r1bq1bn1/3npkp1/p1pp3r/P4P1P/2p2P2/1R1PN2N/1P3KP1/2B2B1R b - - 6 20
FEN state: r1bq1bn1/3npkp1/p1pp3r/P4P1P/2p2P2/1R1PN2N/1P3KP1/2B2B1R b - - 6 20 ; Best move: c4b3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black knight at g8. Black knight at d7, black pawn at e7, black king at f7 and black pawn at g7. Black pawn at a6, black pawn at c6, black pawn at d6 and black rook at h6. White pawn at a5, white pawn at f5 and white pawn at h5. Black pawn at c4 and white pawn at f4. White rook at b3, white pawn at d3, white knight at e3 and white knight at h3. White pawn at b2, white king at f2 and white pawn at g2. White bishop at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 6. Full move number is 20. Black to move.