Event = {Custom startup position}
+---+---+---+---+---+---+---+---+
| r | n | b |   | k |   | n | r |
+---+---+---+---+---+---+---+---+
| p | p | p | p |   | p | p | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | b |   | p |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | B |   | P |   |   | q |
+---+---+---+---+---+---+---+---+
|   |   | N |   |   | N |   |   |
+---+---+---+---+---+---+---+---+
| P | P | P | P |   | P | P | P |
+---+---+---+---+---+---+---+---+
| R |   | B | Q | K |   |   | R |
+---+---+---+---+---+---+---+---+
b KQkq -
Initial move number = {4}
[start]                 -+<LONG
[4b]                    (4b) Qxf2# (#hm=0)
+---+---+---+---+---+---+---+---+
| r | n | b |   | k |   | n | r |
+---+---+---+---+---+---+---+---+
| p | p | p | p |   | p | p | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | b |   | p |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | B |   | P |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | N |   |   | N |   |   |
+---+---+---+---+---+---+---+---+
| P | P | P | P |   | q | P | P |
+---+---+---+---+---+---+---+---+
| R |   | B | Q | K |   |   | R |
+---+---+---+---+---+---+---+---+
w KQkq -
{Black wins}{1 plies}