1nbqk1n1/5pr1/r2ppbp1/1p3P1p/1Qp1P1PP/2P1R3/PP1P3N/RNB1KB2 w Q - 0 15
FEN state: 1nbqk1n1/5pr1/r2ppbp1/1p3P1p/1Qp1P1PP/2P1R3/PP1P3N/RNB1KB2 w Q - 0 15 ; Best move: g4g5
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black pawn at f7 and black rook at g7. Black rook at a6, black pawn at d6, black pawn at e6, black bishop at f6 and black pawn at g6. Black pawn at b5, white pawn at f5 and black pawn at h5. White queen at b4, black pawn at c4, white pawn at e4, white pawn at g4 and white pawn at h4. White pawn at c3 and white rook at e3. White pawn at a2, white pawn at b2, white pawn at d2 and white knight at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. White to move.