r1b1kb1r/pp5p/B1p4n/2q1PpP1/RP6/P1N3PN/2PP1P2/RQ3K2 b q - 0 18
FEN state: r1b1kb1r/pp5p/B1p4n/2q1PpP1/RP6/P1N3PN/2PP1P2/RQ3K2 b q - 0 18 ; Best move: c5e5
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 h8. Black pawn at a7, black pawn at b7 and black pawn at h7. White bishop at a6, black pawn at c6 and black knight at h6. Black queen at c5, white pawn at e5, black pawn at f5 and white pawn at g5. White rook at a4 and white pawn at b4. White pawn at a3, white knight at c3, white pawn at g3 and white knight at h3. White pawn at c2, white pawn at d2 and white pawn at f2. White rook at a1, white queen at b1 and white king at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.