1rb1kb1N/1pqp4/3Pp2p/1Np4n/p1P1p1PP/8/nPQ2P2/1RB1KB1R b K - 1 21
FEN state: 1rb1kb1N/1pqp4/3Pp2p/1Np4n/p1P1p1PP/8/nPQ2P2/1RB1KB1R b K - 1 21 ; Best move: c7a5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and white knight at h8. Black pawn at b7, black queen at c7 and black pawn at d7. White pawn at d6, black pawn at e6 and black pawn at h6. White knight at b5, black pawn at c5 and black knight at h5. Black pawn at a4, white pawn at c4, black pawn at e4, white pawn at g4 and white pawn at h4. Black knight at a2, white pawn at b2, white queen at c2 and white pawn at f2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 21. Black to move.