r1b1k1nr/p3qp2/QPp4p/3pp1p1/1b5P/N4P2/P2PP1P1/R1B1KBNR w KQkq - 1 10
FEN state: r1b1k1nr/p3qp2/QPp4p/3pp1p1/1b5P/N4P2/P2PP1P1/R1B1KBNR w KQkq - 1 10 ; Best move: a6a4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at e7 and black pawn at f7. White queen at a6, white pawn at b6, black pawn at c6 and black pawn at h6. Black pawn at d5, black pawn at e5 and black pawn at g5. Black bishop at b4 and white pawn at h4. White knight at a3 and white pawn at f3. White pawn at a2, white pawn at d2, white pawn at e2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1, 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 1. Full move number is 10. White to move.