Joint locks: armbar, kimura, americana, omoplata, kneebar (brown/black only), ankle locks (legal subset); Chokes: rear-naked, triangle, guillotine, etc.; Opponent taps with hand, foot, or verbally → instant win
Why people argue about this
People often assume that tapping out is just a sign of conceding defeat, when in fact it's explicitly stated as the only way to win by submission - an opponent must tap to acknowledge they've been locked into a joint lock or choke. They overlook the clear stipulation that taps are the definitive signal for a submission victory.