r1b2bkr/1ppqp2p/p7/nPnp1pp1/N4PP1/P2P3B/2PNP2P/R1BQ1K1R b - - 0 17
FEN state: r1b2bkr/1ppqp2p/p7/nPnp1pp1/N4PP1/P2P3B/2PNP2P/R1BQ1K1R b - - 0 17 ; Best move: c5a4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black king at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black queen at d7, black pawn at e7 and black pawn at h7. Black pawn at a6. Black knight at a5, white pawn at b5, black knight at c5, black pawn at d5, black pawn at f5 and black pawn at g5. White knight at a4, white pawn at f4 and white pawn at g4. White pawn at a3, white pawn at d3 and white bishop at h3. White pawn at c2, white knight at d2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 17. Black to move.