Scoring you can trust
Scoring follows the ruleset you choose in Config, so the same tablet marks produce the expected event total without rebuilding a spreadsheet at the venue.
The system has been tested against the senior categories of the 2024 Silesian Open Judo Kata Competition.
EJU
EJU drops the highest and lowest judge totals when there are three or more official judges. A forgotten technique zeroes that technique and halves that judge's kata total once, rounded up.
kata-judge / BJA-style
kata-judge/BJA-style scoring discards per technique, keeps ordinary scores between 1 and 10, and halves without rounding up.
IJF
IJF also discards per technique: five official judges drop high and low, four drop low, and three or fewer keep every mark. IJF uses the EJU technique range, including a possible 10.5 correction, and any official forgotten mark halves the pair total once.
Marks and tie-breaks
Shadow seats never count in any ruleset.
- Technique evaluation uses small, medium, and big mistakes, forgotten techniques, and optional correction values
- Tie-breaks use fewer big mistakes, then medium, then small, then average score
How those marks are entered on the day is on judge tablets and electronic scoresheets.
Supported kata
- Nage-no-Kata (including 1G, 2G, 3G, and 3-set)
- Katame-no-Kata (including 1G)
- Ju-no-Kata
- Kime-no-Kata
- Kodokan Goshin Jutsu
- Koshiki-no-Kata
- Itsutsu-no-Kata
- Kodomo-no-Kata 1–7
Further reading
- Kodokan kata pages — definitive documentation on judo kata
- IJF Kata Commission documents — International Judo Federation kata materials
- Kata Scoresheets (EJU) — Michel Kozlowski’s Excel-based scoring software