r1b2bnr/1pp2q2/p1npp2p/4kpp1/3NP2P/N2P1BP1/PPP1QP2/R1B1K1R1 b Q - 2 18
FEN state: r1b2bnr/1pp2q2/p1npp2p/4kpp1/3NP2P/N2P1BP1/PPP1QP2/R1B1K1R1 b Q - 2 18 ; Best move: c6d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7 and black queen at f7. Black pawn at a6, black knight at c6, black pawn at d6, black pawn at e6 and black pawn at h6. Black king at e5, black pawn at f5 and black pawn at g5. White knight at d4, white pawn at e4 and white pawn at h4. White knight at a3, white pawn at d3, white bishop at f3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2, white queen at e2 and white pawn at f2. White rook at a1, white bishop at c1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 18. Black to move.