rnq1kb2/pbrp4/6pn/1PpB1P1p/3P4/4p1N1/PP1N2PP/R1BK3R b q - 1 18
FEN state: rnq1kb2/pbrp4/6pn/1PpB1P1p/3P4/4p1N1/PP1N2PP/R1BK3R b q - 1 18 ; Best move: b7d5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black king at e8 and black bishop at f8. Black pawn at a7, black bishop at b7, black rook at c7 and black pawn at d7. Black pawn at g6 and black knight at h6. White pawn at b5, black pawn at c5, white bishop at d5, white pawn at f5 and black pawn at h5. White pawn at d4. Black pawn at e3 and white knight at g3. White pawn at a2, white pawn at b2, white knight at d2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white king at d1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. Black to move.