r1b1kbr1/6n1/p2pp1q1/1p1B1pp1/PP4P1/1KNPPQP1/1B6/R5NR w q - 4 24
FEN state: r1b1kbr1/6n1/p2pp1q1/1p1B1pp1/PP4P1/1KNPPQP1/1B6/R5NR w q - 4 24 ; Best move: d5a8
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black knight at g7. Black pawn at a6, black pawn at d6, black pawn at e6 and black queen at g6. Black pawn at b5, white bishop at d5, black pawn at f5 and black pawn at g5. White pawn at a4, white pawn at b4 and white pawn at g4. White king at b3, white knight at c3, white pawn at d3, white pawn at e3, white queen at f3 and white pawn at g3. White bishop at b2. White rook at a1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 24. White to move.