r1b1q1r1/1p1p1kpp/p1n1p2n/1BbP4/4PP1Q/P1p4P/RPPBK1pR/1N4N1 b - - 2 18
FEN state: r1b1q1r1/1p1p1kpp/p1n1p2n/1BbP4/4PP1Q/P1p4P/RPPBK1pR/1N4N1 b - - 2 18 ; Best move: c6d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at e8 and black rook at g8. Black pawn at b7, black pawn at d7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black knight at c6, black pawn at e6 and black knight at h6. White bishop at b5, black bishop at c5 and white pawn at d5. White pawn at e4, white pawn at f4 and white queen at h4. White pawn at a3, black pawn at c3 and white pawn at h3. White rook at a2, white pawn at b2, white pawn at c2, white bishop at d2, white king at e2, black pawn at g2 and white rook at h2. White knight at b1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. Black to move.