rn1q1b1r/pppb1p2/2nk2p1/3ppB1p/5P1P/1PP1P2N/P2PQ1PR/RNB1K3 b Q - 8 10
FEN state: rn1q1b1r/pppb1p2/2nk2p1/3ppB1p/5P1P/1PP1P2N/P2PQ1PR/RNB1K3 b Q - 8 10 ; Best move: d7f5
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 b7, black pawn at c7, black bishop at d7 and black pawn at f7. Black knight at c6, black king at d6 and black pawn at g6. Black pawn at d5, black pawn at e5, white bishop at f5 and black pawn at h5. White pawn at f4 and white pawn at h4. White pawn at b3, white pawn at c3, white pawn at e3 and white knight at h3. White pawn at a2, white pawn at d2, white queen at e2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 8. Full move number is 10. Black to move.