r1bq1b2/n3pkp1/5pr1/p1Pp1P1B/np1P3P/1P4P1/4P3/1RBQK1NR b K - 0 18
FEN state: r1bq1b2/n3pkp1/5pr1/p1Pp1P1B/np1P3P/1P4P1/4P3/1RBQK1NR b K - 0 18 ; Best move: c8f5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black bishop at f8. Black knight at a7, black pawn at e7, black king at f7 and black pawn at g7. Black pawn at f6 and black rook at g6. Black pawn at a5, white pawn at c5, black pawn at d5, white pawn at f5 and white bishop at h5. Black knight at a4, black pawn at b4, white pawn at d4 and white pawn at h4. White pawn at b3 and white pawn at g3. White pawn at e2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, 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.