r1b1kn1r/1p3pp1/Bbp1p3/3p2Np/5PnP/4PQ2/PPPP3R/1RB1K1N1 w kq - 0 15
FEN state: r1b1kn1r/1p3pp1/Bbp1p3/3p2Np/5PnP/4PQ2/PPPP3R/1RB1K1N1 w kq - 0 15 ; Best move: a6b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at f8 and black rook at h8. Black pawn at b7, black pawn at f7 and black pawn at g7. White bishop at a6, black bishop at b6, black pawn at c6 and black pawn at e6. Black pawn at d5, white knight at g5 and black pawn at h5. White pawn at f4, black knight at g4 and white pawn at h4. White pawn at e3 and white queen at f3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white rook at h2. White rook at b1, white bishop at c1, white king at e1 and white knight at g1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 15. White to move.