1nbq1bn1/r4k1r/3ppPpp/1pp5/pP1PP3/P6P/2PQ2PR/RNB1K1N1 w Q - 2 13
FEN state: 1nbq1bn1/r4k1r/3ppPpp/1pp5/pP1PP3/P6P/2PQ2PR/RNB1K1N1 w Q - 2 13 ; Best move: d4c5
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black bishop at f8 and black knight at g8. Black rook at a7, black king at f7 and black rook at h7. Black pawn at d6, black pawn at e6, white pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at b5 and black pawn at c5. Black pawn at a4, white pawn at b4, white pawn at d4 and white pawn at e4. White pawn at a3 and white pawn at h3. White pawn at c2, white queen at d2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 13. White to move.