r1bqk3/4pp2/3p4/pp6/P4N1r/nn5P/N2PB1P1/R1BK1R2 b q - 1 25
FEN state: r1bqk3/4pp2/3p4/pp6/P4N1r/nn5P/N2PB1P1/R1BK1R2 b q - 1 25 ; Best move: b5b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at e8. Black pawn at e7 and black pawn at f7. Black pawn at d6. Black pawn at a5 and black pawn at b5. White pawn at a4, white knight at f4 and black rook at h4. Black knight at a3, black knight at b3 and white pawn at h3. White knight at a2, white pawn at d2, white bishop at e2 and white pawn at g2. White rook at a1, white bishop at c1, white king at d1 and white rook at f1. Black queenside is the only castle move available. Half move number is 1. Full move number is 25. Black to move.