r4kr1/np4qp/2ppb1p1/p1b1pP2/7P/PP1QnN2/3P1P2/RNBBK2R b Q - 2 24
FEN state: r4kr1/np4qp/2ppb1p1/p1b1pP2/7P/PP1QnN2/3P1P2/RNBBK2R b Q - 2 24 ; Best move: e6f5
The current state of the chess board is: Black rook at a8, black king at f8 and black rook at g8. Black knight at a7, black pawn at b7, black queen at g7 and black pawn at h7. Black pawn at c6, black pawn at d6, black bishop at e6 and black pawn at g6. Black pawn at a5, black bishop at c5, black pawn at e5 and white pawn at f5. White pawn at h4. White pawn at a3, white pawn at b3, white queen at d3, black knight at e3 and white knight at f3. White pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1, white bishop at d1, white king at e1 and white rook at h1. White queenside is the only castle move available. Half move number is 2. Full move number is 24. Black to move.