r1b2b1r/2ppkpp1/1p3n1p/p2PpPB1/1P6/P2P4/2P1N1PP/RNQ1KB1R w Q - 1 15
FEN state: r1b2b1r/2ppkpp1/1p3n1p/p2PpPB1/1P6/P2P4/2P1N1PP/RNQ1KB1R w Q - 1 15 ; Best move: g5f6
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black king at e7, black pawn at f7 and black pawn at g7. Black pawn at b6, black knight at f6 and black pawn at h6. Black pawn at a5, white pawn at d5, black pawn at e5, white pawn at f5 and white bishop at g5. White pawn at b4. White pawn at a3 and white pawn at d3. White pawn at c2, white knight at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at c1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 1. Full move number is 15. White to move.