1nb1k3/r1Qp4/4p2p/pp1P1P1q/4P3/NP1P1P1N/2R4P/R3KBr1 b Q - 0 21
FEN state: 1nb1k3/r1Qp4/4p2p/pp1P1P1q/4P3/NP1P1P1N/2R4P/R3KBr1 b Q - 0 21 ; Best move: a7c7
The current state of the chess board is: Black knight at b8, black bishop at c8 and black king at e8. Black rook at a7, white queen at c7 and black pawn at d7. Black pawn at e6 and black pawn at h6. Black pawn at a5, black pawn at b5, white pawn at d5, white pawn at f5 and black queen at h5. White pawn at e4. White knight at a3, white pawn at b3, white pawn at d3, white pawn at f3 and white knight at h3. White rook at c2 and white pawn at h2. White rook at a1, white king at e1, white bishop at f1 and black rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.