r1bqk2r/2pp1p1p/p7/1P3Pp1/1nQbp1P1/B6n/P3P2P/RN2KBNR w KQkq - 0 15
FEN state: r1bqk2r/2pp1p1p/p7/1P3Pp1/1nQbp1P1/B6n/P3P2P/RN2KBNR w KQkq - 0 15 ; Best move: a3b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black pawn at a6. White pawn at b5, white pawn at f5 and black pawn at g5. Black knight at b4, white queen at c4, black bishop at d4, black pawn at e4 and white pawn at g4. White bishop at a3 and black knight at h3. White pawn at a2, white pawn at e2 and white pawn at h2. White rook at a1, white knight at b1, 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 0. Full move number is 15. White to move.