rnbq1br1/3k1p1p/p2p2p1/2pPpnB1/1PP1P3/1P3N2/3N1P1P/RQ2KBR1 w Q - 1 15
FEN state: rnbq1br1/3k1p1p/p2p2p1/2pPpnB1/1PP1P3/1P3N2/3N1P1P/RQ2KBR1 w Q - 1 15 ; Best move: g5d8
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black king at d7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at d6 and black pawn at g6. Black pawn at c5, white pawn at d5, black pawn at e5, black knight at f5 and white bishop at g5. White pawn at b4, white pawn at c4 and white pawn at e4. White pawn at b3 and white knight at f3. White knight at d2, white pawn at f2 and white pawn at h2. White rook at a1, white queen at b1, 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 1. Full move number is 15. White to move.