rn1qkbnr/B1p4p/8/p5p1/1p1p1N1P/1PPP1P1b/P3P3/RN1QKB1R w Q - 0 23
FEN state: rn1qkbnr/B1p4p/8/p5p1/1p1p1N1P/1PPP1P1b/P3P3/RN1QKB1R w Q - 0 23 ; Best move: a7d4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. White bishop at a7, black pawn at c7 and black pawn at h7. Black pawn at a5 and black pawn at g5. Black pawn at b4, black pawn at d4, white knight at f4 and white pawn at h4. White pawn at b3, white pawn at c3, white pawn at d3, white pawn at f3 and black bishop at h3. White pawn at a2 and white pawn at e2. White rook at a1, white knight at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 23. White to move.