What is the difference between IBJJF and ADCC rules?

IBJJF and ADCC represent two different philosophies of competitive grappling. IBJJF emphasizes positional dominance through its points system, where advancing position earns scores. Technique restrictions by belt level create a progressive learning environment. ADCC emphasizes submissions by making the first half of every match submission only, encouraging aggressive finishing attempts without the safety net of points. ADCC allows virtually all techniques including heel hooks, which changes the tactical landscape significantly. In IBJJF, guard pulling has no point consequence, while ADCC penalizes pulling guard, encouraging standing engagement. IBJJF matches are shorter with immediate points, rewarding positional grapplers. ADCC matches are longer with a submission-focused opening period, rewarding finishers. Many competitors train for both rule sets, adapting their game accordingly. Understanding both systems makes you a more complete competitor and helps you appreciate different aspects of the art.