r1b3nr/p1npkpp1/2p1pb1p/2P5/4PP2/B2P3N/3N1K1P/R2Q1BR1 b - - 4 18
FEN state: r1b3nr/p1npkpp1/2p1pb1p/2P5/4PP2/B2P3N/3N1K1P/R2Q1BR1 b - - 4 18 ; Best move: f6d4
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 a7, black knight at c7, black pawn at d7, black king at e7, black pawn at f7 and black pawn at g7. Black pawn at c6, black pawn at e6, black bishop at f6 and black pawn at h6. White pawn at c5. White pawn at e4 and white pawn at f4. White bishop at a3, white pawn at d3 and white knight at h3. White knight at d2, white king at f2 and white pawn at h2. White rook at a1, white queen at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 18. Black to move.