MODULE · 知識
Beyond technique names.
The Knowledge Quiz dives into every corner of judo. Over 200 illustrated questions — rules, history, champions, culture — split across three difficulty levels. Answer fast, earn points, unlock badges and climb the leaderboard.
Badge progression
Advance badge by badge all the way to Master. The home screen shows your current badge, your progress toward the next one and your full lifetime statistics.
Illustrated questions by difficulty
Every question comes with an illustration and a difficulty rating — easy, medium or hard. A per-question countdown and a global 2-minute timer keep every round intense.
Best score analysis
Review your best game in detail: score per question, correct and incorrect totals, and a breakdown by difficulty level — so you can see your strengths and know where to improve.
Time bonuses and penalties
Every correct answer adds time; every wrong one takes it away. Chain 5, 10 or 20 correct answers in a row to trigger a cumulative time bonus — and avoid consecutive wrong answers, which stack an extra time penalty on top.
Free & Premium
Free: 2 games per day. Premium: unlimited games.
HOW IT WORKS
Three steps to a higher score.
- 01
Start a round
A global 2-minute timer kicks off. Every correct answer adds time; every wrong answer takes some away. The round ends when time runs out or all questions have been answered.
- 02
Answer the questions
An illustration accompanies each question, along with an 20-second countdown. Four answer choices and a difficulty badge — easy, medium or hard. The faster you answer, the more points you score.
- 03
Unlock badges
Your points accumulate and push you toward the next badge. Check your best score with the difficulty breakdown to target the areas where you can improve most.
IN THE APP
Progress, quiz and best score.
TOPIC AREAS
Four pillars of judo knowledge.
Questions span the full scope of judo — from competition rules to the history of the sport and the legends who shaped it.
- 01
Rules & Scoring
Ippon, waza-ari, shido, hansoku-make — the scoring system, prohibited acts and how matches are decided.
- 02
History
Jigoro Kano, the Kodokan, Olympic judo, the origins and evolution of the sport.
- 03
Famous Judoka
Olympic champions, world champions and kodansha — the athletes who have shaped the sport and made their mark on history.
- 04
Techniques & Judo Culture
The values and vocabulary of judo, the terminology used for techniques.
Begin your path.
Free to download. Free to use. Built by judoka, for judoka.