rnb2bn1/p2kppp1/1q1p4/1p2P1Np/1Pp5/P2B3P/RBrP1PP1/1N1Q1K1R b - - 4 18
FEN state: rnb2bn1/p2kppp1/1q1p4/1p2P1Np/1Pp5/P2B3P/RBrP1PP1/1N1Q1K1R b - - 4 18 ; Best move: c4d3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black bishop at f8 and black knight at g8. Black pawn at a7, black king at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black queen at b6 and black pawn at d6. Black pawn at b5, white pawn at e5, white knight at g5 and black pawn at h5. White pawn at b4 and black pawn at c4. White pawn at a3, white bishop at d3 and white pawn at h3. White rook at a2, white bishop at b2, black rook at c2, white pawn at d2, white pawn at f2 and white pawn at g2. White knight at b1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 18. Black to move.