1r1qkr2/p1p1nppp/b7/np1pp1B1/4PP1b/1PPP2PP/P2N2BR/R2QK3 b Q - 4 21
FEN state: 1r1qkr2/p1p1nppp/b7/np1pp1B1/4PP1b/1PPP2PP/P2N2BR/R2QK3 b Q - 4 21 ; Best move: h4g3
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8 and black rook at f8. Black pawn at a7, black pawn at c7, black knight at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6. Black knight at a5, black pawn at b5, black pawn at d5, black pawn at e5 and white bishop at g5. White pawn at e4, white pawn at f4 and black bishop at h4. White pawn at b3, white pawn at c3, white pawn at d3, white pawn at g3 and white pawn at h3. White pawn at a2, white knight at d2, white bishop at g2 and white rook at h2. White rook at a1, white queen at d1 and white king at e1. White queenside is the only castle move available. Half move number is 4. Full move number is 21. Black to move.