rnq1bbn1/5k1r/p1p3pp/2Pp1p2/2Q2PP1/N7/PP1NK2P/1RB2B1R b - - 2 21
FEN state: rnq1bbn1/5k1r/p1p3pp/2Pp1p2/2Q2PP1/N7/PP1NK2P/1RB2B1R b - - 2 21 ; Best move: d5c4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black bishop at e8, black bishop at f8 and black knight at g8. Black king at f7 and black rook at h7. Black pawn at a6, black pawn at c6, black pawn at g6 and black pawn at h6. White pawn at c5, black pawn at d5 and black pawn at f5. White queen at c4, white pawn at f4 and white pawn at g4. White knight at a3. White pawn at a2, white pawn at b2, white knight at d2, white king at e2 and white pawn at h2. White rook at b1, white bishop at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.