r1b3nr/1p1nkp2/p4Np1/P2pp3/2Pp2P1/2q2P2/2QRP2P/2B1KB1R b K - 3 18
FEN state: r1b3nr/1p1nkp2/p4Np1/P2pp3/2Pp2P1/2q2P2/2QRP2P/2B1KB1R b K - 3 18 ; Best move: g8f6
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7, black knight at d7, black king at e7 and black pawn at f7. Black pawn at a6, white knight at f6 and black pawn at g6. White pawn at a5, black pawn at d5 and black pawn at e5. White pawn at c4, black pawn at d4 and white pawn at g4. Black queen at c3 and white pawn at f3. White queen at c2, white rook at d2, white pawn at e2 and white pawn at h2. White bishop 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 3. Full move number is 18. Black to move.