{
    "event": "Game with annotations 1",
    "mainVariation": [
        "e4",
        "e5",
        "Bc4",
        "Nc6",
        {
            "notation": "Qh5",
            "comment": "Threatening checkmate", 
            "tags": { "cal": "Gc4f7,Gh5f7", "csl": "Rf7" }
        },
        {
            "notation": "g6",
            "comment": "Avoid the checkmate",
            "nags": [ 1 ],
            "tags": { "cal": "Rg6h5" },
            "variations": [
                {
                    "comment": "Other defenses are possible, for instance:",
                    "nodes": [ "Nf6" ]
                }
            ]
        },
        "Qf3"
    ]
}