r1b2k1r/pp3ppp/2nbp3/2pp4/2PPP2B/NP3N1P/P4PP1/R2QKB1R b KQ - 0 10
FEN state: r1b2k1r/pp3ppp/2nbp3/2pp4/2PPP2B/NP3N1P/P4PP1/R2QKB1R b KQ - 0 10 ; Best move: d5e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at c6, black bishop at d6 and black pawn at e6. Black pawn at c5 and black pawn at d5. White pawn at c4, white pawn at d4, white pawn at e4 and white bishop at h4. White knight at a3, white pawn at b3, white knight at f3 and white pawn at h3. White pawn at a2, white pawn at f2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 10. Black to move.