r1b1kbnr/1pp2p1p/p7/n2pp1q1/3P4/PQP1P1P1/1P3P1P/RNB1KB1R b KQkq - 1 10
FEN state: r1b1kbnr/1pp2p1p/p7/n2pp1q1/3P4/PQP1P1P1/1P3P1P/RNB1KB1R b KQkq - 1 10 ; Best move: a5b3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at a6. Black knight at a5, black pawn at d5, black pawn at e5 and black queen at g5. White pawn at d4. White pawn at a3, white queen at b3, white pawn at c3, white pawn at e3 and white pawn at g3. White pawn at b2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 10. Black to move.