4kb1r/2ppq1pp/b3r2n/1pP1pp2/2B1PP2/BPN2N1P/P1KPn1P1/R6R b - - 9 20
FEN state: 4kb1r/2ppq1pp/b3r2n/1pP1pp2/2B1PP2/BPN2N1P/P1KPn1P1/R6R b - - 9 20 ; Best move: b5c4
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black queen at e7, black pawn at g7 and black pawn at h7. Black bishop at a6, black rook at e6 and black knight at h6. Black pawn at b5, white pawn at c5, black pawn at e5 and black pawn at f5. White bishop at c4, white pawn at e4 and white pawn at f4. White bishop at a3, white pawn at b3, white knight at c3, white knight at f3 and white pawn at h3. White pawn at a2, white king at c2, white pawn at d2, black knight at e2 and white pawn at g2. White rook at a1 and white rook at h1. Both players have exhausted their castles. Half move number is 9. Full move number is 20. Black to move.