“Osae komi waza” (Hold-down techniques) is one of Katame-waza (grappling techniques) (Ne waza [Ground techniques]), and consists of covering the opponent with your body, etc., to prevent them from escaping.
Points are awarded in accordance with the hold-down time. In the International Judo Federation rules, a pin of 20 seconds results in a with an Ippon gachi (Win by ippon).
However, a hold-down is deemed broken “Toketa (Hold-down broken)” if the pinned combatant manages to scissor the pinning combatant’s leg with both of their legs, and the time count is stopped at that point. Points are not awarded for a hold-down outside the contest area.
The Kodokan and IJF Academy teaching videos are 60 seconds in length.