Opening", "variantion_name": "Van Hooydoon Gambit", "moves": [ "e4", "e5", "Qe2", "Nc6", "c3", "Nf6", "Nf3", "Bc5", "d4", "exd4", "cxd4", "Nxd4" ] }, { "category": "ECO C20", "type": "Variation", "name_opening": "King's Pawn Game", "variantion_name": "Wayward Queen Attack, Mellon Gambit", "moves": [ "e4", "e5", "Qh5", "Nc6", "Bc4", "Nh6", "d3", "g6", "Qf3", "f6", "Ne2", "d5" ] }, { "category": "ECO C21", "type": "Opening", "name_opening": "Center Game Accepted", "moves": [ "e4", "e5", "d4", "exd4" ] }, { "category": "ECO C21", "type": "Opening", "name_opening": "Danish Gambit", "moves": [ "e4", "e5", "d4", "exd4", "c3" ] }, { "category": "ECO C21", "type": "Opening", "name_opening": "Center Game", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "von der Lasa Gambit", "moves": [ "e4", "e5", "d4", "exd4", "Bc4" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Ross Gambit", "moves": [ "e4", "e5", "d4", "exd4", "Bd3" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Halasz-McDonnell Gambit", "moves": [ "e4", "e5", "d4", "exd4", "f4" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Kieseritzky Variation", "moves": [ "e4", "e5", "d4", "exd4", "Nf3" ] }, { "category": "ECO C21", "type": "Opening", "name_opening": "Danish Gambit Declined, Sorensen Defense", "moves": [ "e4", "e5", "d4", "exd4", "c3", "d5" ] }, { "category": "ECO C21", "type": "Opening", "name_opening": "Danish Gambit Accepted, Svenonius Defense", "moves": [ "e4", "e5", "d4", "exd4", "c3", "Ne7" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Kieseritzky Variation", "moves": [ "e4", "e5", "d4", "exd4", "Nf3", "c5" ] }, { "category": "ECO C21", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Kieseritzky Variation", "moves": [ "e4", "e5", "d4", "exd4", 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"variantion_name": "Hall Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qc4" ] }, { "category": "ECO C22", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Paulsen Attack Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qe3" ] }, { "category": "ECO C22", "type": "Variation", "name_opening": "Center Game", "variantion_name": "l'Hermet Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qe3", "f5" ] }, { "category": "ECO C22", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Berger Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qe3", "Nf6" ] }, { "category": "ECO C22", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Charousek Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qe3", "Bb4+", "c3", "Be7" ] }, { "category": "ECO C22", "type": "Variation", "name_opening": "Center Game", "variantion_name": "Kupr Variation", "moves": [ "e4", "e5", "d4", "exd4", "Qxd4", "Nc6", "Qe3", "Nf6", "Nc3", "Bb4", "Bd2", "O-O", "O-O-O", "Re8", "Bc4", "d6", "Nh3" ] }, { "category": "ECO C23", "type": "Opening", "name_opening": "Bishop's Opening", "moves": [ "e4", "e5", "Bc4" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Philidor Counterattack", "moves": [ "e4", "e5", "Bc4", "c6" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Khan Gambit", "moves": [ "e4", "e5", "Bc4", "d5" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Calabrese Countergambit", "moves": [ "e4", "e5", "Bc4", "f5" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Boi Variation", "moves": [ "e4", "e5", "Bc4", "Bc5" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Calabrese 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"Nf6", "d4", "exd4", "e5", "d5", "exf6", "dxc4", "Qh5", "O-O" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Lisitsyn Variation", "moves": [ "e4", "e5", "Bc4", "c6", "d4", "d5", "exd5", "cxd5", "Bb5+", "Bd7", "Bxd7+", "Nxd7", "dxe5", "Nxe5", "Ne2" ] }, { "category": "ECO C23", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Four Pawns Gambit", "moves": [ "e4", "e5", "Bc4", "Bc5", "b4", "Bxb4", "f4", "exf4", "Nf3", "Be7", "d4", "Bh4+", "g3", "fxg3", "O-O", "gxh2+", "Kh1" ] }, { "category": "ECO C24", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Berlin Defense", "moves": [ "e4", "e5", "Bc4", "Nf6" ] }, { "category": "ECO C24", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Ponziani Gambit", "moves": [ "e4", "e5", "Bc4", "Nf6", "d4" ] }, { "category": "ECO C24", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": 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C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Paulsen Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "g3" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Omaha Gambit", "moves": [ "e4", "e5", "Nc3", "d6", "f4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Zhuravlev Countergambit", "moves": [ "e4", "e5", "Nc3", "Bb4", "Qg4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Hamppe-Meitner Variation", "moves": [ "e4", "e5", "Nc3", "Bc5", "Na4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Giraffe Attack", "moves": [ "e4", "e5", "Nc3", "Bc5", "Qg4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Philidor Countergambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "d4", "f5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Zhuravlev Countergambit", "moves": [ "e4", "e5", "Nc3", "Bb4", "Qg4", "Nf6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, Knight Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Cunningham Defense", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "Be7" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Quelle Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "Bc5", "fxe5", "d6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Meitner-Mieses Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "Bc4", "Bc5", "Qg4", "Qf6", "Nd5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, Main Line", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4", "Qh4+", "Ke2" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Pierce Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "d4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, Fraser-Minckwitz Defense", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4", "Qh4+", "Ke2", "b6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, Zukertort Defense", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4", "Qh4+", "Ke2", "d5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, Paulsen Defense", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4", "Qh4+", "Ke2", "d6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Gambit, S�rensen Defense", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "d4", "Qh4+", "Ke2", "g5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Paulsen Variation, Mariotti Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "g3", "Bc5", "Bg2", "h5", "Nf3", "h4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Paulsen Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "g3", "Nf6", "Bg2", "Bc5", "Nge2", "d5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Hamppe-Muzio Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "Bc4", "g4", "O-O" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Hamppe-Allgaier Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "h4", "g4", "Ng5" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Hamppe-Muzio Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "Bc4", "g4", "O-O", "gxf3" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Hamppe-Allgaier Gambit, Alapin Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "h4", "g4", "Ng5", "d6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Hamppe-Allgaier-Thorold Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "Nc6", "Nc3", "g5", "h4", "g4", "Ng5", "h6", "Nxf7", "Kxf7", "d4" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Hamppe-Muzio, Dubois Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "Bc4", "g4", "O-O", "gxf3", "Qxf3", "Ne5", "Qxf4", "Qf6" ] }, { "category": "ECO C25", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Pierce Gambit, Rushmere Attack", "moves": [ "e4", "e5", "Nc3", "Nc6", "f4", "exf4", "Nf3", "g5", "d4", "g4", "Bc4", "gxf3", "O-O", "d5", "exd5", "Bg4", "dxc6" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Falkbeer Variation", "moves": [ "e4", "e5", "Nc3", "Nf6" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Mengarini Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "a3" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Mieses Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "g3" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Reversed Spanish", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Bb4" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Horwitz Gambit", "moves": [ "e4", "e5", "Bc4", "Nf6", "Nc3", "b5" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Vienna Hybrid, Spielmann Attack", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Bc5", "d3" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Eifel Gambit", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Bc5", "Nge2", "b5" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Mieses Variation, Erben Gambit", "moves": [ "e4", "e5", "Nc3", "Nf6", "g3", "d5", "exd5", "c6" ] }, { "category": "ECO C26", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Paulsen Variation, Pollock Gambit", "moves": [ "e4", "e5", "Nc3", "Nf6", "g3", "Bc5", "Bg2", "Nc6", "Nge2", "d5", "exd5" ] }, { "category": "ECO C27", "type": "Opening", "name_opening": "Vienna Game", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Nxe4" ] }, { "category": "ECO C27", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Boden-Kieseritzky Gambit", "moves": [ "e4", "e5", "Nf3", "Nf6", "Bc4", "Nxe4", "Nc3" ] }, { "category": "ECO C27", "type": "Opening", "name_opening": "Boden-Kieseritzky Gambit, Lichtenhein Defense", "moves": [ "e4", "e5", "Nf3", "Nf6", "Bc4", "Nxe4", "Nc3", "d5" ] }, { "category": "ECO C27", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Monster Declined", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Nxe4", "Qh5", "Nd6", "Bb3", "Be7" ] }, { "category": "ECO C27", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Adams' Gambit", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Nxe4", "Qh5", "Nd6", "Bb3", "Nc6", "d4" ] }, { "category": "ECO C27", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Alekhine Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Nxe4", "Qh5", "Nd6", "Bb3", "Be7", "Nf3", "Nc6", "Nxe5" ] }, { "category": "ECO C27", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Frankenstein-Dracula Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "Bc4", "Nxe4", "Qh5", "Nd6", "Bb3", "Nc6", "Nb5", "g6", "Qf3", "f5", "Qd5", "Qe7", "Nxc7+", "Kd8", "Nxa8", "b6" ] }, { "category": "ECO C28", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Three Knights Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "Bc4", "Nf6" ] }, { "category": "ECO C28", "type": "Variation", "name_opening": "Bishop's Opening", "variantion_name": "Vienna Hybrid, Hrom�dka Variation", "moves": [ "e4", "e5", "Nc3", "Nc6", "Bc4", "Nf6", "d3", "Bb4", "Ne2" ] }, { "category": "ECO C28", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Stanley Variation, Bronstein Gambit", "moves": [ "e4", "e5", "Nc3", "Nc6", "Bc4", "Nf6", "f4", "Nxe4", "Nf3" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Main Line", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Steinitz Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "d3" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Paulsen Attack", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "Qf3" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Modern Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "d3" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Bardeleben Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "Qf3", "f5" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Breyer Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "Nf3", "Be7" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Heyde Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "Qf3", "f5", "d4" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Kaufmann Variation", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "Nf3", "Bg4", "Qe2" ] }, { "category": "ECO C29", "type": "Variation", "name_opening": "Vienna Game", "variantion_name": "Vienna Gambit, Wurzburger Trap", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "fxe5", "Nxe4", "d3", "Qh4+", "g3", "Nxg3", "Nf3", "Qh5", "Nxd5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit", "moves": [ "e4", "e5", "f4" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Mafia Defense", "moves": [ "e4", "c5", "f4", "e5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Queen's Knight Defense", "moves": [ "e4", "e5", "f4", "Nc6" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Norwalde Variation", "moves": [ "e4", "e5", "f4", "Qf6" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Keene's Defense", "moves": [ "e4", "e5", "f4", "Qh4+" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Panteldakis Countergambit", "moves": [ "e4", "e5", "f4", "f5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Classical Variation", "moves": [ "e4", "e5", "f4", "Bc5" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Zilbermints Double Countergambit", "moves": [ "e4", "e5", "f4", "g5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Petrov's Defense", "moves": [ "e4", "e5", "f4", "Nf6" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Keene's Defense", "moves": [ "e4", "e5", "f4", "Qh4+", "g3" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Miles Defense", "moves": [ "e4", "e5", "f4", "Nc6", "Nf3", "f5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Zilbermints Double Gambit", "moves": [ "e4", "e5", "f4", "Nc6", "Nf3", "g5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Keene Defense", "moves": [ "e4", "e5", "f4", "Qh4+", "g3", "Qe7" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Panteldakis Countergambit, Greco Variation", "moves": [ "e4", "e5", "f4", "f5", "exf5", "Qh4+" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Panteldakis Countergambit, Schiller's Defense", "moves": [ "e4", "e5", "f4", "f5", "exf5", "Bc5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Soller-Zilbermints Gambit", "moves": [ "e4", "e5", "f4", "f6", "fxe5", "Nc6" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Senechaud Countergambit", "moves": [ "e4", "e5", "f4", "Bc5", "Nf3", "g5" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Norwalde Variation, Schubert Variation", "moves": [ "e4", "e5", "f4", "Qf6", "Nc3", "Qxf4", "d4" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Classical Variation, Rotlewi Countergambit", "moves": [ "e4", "e5", "f4", "Bc5", "Nf3", "d6", "b4" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Classical Variation", "moves": [ "e4", 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"f4", "Bc5", "Nf3", "d6", "c3", "f5" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Norwalde Variation, B�cker Gambit", "moves": [ "e4", "e5", "f4", "Qf6", "Nc3", "Qxf4", "Nf3", "Bb4", "Bc4" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Panteldakis Countergambit, Pawn Sacrifice Line", "moves": [ "e4", "e5", "f4", "f5", "exf5", "exf4", "Qh5+", "g6", "fxg6", "Qe7+", "Kd1" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit", "variantion_name": "Panteldakis Countergambit, Symmetrical Variation", "moves": [ "e4", "e5", "f4", "f5", "exf5", "exf4", "Nf3", "d5", "d4", "Bd6", "Bd3" ] }, { "category": "ECO C30", "type": "Opening", "name_opening": "King's Gambit Declined, Classical Variation, Euwe Attack", "moves": [ "e4", "e5", "f4", "Bc5", "Nf3", "d6", "c3", "Bg4", "fxe5", "dxe5", "Qa4+" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Classical, R�ti Variation", "moves": [ "e4", "e5", "f4", "Bc5", "Nf3", "d6", "c3", "f5", "fxe5", "dxe5", "d4", "exd4", "Bc4" ] }, { "category": "ECO C30", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Classical, Svenonius Variation", "moves": [ "e4", "e5", "Bc4", "Nc6", "Nc3", "Nf6", "d3", "Bc5", "f4", "d6", "Nf3", "Bg4", "h3", "Bxf3", "Qxf3", "exf4" ] }, { "category": "ECO C31", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer Countergambit", "moves": [ "e4", "e5", "f4", "d5" ] }, { "category": "ECO C31", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Milner-Barry Variation", "moves": [ "e4", "e5", "f4", "d5", "Nc3" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Hinrichsen Gambit", "moves": [ "e4", "e5", "f4", "d5", "d4" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit Accepted", "moves": [ "e4", "e5", "f4", "d5", "exd5" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Blackburne Attack", "moves": [ "e4", "e5", "f4", "d5", "Nf3" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Nimzowitsch-Marshall Countergambit", "moves": [ "e4", "e5", "f4", "d5", "exd5", "c6" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Staunton Line", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Modern Transfer", "moves": [ "e4", "e5", "f4", "d5", "exd5", "exf4" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Miles Gambit", "moves": [ "e4", "e5", "f4", "d5", "exd5", "Bc5" ] }, { "category": "ECO C31", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Gr�nfeld Defense, Steiner Gambit", "moves": [ "e4", "e5", "f4", "d5", "Nc3", "dxe4", "Nxe4" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Anderssen Attack", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "Bb5+" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Pickler Gambit", "moves": [ "e4", "e5", "f4", "d5", "exd5", "c6", "dxc6", "Bc5" ] }, { "category": "ECO C31", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Rubinstein Variation", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "Nc3", "Nf6", "Qe2" ] }, { "category": "ECO C31", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit, Morphy Defense", "moves": [ "e4", "e5", "Nc3", "Nf6", "f4", "d5", "exd5", "e4", "d3", "Bb4", "Bd2", "e3" ] }, { "category": "ECO C32", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit, Keres Variation", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "Nd2" ] }, { "category": "ECO C32", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit, Old Line", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "Qe2" ] }, { "category": "ECO C32", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit Accepted", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4" ] }, { "category": "ECO C32", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Charousek Gambit", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4", "Nxe4", "Qe2" ] }, { "category": "ECO C32", "type": "Opening", "name_opening": "King's Gambit, Falkbeer Countergambit, Charousek Gambit, Main Line", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4", "Nxe4", "Nf3", "Bc5", "Qe2", "Bf5" ] }, { "category": "ECO C32", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Charousek Variation", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4", "Nxe4", "Qe2", "Qxd5", "Nd2", "f5", "g4" ] }, { "category": "ECO C32", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Tarrasch Variation", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4", "Nxe4", "Nf3", "Bc5", "Qe2", "Bf5", "g4", "O-O" ] }, { "category": "ECO C32", "type": "Variation", "name_opening": "King's Gambit Declined", "variantion_name": "Falkbeer, Alapin Variation", "moves": [ "e4", "e5", "f4", "d5", "exd5", "e4", "d3", "Nf6", "dxe4", "Nxe4", "Nf3", "Bc5", "Qe2", "Bf2+", "Kd1", "Qxd5+", "Nfd2" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted", "moves": [ "e4", "e5", "f4", "exf4" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "Van Geet Opening", "variantion_name": "Nowokunski Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Nc3" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Orsini Gambit", "moves": [ "e4", "e5", "f4", "exf4", "b3" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Basman Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Qe2" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Breyer Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Qf3" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Dodo Variation", "moves": [ "e4", "e5", "f4", "exf4", "Qg4" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Carrera Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Qh5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Polerio Gambit", "moves": [ "e4", "e5", "f4", "exf4", "d4" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Tumbleweed", "moves": [ "e4", "e5", "f4", "exf4", "Kf2" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Schurig Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Bb5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Bc4" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Schurig Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Bd3" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Tartakower Gambit", "moves": 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"category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Lopez Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "c6" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Bledow Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "d5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Gianutio Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "f5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Anderssen Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "g5" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Steinitz Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Ne7" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Cozio Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Nf6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Bogoljubov Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Nf6", "Nc3" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Anderssen Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "d5", "Bxd5", "c6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Bledow Countergambit", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "d5", "Bxd5", "Nf6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Bryan Countergambit", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "b5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Boden Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "Nc6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Cozio Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "d6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Greco Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "Bc5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Lopez Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, First Jaenisch Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "Nf6" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted, Bishop's Gambit (see", "variantion_name": "Jaenisch Variation)", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "Qf6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, Bogoljubov Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Nf6", "Nc3", "c6" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Tartakower Gambit, Weiss Defense", "moves": [ "e4", "e5", "f4", "exf4", "Be2", "f5", "exf5", "d6" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Classical Defense, Cozio Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5", "Qf3" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Paulsen Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Nf6", "Nc3", "Bb4", "e5" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Boren-Svenonius Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "d5", "Bxd5", "Qh4+", "Kf1", "Bd6" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Chigorin's Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "d5", "Bxd5", "g5", "g3" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, McDonnell Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5", "Nc3", "Bg7", "g3" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Classical Defense", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "Ne7", "Nc3", "g5", "d4", "Bg7" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Lopez-Gianutio Countergambit, Hein Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "f5", "Qe2", "Qh4+", "Kd1", "fxe4", "Nc3", "Kd8" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Grimm Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5", "Nc3", "Bg7", "d4", "d6", "e5" ] }, { "category": "ECO C33", "type": "Opening", "name_opening": "King's Gambit Accepted, Bishop's Gambit, McDonnell Attack", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5", "Nc3", "Bg7", "d4", "Ne7", "g3" ] }, { "category": "ECO C33", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "Bishop's Gambit, Fraser Variation", "moves": [ "e4", "e5", "f4", "exf4", "Bc4", "Qh4+", "Kf1", "g5", "Nc3", "Bg7", "g3", "fxg3", "Qf3" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, King's Knight Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Nf3" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, MacLeod Defense", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "Nc6" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, Fischer Defense", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "d6" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, Gianutio Countergambit", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "f5" ] }, { "category": "ECO C34", "type": "Variation", "name_opening": "King's Gambit Accepted", "variantion_name": "King Knight's Gambit", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "g5" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, Bonsch-Osmolovsky Variation", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "Ne7" ] }, { "category": "ECO C34", "type": "Opening", "name_opening": "King's Gambit Accepted, Schallopp Defense", "moves": [ "e4", "e5", "f4", "exf4", "Nf3", "Nf6" ] }, { "category": "ECO C34", 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"e4", "d5", "d4", "dxe4", "Nc3", "e5", "Qh5" ] }, { "category": "ECO D00", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, Lamb Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "Nc6" ] }, { "category": "ECO D00", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, Elbert Countergambit", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "e5" ] }, { "category": "ECO D00", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, Brombacher Countergambit", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "c5" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Vienna Variation", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "Bf5" ] }, { "category": "ECO D00", "type": "Opening", "name_opening": "Blackmar-Diemer Gambit Declined, Langeheinecke Defense", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "e3" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Zeller Defense, Soller Attack", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Bf5", "f3", "Nf6", "Bc4" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Ryder Gambit", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Qxf3" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Ritter Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "b6" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Pietrowsky Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "Nc6" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Schlutter Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "Nbd7" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Kaulich Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "c5" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Ziegler Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "c6" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Rook Pawn Defense", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "h5" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Euwe Defense", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "exf3", "Nxf3", "e6" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Bogoljubov Variation", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "exf3", "Nxf3", "g6" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Tartakower Variation", "moves": [ "e4", "d5", "d4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "Bf5" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Teichmann Variation", "moves": [ "e4", "d5", "d4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "Bg4" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Bogoljubov Variation, Nimzowitsch Attack", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "g6", "Bc4", "Bg7", "Ne5" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Bogoljubov Defense, Mad Dog Attack", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "g6", "Bc4", "Bg7", "h4" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "von Popiel Gambit, Zilbermints Variation", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "Bg5", "Bf5", "Bxf6", "exf6", "g4", "Bg6", "Qe2", "Bb4", "Qb5+" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Bogoljubov Variation, Kloss Attack", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "g6", "Bc4", "Bg7", "O-O", "O-O", "Kh1" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Bogoljubov Variation, Studier Attack", "moves": [ "d4", "Nf6", "Nc3", "d5", "e4", "dxe4", "f3", "exf3", "Nxf3", "g6", "Bc4", "Bg7", "O-O", "O-O", "Qe1" ] }, { "category": "ECO D00", "type": "Variation", "name_opening": "Blackmar-Diemer Gambit", "variantion_name": "Euwe Defense, Zilbermints Gambit", "moves": [ "d4", "d5", "e4", "dxe4", "Nc3", "Nf6", "f3", "exf3", "Nxf3", "e6", "Bg5", "Be7", "Bd3", "Nc6", "O-O", "Nxd4", "Kh1" ] }, { "category": "ECO D01", "type": "Opening", "name_opening": "Richter-Veresov Attack", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5" ] }, { "category": "ECO D01", "type": "Opening", "name_opening": "Richter-Veresov Attack", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Bf5" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Veresov Attack, Boyce Defense", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Ne4" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Veresov Attack, Two Knights System", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Nbd7", "Nf3" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Veresov Attack, Richter Variation", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Bf5", "f3" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Veresov Attack, Veresov Variation", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Bf5", "Bxf6" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Veresov Attack, Two Knights System, Gr�nfeld Defense", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "Nbd7", "Nf3", "g6" ] }, { "category": "ECO D01", "type": "Variation", "name_opening": "Veresov Opening", "variantion_name": "Malich Gambit", "moves": [ "d4", "Nf6", "Nc3", "d5", "Bg5", "c5", "Bxf6", "gxf6", "e4", "dxe4", "d5" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Zukertort Variation", "moves": [ "d4", "d5", "Nf3" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Chigorin Variation", "moves": [ "d4", "d5", "Nf3", "Nc6" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Krause Variation", "moves": [ "d4", "d5", "Nf3", "c5" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Symmetrical Variation", "moves": [ "d4", "d5", "Nf3", "Nf6" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Anti-Torre", "moves": [ "Nf3", "d5", "d4", "Bg4" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "London System", "moves": [ "d4", "d5", "Nf3", "Nf6", "Bf4" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Symmetrical Variation, Pseudo-Catalan", "moves": [ "d4", "d5", "Nf3", "Nf6", "g3" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Gambit Accepted", "variantion_name": "Rosenthal Variation", "moves": [ "d4", "d5", "Nf3", "e6", "c4", "dxc4" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Zilbermints Countergambit", "moves": [ "d4", "d5", "Nf3", "Nf6", "c4", "b5" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Chandler Gambit", "moves": [ "d4", "d5", "Nf3", "c5", "g3", "cxd4", "Bg2" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Levitsky Attack, Euwe Variation, Modern Line", "moves": [ "d4", "d5", "Nf3", "c6", "Bg5", "h6", "Bh4", "Qb6" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense, Pseudo-Slav", "moves": [ "d4", "d5", "Nf3", "Bf5", "c4", "e6", "Nc3", "c6" ] }, { "category": "ECO D02", "type": "Variation", "name_opening": "London System", "variantion_name": "Poisoned Pawn Variation", "moves": [ "d4", "Nf6", "Nf3", "d5", "Bf4", "c5", "e3", "Qb6", "Nc3" ] }, { "category": "ECO D03", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Torre Attack", "moves": [ "d4", "d5", "Nf3", "Nf6", "Bg5" ] }, { "category": "ECO D03", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Torre Attack, Gossip Variation", "moves": [ "d4", "d5", "Nf3", "Nf6", "Bg5", "Ne4" ] }, { "category": "ECO D03", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Torre Attack, Gr�nfeld Variation", "moves": [ "d4", "d5", "Nf3", "Nf6", "Bg5", "g6" ] }, { "category": "ECO D04", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Colle System", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3" ] }, { "category": "ECO D04", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Colle System, Anti-Colle", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3", "Bf5" ] }, { "category": "ECO D04", "type": "Variation", "name_opening": "Queen's Pawn Game", "variantion_name": "Colle System, Gr�nfeld Formation", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3", "g6", "Bd3", "Bg7" ] }, { "category": "ECO D05", "type": "Opening", "name_opening": "Colle System", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3", "e6" ] }, { "category": "ECO D05", "type": "Opening", "name_opening": "Colle System", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3", "e6", "Bd3" ] }, { "category": "ECO D05", "type": "Opening", "name_opening": "Queen's Pawn Game, Zukertort Variation", "moves": [ "d4", "d5", "Nf3", "c5", "e3", "Nf6", "Nbd2", "e6", "b3" ] }, { "category": "ECO D05", "type": "Opening", "name_opening": "Rubinstein Opening", "moves": [ "d4", "Nf6", "Nf3", "e6", "e3", "c5", "Bd3", "d5", "b3" ] }, { "category": "ECO D05", "type": "Variation", "name_opening": "Colle System", "variantion_name": "Traditional Colle", "moves": [ "d4", "Nf6", "Nf3", "e6", "e3", "c5", "Bd3", "d5", "c3" ] }, { "category": "ECO D05", "type": "Variation", "name_opening": "Rubinstein Opening", "variantion_name": "Semi-Slav Defense", "moves": [ "d4", "d5", "Nf3", "Nf6", "e3", "e6", "Bd3", "Bd6", "O-O", "O-O", "b3", "Nbd7", "Bb2" ] }, { "category": "ECO D05", "type": "Variation", "name_opening": "Rubinstein Opening", "variantion_name": "Bogoljubov Defense", "moves": [ "d4", "Nf6", "Nf3", "e6", "e3", "c5", "Bd3", "d5", "b3", "Nc6", "O-O", "Bd6", "Bb2", "O-O" ] }, { "category": "ECO D05", "type": "Variation", "name_opening": "Rubinstein Opening", "variantion_name": "Classical Defense", "moves": [ "d4", "Nf6", "Nf3", "e6", "e3", "c5", "Bd3", "d5", "b3", "Nc6", "O-O", "Be7", "Bb2", "O-O" ] }, { "category": "ECO D06", "type": "Opening", "name_opening": "Queen's Gambit", "moves": [ "d4", "d5", "c4" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Zilbermints Gambit", "moves": [ "d4", "d5", "c4", "b5" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Austrian Defense", "moves": [ "d4", "d5", "c4", "c5" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense", "moves": [ "d4", "d5", "c4", "Bf5" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Marshall Defense", "moves": [ "d4", "d5", "c4", "Nf6" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense, Queen Attack", "moves": [ "d4", "d5", "c4", "Bf5", "Qb3" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Austrian Defense, Gusev Countergambit", "moves": [ "d4", "d5", "c4", "c5", "cxd5", "Nf6" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Austrian Attack, Salvio Countergambit", "moves": [ "d4", "d5", "c4", "c5", "dxc5", "d4" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Marshall Defense, Tan Gambit", "moves": [ "d4", "d5", "c4", "Nf6", "cxd5", "c6" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense, Queen Attack Deferred", "moves": [ "d4", "d5", "c4", "Bf5", "Nc3", "e6", "Qb3" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense, Pseudo-Chigorin", "moves": [ "d4", "d5", "c4", "Bf5", "Nc3", "e6", "Nf3", "Nc6" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Austrian Defense, Haberditz Variation", "moves": [ "d4", "d5", "c4", "c5", "cxd5", "Nf6", "e4", "Nxe4", "dxc5", "Qa5+" ] }, { "category": "ECO D06", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Baltic Defense, Argentinian Gambit", "moves": [ "d4", "d5", "c4", "Bf5", "cxd5", "Bxb1", "Qa4+", "c6", "dxc6", "Nxc6" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense", "moves": [ "d4", "d5", "c4", "Nc6" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense", "moves": [ "d4", "d5", "c4", "Nc6", "Nc3" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense", "moves": [ "d4", "d5", "c4", "Nc6", "Nc3", "dxc4" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Tartakower Gambit", "moves": [ "d4", "d5", "c4", "Nc6", "Nc3", "e5" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Exchange Variation", "moves": [ "d4", "d5", "c4", "Nc6", "cxd5", "Qxd5" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Main Line", "moves": [ "d4", "d5", "c4", "Nc6", "Nf3", "Bg4" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Lazard Gambit", "moves": [ "d4", "d5", "c4", "Nc6", "Nf3", "e5" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Janowski Variation", "moves": [ "d4", "d5", "c4", "Nc6", "Nc3", "dxc4", "Nf3" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Main Line, Alekhine Variation", "moves": [ "d4", "d5", "c4", "Nc6", "Nf3", "Bg4", "Qa4" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": "Queen's Gambit Refused", "variantion_name": "Chigorin Defense, Modern Gambit", "moves": [ "d4", "d5", "c4", "Nc6", "Nc3", "dxc4", "Nf3", "Nf6" ] }, { "category": "ECO D07", "type": "Variation", "name_opening": 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"Chameleon Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "a6" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Two Knights Attack", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "S�chting Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "Qb6" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Chameleon Variation, Advance System", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "a6", "c5" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Alekhine Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "e3" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Geller Gambit", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "e4" ] }, { "category": "ECO D15", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Geller Gambit", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "e4", "b5", "e5" ] }, { "category": "ECO D16", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Alapin Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4" ] }, { "category": "ECO D16", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Smyslov Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Na6" ] }, { "category": "ECO D16", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Steiner Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bg4" ] }, { "category": "ECO D16", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Soultanbeieff Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "e6" ] }, { "category": "ECO D16", "type": "Variation", "name_opening": "Queen's Gambit Declined", "variantion_name": "Slav, Smyslov Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Na6", "e4", "Bg4" ] }, { "category": "ECO D17", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Czech Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bf5" ] }, { "category": "ECO D17", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Czech Variation, Krause Attack", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bf5", "Ne5" ] }, { "category": "ECO D17", "type": "Variation", "name_opening": "Slav Defense", "variantion_name": "Czech Variation, Bled Attack", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bf5", "Nh4" ] }, { "category": "ECO D17", "type": "Variation", "name_opening": "Slav Defense", 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"name_opening": "Slav Defense", "variantion_name": "Czech Variation, Classical System, Main Line", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bf5", "e3", "e6", "Bxc4", "Bb4", "O-O", "O-O", "Qe2" ] }, { "category": "ECO D19", "type": "Variation", "name_opening": "Queen's Gambit Declined", "variantion_name": "Slav, Dutch, S�misch Variation", "moves": [ "d4", "d5", "c4", "c6", "Nf3", "Nf6", "Nc3", "dxc4", "a4", "Bf5", "e3", "e6", "Bxc4", "Bb4", "O-O", "O-O", "Qe2", "Ne4", "g4" ] }, { "category": "ECO D20", "type": "Opening", "name_opening": "Queen's Gambit Accepted", "moves": [ "d4", "d5", "c4", "dxc4" ] }, { "category": "ECO D20", "type": "Variation", "name_opening": "Queen's Gambit Accepted", "variantion_name": "Accelerated Mannheim Variation", "moves": [ "d4", "d5", "c4", "dxc4", "Qa4+" ] }, { "category": "ECO D20", "type": "Variation", "name_opening": "Queen's Gambit Accepted", "variantion_name": "Old Variation", "moves": [ "d4", "d5", "c4", "dxc4", "e3" ] 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] }, { "category": "ECO E97", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Bayonet Attack", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "b4" ] }, { "category": "ECO E97", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Korchnoi Attack", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Bd2" ] }, { "category": "ECO E97", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Modern System", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Nd2" ] }, { "category": "ECO E97", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Bayonet Attack, Yepishin's Line", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "b4", "Nh5", "Qc2" ] }, { "category": "ECO E97", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Bayonet Attack, Sokolov's Line", "moves": [ "Nf3", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "O-O", "d4", "d6", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "b4", "Nh5", "Re1" ] }, { "category": "ECO E98", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Classical System", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Ne1" ] }, { "category": "ECO E98", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Classical System, Neo-Classical Line", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Ne1", "Nd7", "Be3" ] }, { "category": "ECO E98", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Classical System, Kozul Gambit", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Ne1", "Nd7", "Be3", "f5", "f3", "f4", "Bf2", "g5", "Rc1", "Ng6", "c5" ] }, { "category": "ECO E99", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Classical System, Traditional Line", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Ne1", "Nd7", "f3", "f5" ] }, { "category": "ECO E99", "type": "Variation", "name_opening": "King's Indian Defense", "variantion_name": "Orthodox Variation, Classical System, Benko Attack", "moves": [ "d4", "Nf6", "c4", "g6", "Nc3", "Bg7", "e4", "d6", "Nf3", "O-O", "Be2", "e5", "O-O", "Nc6", "d5", "Ne7", "Ne1", "Nd7", "f3", "f5", "g4" ] } ]