rn1q1b1r/p4ppp/b1kpp3/1ppn3P/2N5/1QP4N/PP1PPPPR/R1B1KB2 w Q - 3 10
FEN state: rn1q1b1r/p4ppp/b1kpp3/1ppn3P/2N5/1QP4N/PP1PPPPR/R1B1KB2 w Q - 3 10 ; Best move: c4a3
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6, black king at c6, black pawn at d6 and black pawn at e6. Black pawn at b5, black pawn at c5, black knight at d5 and white pawn at h5. White knight at c4. White queen at b3, white pawn at c3 and white knight at h3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 3. Full move number is 10. White to move.