r1b1k1nr/pp1pbpp1/4p1qp/nBp5/1P1QP3/5K2/P1PP1PPP/RNB3NR b kq - 3 10
FEN state: r1b1k1nr/pp1pbpp1/4p1qp/nBp5/1P1QP3/5K2/P1PP1PPP/RNB3NR b kq - 3 10 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black bishop at e7, black pawn at f7 and black pawn at g7. Black pawn at e6, black queen at g6 and black pawn at h6. Black knight at a5, white bishop at b5 and black pawn at c5. White pawn at b4, white queen at d4 and white pawn at e4. White king at f3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 3. Full move number is 10. Black to move.