r3kbn1/pb1np1p1/1pp5/1P3p2/3P2p1/N1B4N/P1P1K1B1/4q3 w q - 4 25
FEN state: r3kbn1/pb1np1p1/1pp5/1P3p2/3P2p1/N1B4N/P1P1K1B1/4q3 w q - 4 25 ; Best move: e2e1
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black bishop at b7, black knight at d7, black pawn at e7 and black pawn at g7. Black pawn at b6 and black pawn at c6. White pawn at b5 and black pawn at f5. White pawn at d4 and black pawn at g4. White knight at a3, white bishop at c3 and white knight at h3. White pawn at a2, white pawn at c2, white king at e2 and white bishop at g2. Black queen at e1. Black queenside is the only castle move available. Half move number is 4. Full move number is 25. White to move.