rnbqk1nr/4bp1p/3p4/ppp1p1p1/QPP1P2P/N4P2/P2P1KP1/R1B2BNR b kq - 1 10
FEN state: rnbqk1nr/4bp1p/3p4/ppp1p1p1/QPP1P2P/N4P2/P2P1KP1/R1B2BNR b kq - 1 10 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. Black bishop at e7, black pawn at f7 and black pawn at h7. Black pawn at d6. Black pawn at a5, black pawn at b5, black pawn at c5, black pawn at e5 and black pawn at g5. White queen at a4, white pawn at b4, white pawn at c4, white pawn at e4 and white pawn at h4. White knight at a3 and white pawn at f3. White pawn at a2, white pawn at d2, white king at f2 and white pawn at g2. White rook at a1, white bishop at c1, 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.