rn1k3r/p4p2/2b4p/p1pp2p1/Pb1PnP2/1PP1Pp1P/1N4B1/R3K2R w Q - 3 23
FEN state: rn1k3r/p4p2/2b4p/p1pp2p1/Pb1PnP2/1PP1Pp1P/1N4B1/R3K2R w Q - 3 23 ; Best move: c3b4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8 and black rook at h8. Black pawn at a7 and black pawn at f7. Black bishop at c6 and black pawn at h6. Black pawn at a5, black pawn at c5, black pawn at d5 and black pawn at g5. White pawn at a4, black bishop at b4, white pawn at d4, black knight at e4 and white pawn at f4. White pawn at b3, white pawn at c3, white pawn at e3, black pawn at f3 and white pawn at h3. White knight at b2 and white bishop at g2. White rook at a1, white king at e1 and white rook at h1. White queenside is the only castle move available. Half move number is 3. Full move number is 23. White to move.