r1bqk2r/ppp2p1p/P1n1p3/2bp2pn/3P1P2/2N3P1/R1P1PK1P/2BQ1BNR b kq - 0 10
FEN state: r1bqk2r/ppp2p1p/P1n1p3/2bp2pn/3P1P2/2N3P1/R1P1PK1P/2BQ1BNR b kq - 0 10 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. White pawn at a6, black knight at c6 and black pawn at e6. Black bishop at c5, black pawn at d5, black pawn at g5 and black knight at h5. White pawn at d4 and white pawn at f4. White knight at c3 and white pawn at g3. White rook at a2, white pawn at c2, white pawn at e2, white king at f2 and white pawn at h2. White bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 10. Black to move.