rB1qk1nr/p6N/Q6b/1bpp4/1p3pP1/1PP1PP1N/P2P3P/3RK2R w K - 0 23
FEN state: rB1qk1nr/p6N/Q6b/1bpp4/1p3pP1/1PP1PP1N/P2P3P/3RK2R w K - 0 23 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, white bishop at b8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7 and white knight at h7. White queen at a6 and black bishop at h6. Black bishop at b5, black pawn at c5 and black pawn at d5. Black pawn at b4, black pawn at f4 and white pawn at g4. White pawn at b3, white pawn at c3, white pawn at e3, white pawn at f3 and white knight at h3. White pawn at a2, white pawn at d2 and white pawn at h2. White rook at d1, white king at e1 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.