r1b1kbnr/3p1p1p/n1p1p1p1/pp2P3/1P3P1P/6P1/PqPPB3/RNBQK1NR b KQkq - 0 10
FEN state: r1b1kbnr/3p1p1p/n1p1p1p1/pp2P3/1P3P1P/6P1/PqPPB3/RNBQK1NR b KQkq - 0 10 ; Best move: b2a1
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 d7, black pawn at f7 and black pawn at h7. Black knight at a6, black pawn at c6, black pawn at e6 and black pawn at g6. Black pawn at a5, black pawn at b5 and white pawn at e5. White pawn at b4, white pawn at f4 and white pawn at h4. White pawn at g3. White pawn at a2, black queen at b2, white pawn at c2, white pawn at d2 and white bishop at e2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 10. Black to move.