rnb3nb/3ppk2/5p2/pp4p1/1PP2PP1/P3Q3/1B1PP1B1/RN3K2 b - - 0 21
FEN state: rnb3nb/3ppk2/5p2/pp4p1/1PP2PP1/P3Q3/1B1PP1B1/RN3K2 b - - 0 21 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black bishop at h8. Black pawn at d7, black pawn at e7 and black king at f7. Black pawn at f6. Black pawn at a5, black pawn at b5 and black pawn at g5. White pawn at b4, white pawn at c4, white pawn at f4 and white pawn at g4. White pawn at a3 and white queen at e3. White bishop at b2, white pawn at d2, white pawn at e2 and white bishop at g2. White rook at a1, white knight at b1 and white king at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.