r2q1knr/p5pp/1bn1bp2/1NpNpP2/pP6/2P1P1P1/3P3P/R1BQKB1R w KQ - 1 15
FEN state: r2q1knr/p5pp/1bn1bp2/1NpNpP2/pP6/2P1P1P1/3P3P/R1BQKB1R w KQ - 1 15 ; Best move: d5b6
The current state of the chess board is: Black rook at a8, black queen at d8, black king at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at g7 and black pawn at h7. Black bishop at b6, black knight at c6, black bishop at e6 and black pawn at f6. White knight at b5, black pawn at c5, white knight at d5, black pawn at e5 and white pawn at f5. Black pawn at a4 and white pawn at b4. White pawn at c3, white pawn at e3 and white pawn at g3. White pawn at d2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 1. Full move number is 15. White to move.