rn4nr/1pqk4/pP1pp1pp/2p2pb1/3P1B1P/2P3P1/bQN1PP2/1R2KBNR w K - 0 23
FEN state: rn4nr/1pqk4/pP1pp1pp/2p2pb1/3P1B1P/2P3P1/bQN1PP2/1R2KBNR w K - 0 23 ; Best move: b6c7
The current state of the chess board is: Black rook at a8, black knight at b8, black knight at g8 and black rook at h8. Black pawn at b7, black queen at c7 and black king at d7. Black pawn at a6, white pawn at b6, black pawn at d6, black pawn at e6, black pawn at g6 and black pawn at h6. Black pawn at c5, black pawn at f5 and black bishop at g5. White pawn at d4, white bishop at f4 and white pawn at h4. White pawn at c3 and white pawn at g3. Black bishop at a2, white queen at b2, white knight at c2, white pawn at e2 and white pawn at f2. White rook at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 23. White to move.