r1q1k2r/nb2p2p/pp3npB/1Npp2N1/2R3p1/2b5/P1Q1PP1P/R2K1B2 w kq - 0 23
FEN state: r1q1k2r/nb2p2p/pp3npB/1Npp2N1/2R3p1/2b5/P1Q1PP1P/R2K1B2 w kq - 0 23 ; Best move: b5a7
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8 and black rook at h8. Black knight at a7, black bishop at b7, black pawn at e7 and black pawn at h7. Black pawn at a6, black pawn at b6, black knight at f6, black pawn at g6 and white bishop at h6. White knight at b5, black pawn at c5, black pawn at d5 and white knight at g5. White rook at c4 and black pawn at g4. Black bishop at c3. White pawn at a2, white queen at c2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white king at d1 and white bishop at f1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 23. White to move.