r1bq1k1r/1p1ppp1p/nQp3pb/8/p1P5/3PPN1P/PP1N1PP1/R1B1KB1R w - - 0 15
FEN state: r1bq1k1r/1p1ppp1p/nQp3pb/8/p1P5/3PPN1P/PP1N1PP1/R1B1KB1R w - - 0 15 ; Best move: b6d8
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at f8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black knight at a6, white queen at b6, black pawn at c6, black pawn at g6 and black bishop at h6. Black pawn at a4 and white pawn at c4. White pawn at d3, white pawn at e3, white knight at f3 and white pawn at h3. White pawn at a2, white pawn at b2, white knight at d2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 15. White to move.