Unlike Olympic wrestling, oil wrestling matches may be won by achieving an effective hold of the . Thus, the aims to control his opponent by putting his arm through the latter's . To win by this move is called . Originally, matches had no set duration and could go on for one or two days, until one man was able to establish superiority, but in 1975 the duration was capped at 40 minutes for the and 30 minutes for the category. If no winner is determined, another 15 minutes—10 minutes for the category—of wrestling ensues, wherein scores are kept to determine the victor.