r1b1kb1r/p3p1p1/B1qp3n/5p1p/1PP2P2/P4N2/3PQ1PP/RNB1K2R w KQkq - 0 13
FEN state: r1b1kb1r/p3p1p1/B1qp3n/5p1p/1PP2P2/P4N2/3PQ1PP/RNB1K2R w KQkq - 0 13 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at e7 and black pawn at g7. White bishop at a6, black queen at c6, black pawn at d6 and black knight at h6. Black pawn at f5 and black pawn at h5. White pawn at b4, white pawn at c4 and white pawn at f4. White pawn at a3 and white knight at f3. White pawn at d2, white queen at e2, 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 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. White to move.