r1bq1k1r/p1ppb1pp/4p1Pn/8/7P/pP2P3/RNPP4/2B1KBNR b K - 0 18
FEN state: r1bq1k1r/p1ppb1pp/4p1Pn/8/7P/pP2P3/RNPP4/2B1KBNR b K - 0 18 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black bishop at e7, black pawn at g7 and black pawn at h7. Black pawn at e6, white pawn at g6 and black knight at h6. White pawn at h4. Black pawn at a3, white pawn at b3 and white pawn at e3. White rook at a2, white knight at b2, white pawn at c2 and white pawn at d2. White bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.