rnb2k1r/3p2pp/1p1b1n2/p1Q1pp1P/P3NP2/1P2P2q/RBP3P1/2N1KB1R b K - 0 18
FEN state: rnb2k1r/3p2pp/1p1b1n2/p1Q1pp1P/P3NP2/1P2P2q/RBP3P1/2N1KB1R b K - 0 18 ; Best move: d6c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at d7, black pawn at g7 and black pawn at h7. Black pawn at b6, black bishop at d6 and black knight at f6. Black pawn at a5, white queen at c5, black pawn at e5, black pawn at f5 and white pawn at h5. White pawn at a4, white knight at e4 and white pawn at f4. White pawn at b3, white pawn at e3 and black queen at h3. White rook at a2, white bishop at b2, white pawn at c2 and white pawn at g2. White knight at c1, white king at e1, white bishop at f1 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.