Brighton increased their lead at the top of League One to four points but had to be content with a point against promotion rivals Charlton after a 1-1 draw at a misty Withdean Stadium.
The Seagulls had to play 83 minutes with 10 men following the seventh-minute sending off of defender Inigo Calderon.
The Spaniard was shown a straight red card following a crunching tackle on Therry Racon.
Top scorer Johnnie Jackson gave Charlton the lead in the third minute with his 10th goal of the season from the penalty spot after Marcos Painter was penalised for a foul on Joe Anyinsah.
Brighton hit back to equalise nine minutes before the interval through striker Glenn Murray, who expertly hooked in a ball from defender Adam El-Abd.