r1b2bn1/pk2n2p/2Nq3P/1pPpppB1/3P4/N7/P1PQPPP1/R3KB1R b Q - 4 18
FEN state: r1b2bn1/pk2n2p/2Nq3P/1pPpppB1/3P4/N7/P1PQPPP1/R3KB1R b Q - 4 18 ; Best move: d6c6
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black knight at g8. Black pawn at a7, black king at b7, black knight at e7 and black pawn at h7. White knight at c6, black queen at d6 and white pawn at h6. Black pawn at b5, white pawn at c5, black pawn at d5, black pawn at e5, black pawn at f5 and white bishop at g5. White pawn at d4. White knight at a3. White pawn at a2, white pawn at c2, white queen at d2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 4. Full move number is 18. Black to move.