rn1k4/ppq1pB1r/1b4pp/1PP5/4Pp2/P1N2P1N/6PR/R1B1K3 w Q - 1 23
FEN state: rn1k4/ppq1pB1r/1b4pp/1PP5/4Pp2/P1N2P1N/6PR/R1B1K3 w Q - 1 23 ; Best move: c1b2
The current state of the chess board is: Black rook at a8, black knight at b8 and black king at d8. Black pawn at a7, black pawn at b7, black queen at c7, black pawn at e7, white bishop at f7 and black rook at h7. Black bishop at b6, black pawn at g6 and black pawn at h6. White pawn at b5 and white pawn at c5. White pawn at e4 and black pawn at f4. White pawn at a3, white knight at c3, white pawn at f3 and white knight at h3. White pawn at g2 and white rook at h2. White rook at a1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 1. Full move number is 23. White to move.