IBJJF Rules in English and Portuguese

English: http://www.ibjjf.org/docs/rulesibjjf1stedition.pdf
Portuguese:  http://www.cbjj.com.br/docs/regrasibjjf-1aedicao.pdf

NOTE:

• In 50/50 guard, when attempting a sweep, the athlete takes the opponent down and unlocks his/her legs in an attempt to achieve top position but is unable to complete the sweep movement.

HAHAHA, no more stalling in 50/50 and trying to rack up advantages