r1b1k2r/p1pp3p/np1q4/P1b1Ppp1/1nPPPB2/NP5N/R5PP/3QKB1R b K - 4 16
FEN state: r1b1k2r/p1pp3p/np1q4/P1b1Ppp1/1nPPPB2/NP5N/R5PP/3QKB1R b K - 4 16 ; Best move: d6g6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at h7. Black knight at a6, black pawn at b6 and black queen at d6. White pawn at a5, black bishop at c5, white pawn at e5, black pawn at f5 and black pawn at g5. Black knight at b4, white pawn at c4, white pawn at d4, white pawn at e4 and white bishop at f4. White knight at a3, white pawn at b3 and white knight at h3. White rook at a2, white pawn at g2 and white pawn at h2. White queen at d1, 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 4. Full move number is 16. Black to move.