r1q1kNn1/3b4/pp1p1pp1/1NpP2Pp/2P1pP2/P2QP3/1B5P/3RKB1R b K - 0 24
FEN state: r1q1kNn1/3b4/pp1p1pp1/1NpP2Pp/2P1pP2/P2QP3/1B5P/3RKB1R b K - 0 24 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8, white knight at f8 and black knight at g8. Black bishop at d7. Black pawn at a6, black pawn at b6, black pawn at d6, black pawn at f6 and black pawn at g6. White knight at b5, black pawn at c5, white pawn at d5, white pawn at g5 and black pawn at h5. White pawn at c4, black pawn at e4 and white pawn at f4. White pawn at a3, white queen at d3 and white pawn at e3. White bishop at b2 and white pawn at h2. White rook at d1, 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 0. Full move number is 24. Black to move.