rnb1kbnr/p2p1q2/5ppp/1pp1p3/1P1P3P/2N2NP1/P1P1PP2/1RBQKBR1 b kq - 0 10
FEN state: rnb1kbnr/p2p1q2/5ppp/1pp1p3/1P1P3P/2N2NP1/P1P1PP2/1RBQKBR1 b kq - 0 10 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7 and black queen at f7. Black pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at b5, black pawn at c5 and black pawn at e5. White pawn at b4, white pawn at d4 and white pawn at h4. White knight at c3, white knight at f3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 10. Black to move.