rnb1kbn1/1p3ppr/B2pp2p/p1p5/P4P1q/1P2P1Q1/2PP2PP/RNB1K1NR w KQq - 4 10
FEN state: rnb1kbn1/1p3ppr/B2pp2p/p1p5/P4P1q/1P2P1Q1/2PP2PP/RNB1K1NR w KQq - 4 10 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at f7, black pawn at g7 and black rook at h7. White bishop at a6, black pawn at d6, black pawn at e6 and black pawn at h6. Black pawn at a5 and black pawn at c5. White pawn at a4, white pawn at f4 and black queen at h4. White pawn at b3, white pawn at e3 and white queen at g3. White pawn at c2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 4. Full move number is 10. White to move.