Uchi-mata
Uchi-mata is a Kodokan ashi-waza that breaks the opponent forward and sweeps upward against the inner thigh.
Judo
Ippon-seoi-nage
Ippon-seoi-nage is a Kodokan te-waza distinguished from seoi-nage by its characteristic underarm and upper-arm control.
Seoi-nage
Seoi-nage is a Kodokan te-waza that carries a broken opponent onto the back and projects them over the shoulder line.
Shido and Hansoku-make
Shido is a warning for a slight Judo infringement; the third becomes hansoku-make, while grave offences can bring immediate disqualification.
Judo Weight Classes
Current IJF Judo weight classes for senior, junior, cadet, Olympic, and team competition, with historical and Japan-specific context.
Judo Rules
Current IJF Judo rules explained: contest time, ippon, waza-ari, yuko, pins, penalties, golden score, gripping, leg grabs, and national differences.
Judo Belt Ranks
Judo belt ranks combine kyu and dan grades, but colour sequences for beginners and children vary by organisation, country, and age group.
Ne-waza
Ne-waza is Judo groundwork: the phase in which pins, strangles, arm locks, turnovers, escapes, and transitions are applied on the mat.
Kumi-kata
Kumi-kata is the method and contest of taking grips in Judo, linking posture, movement, kuzushi, attack, defence, and changing competition rules.
Gokyō no Waza
Gokyō no Waza is the Kodokan’s five-group teaching syllabus of 40 throws, revised in 1920 and distinct from the complete modern technique list.