rn2kb1r/1p1bppp1/p2p3p/q1pQ4/1P1P4/P4N1P/1BP1PPP1/RN2KB1R w KQkq - 1 10
FEN state: rn2kb1r/1p1bppp1/p2p3p/q1pQ4/1P1P4/P4N1P/1BP1PPP1/RN2KB1R w KQkq - 1 10 ; Best move: b4a5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black bishop at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black pawn at a6, black pawn at d6 and black pawn at h6. Black queen at a5, black pawn at c5 and white queen at d5. White pawn at b4 and white pawn at d4. White pawn at a3, white knight at f3 and white pawn at h3. White bishop at b2, white pawn at c2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, 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. White to move.