1n5r/rp1kbp2/pq4pp/2pppn2/P2P1PKP/1PP1P3/NQ4R1/R1B2BN1 b - - 4 18
FEN state: 1n5r/rp1kbp2/pq4pp/2pppn2/P2P1PKP/1PP1P3/NQ4R1/R1B2BN1 b - - 4 18 ; Best move: c5d4
The current state of the chess board is: Black knight at b8 and black rook at h8. Black rook at a7, black pawn at b7, black king at d7, black bishop at e7 and black pawn at f7. Black pawn at a6, black queen at b6, black pawn at g6 and black pawn at h6. Black pawn at c5, black pawn at d5, black pawn at e5 and black knight at f5. White pawn at a4, white pawn at d4, white pawn at f4, white king at g4 and white pawn at h4. White pawn at b3, white pawn at c3 and white pawn at e3. White knight at a2, white queen at b2 and white rook at g2. White rook at a1, white bishop at c1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 18. Black to move.