r2qkbnr/p2b2pp/n2p4/2p1pB2/1p1PP3/4KP1N/PPPB2PP/RN1Q3R b kq - 1 10
FEN state: r2qkbnr/p2b2pp/n2p4/2p1pB2/1p1PP3/4KP1N/PPPB2PP/RN1Q3R b kq - 1 10 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at d7, black pawn at g7 and black pawn at h7. Black knight at a6 and black pawn at d6. Black pawn at c5, black pawn at e5 and white bishop at f5. Black pawn at b4, white pawn at d4 and white pawn at e4. White king at e3, white pawn at f3 and white knight at h3. White pawn at a2, white pawn at b2, white pawn at c2, white bishop at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 10. Black to move.