r1b1kbnr/2pp2qp/2n5/pp3pp1/1P2p3/2PP1PPP/P2KP3/RNBQ1BNR b kq - 1 10
FEN state: r1b1kbnr/2pp2qp/2n5/pp3pp1/1P2p3/2PP1PPP/P2KP3/RNBQ1BNR b kq - 1 10 ; Best move: a5b4
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 c7, black pawn at d7, black queen at g7 and black pawn at h7. Black knight at c6. Black pawn at a5, black pawn at b5, black pawn at f5 and black pawn at g5. White pawn at b4 and black pawn at e4. White pawn at c3, white pawn at d3, white pawn at f3, white pawn at g3 and white pawn at h3. White pawn at a2, white king at d2 and white pawn at e2. White rook at a1, white knight at b1, 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 1. Full move number is 10. Black to move.