Glossary of Judo terminology

IJF rules

IJF rules

The "IJF Rules" (International Judo Federation Rules) refers to the judging rules which apply to International Judo Federation competitions. As of the September, 2007 general meeting, the IJF has 199 registered member countries, and the IJF is active in the Olympics, international competitions, and in creating Judo contest rules. Proposed revisions to the IJF rules must be submitted to the IJF general assembly for review and approval.

Differences between the "Kodokan rules" and "IJF rules"

  • [Contest time]
    Kodokan rules  ...
    between 3 and 20 minutes
    IJF rules  ...
    5 minutes (for both men and women)
  • [Judgment types]
    Kodokan rules  ...
    Ippon gachi (Win by ippon), Waza-ari, Yuko (Effective / Moderate advantage)
    IJF rules  ...
    Ippon gachi (Win by ippon), Waza-ari, Yuko (Effective / Moderate advantage), Koka (Effect / Minor score)

There are also differences in other details such as the contest area dimensions, uniform color, overtime (golden score) bouts, and rules violations, etc.