Kuzushi is off-balancing your partner, the first of the three phases of every judo throw: kuzushi (break the balance), tsukuri (fit in) and kake (execute). Without kuzushi a throw only works through strength. Against someone your own weight, it usually doesn't work at all. You learn the three phases separately, but in randori they merge into one movement.
Kuzushi and the eight directions of off-balancing
Classical judo describes eight directions of off-balance, the happo no kuzushi. They are read from uke's point of view: forward, backward, two sides and four diagonals. Each throw has a direction it needs.
| Direction | Where uke's weight is | Examples |
|---|---|---|
| Forward (mae) | on both toes | seoi-nage, tai-otoshi |
| Backward (ushiro) | on both heels | o-soto-gari |
| Side (yoko) | on one foot, sideways | okuri-ashi-barai |
| Front diagonal (mae-sumi) | on the toes of one foot | uchi-mata, harai-goshi |
| Rear diagonal (ushiro-sumi) | on the heel of one foot | o-uchi-gari, ko-soto-gari |
The diagonals matter most in competition. A standing opponent is strong along the line of their feet. At 45 degrees they have no leg to catch themselves.
Beginners think kuzushi is done with the arms. That's half wrong. The arms give the direction: the sleeve hand (hikite) opens the path and the lapel hand (tsurite) lifts or pushes. The real off-balance comes from your feet. Pulling while you step back moves uke far more than pulling on the spot.
Action and reaction: indirect kuzushi
Uke won't stand still and let you break their balance. They resist. So the most reliable way to create kuzushi is to trigger a reaction.
Push them and they push back. Their weight comes forward, which sets up a forward throw. Pull them and they lean back to protect themselves, so their weight drops onto their heels. This is the logic behind every combination. A small rear attack like ko-uchi-gari often isn't meant to score. It's there to make uke push, so seoi-nage can go in.
Our view: this skill is what separates brown belts from blue belts. A blue belt attacks when they feel like it. A brown belt attacks when uke has just reacted.
Tsukuri: building the throw
Tsukuri is the fitting-in phase. Tori moves into the exact throwing position while uke is still off balance. For seoi-nage that means the turn and the hips sliding under uke. For o-soto-gari it means the support step beside uke, chest pressed to chest.
Uke has a tsukuri too. You place them where you want them through movement and grips. That's why kumikata, the art of gripping, matters so much. A good grip makes tsukuri easy. A bad one makes it impossible.
The classic tsukuri mistake is arriving late. Kuzushi lasts a fraction of a second. Turn in after it's gone and uke has their feet back, so you walk into a wall.
Kake: the execution
Kake is the moment the throw happens: the leg reaps, the hip lifts, the body turns. It's the most visible part and the easiest one if the first two phases are right.
Good kake is finished. Tori holds the sleeve until uke lands, which makes the fall cleaner and protects uke's head. Letting go of the sleeve too early is both a technical fault and a safety problem.
Drills to feel the three phases
Three drills that fit into any club session:
- Kuzushi only. In pairs, tori breaks uke's balance in one of the eight directions without throwing. Uke says "yes" when they can no longer recover. Five reps per direction.
- Three-phase uchi-komi. Kuzushi, tsukuri, stop. No kake. Slow uchi-komi sets exist exactly for this.
- Free movement. Uke walks around the mat and tori may only attack when uke is on one foot. This trains the eye to spot kuzushi that already exists.
These principles apply to every family covered in the nage-waza overview and to all 40 throws of the gokyo. If you only work on one thing this season, pick the third drill. Judoka who can see off-balance before they create it score with almost any technique.