r2k1bnr/pp2p2p/n4Bp1/Pb1p4/2p4P/N6N/2PPPPP1/R2QKBR1 w Q - 0 15
FEN state: r2k1bnr/pp2p2p/n4Bp1/Pb1p4/2p4P/N6N/2PPPPP1/R2QKBR1 w Q - 0 15 ; Best move: f6h8
The current state of the chess board is: Black rook at a8, black king at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7 and black pawn at h7. Black knight at a6, white bishop at f6 and black pawn at g6. White pawn at a5, black bishop at b5 and black pawn at d5. Black pawn at c4 and white pawn at h4. White knight at a3 and white knight at h3. White pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. White to move.