rn2kb1r/pp1qp1pp/2p1bn2/1P3p2/1BPP4/5PP1/P2PBN1P/RN1QK2R b KQkq - 4 13
FEN state: rn2kb1r/pp1qp1pp/2p1bn2/1P3p2/1BPP4/5PP1/P2PBN1P/RN1QK2R b KQkq - 4 13 ; Best move: c6b5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black queen at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at c6, black bishop at e6 and black knight at f6. White pawn at b5 and black pawn at f5. White bishop at b4, white pawn at c4 and white pawn at d4. White pawn at f3 and white pawn at g3. White pawn at a2, white pawn at d2, white bishop at e2, white knight at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 4. Full move number is 13. Black to move.