r4bn1/pp1np1pr/1q3pkp/2p5/1P1p2bP/B1N2PPN/P1PPP3/RQ2KBR1 w Q - 12 13
FEN state: r4bn1/pp1np1pr/1q3pkp/2p5/1P1p2bP/B1N2PPN/P1PPP3/RQ2KBR1 w Q - 12 13 ; Best move: c3d5
The current state of the chess board is: Black rook at a8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black knight at d7, black pawn at e7, black pawn at g7 and black rook at h7. Black queen at b6, black pawn at f6, black king at g6 and black pawn at h6. Black pawn at c5. White pawn at b4, black pawn at d4, black bishop at g4 and white pawn at h4. White bishop at a3, white knight at c3, white pawn at f3, white pawn at g3 and white knight at h3. White pawn at a2, white pawn at c2, white pawn at d2 and white pawn at e2. White rook at a1, white queen at b1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 12. Full move number is 13. White to move.