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Shotokan Kata · Advanced (Brown belt)

披塞大Bassai Dai — “To Storm a Fortress”

Bassai Dai (披塞大 — “to storm / penetrate a fortress”) is the first of the advanced kata for most Shotokan students, learned around brown belt, at 42 movements. Its lesson is power and momentum: it charges from angle to angle, always driving forward, and turns weak positions into strong ones through sheer hip rotation — the repeated switching blocks (inside↔outside) are powered purely by reversing the hips. It introduces the scooping block, the mountain punch and the crescent kick. Kiai falls on moves 19 and 42. Below: the walkthrough, what it teaches, bunkai, mistakes, and grading.
Movements42
MeaningStorm a fortress
BeltBrown · 3 kyū
Kiai onMoves 19 & 42
LessonHip rotation

Move-by-move walkthrough

Step through all 42 movements. Use the arrows or press play. These are simplified schematics of a powerful, direction-changing kata — pair them with the written sequence below, and (because some connective combinations vary by lineage) with your instructor and a JKA reference.

What Bassai Dai teaches

Bassai Dai is about overwhelming force. Its name — storming a fortress — describes the spirit: you commit forward, changing lines of attack, refusing to give ground. Its central technical lesson is hip reversal: the famous opening chain of switching inside and outside blocks is driven not by the arms but by snapping the hips from one side to the other, so that a defensive, weak position instantly becomes an offensive, strong one. Learn to power those blocks from the hips and you understand the kata.

Bassai Dai is old and widely practised across styles (Passai in Okinawan systems). It is a favourite for competition and dan gradings for its dynamism and its dramatic changes of direction.

Turning weakness into strength. Watch the early switching blocks (moves 2–5, and again 23–24): each pair reverses the hips from one side to the other. The technique that looks like retreat becomes attack in the same breath. That reversal — gyaku-hanmi to hanmi — is Bassai Dai’s signature.

The full sequence, written out

A text reference for the whole kata, following the standard JKA form.

#TechniqueStance / turn

Accuracy note: JKA counts 42 with kiai on 19 & 42. The landmark moves (opening blocks 1–9, the shutō run 15–17, the side kick and back-fist 18–19, the horse-stance stamp 26, the scooping blocks 38–39, and the closing knife-hands 40–42) are consistent across sources; the exact order and handedness of some connective combinations (roughly moves 12–14 and 20–37) varies by lineage. Verify those against a JKA chart or your dōjō’s version.

Signature techniques in this kata

Bassai Dai adds several new shapes. Each links to a full breakdown in the techniques glossary.

Uchi↔soto hip-switch内・外受け Sukui-uke掬い受け Yama-zuki山突き Mikazuki-geri三日月蹴り Yoko-geri kekomi横蹴り蹴込み Manji-uke卍受け

Bunkai — what the movements do分解

Read Bassai Dai as charging in and reversing an attacker’s momentum against them.

The switching blocks — moves 2–5

Each hip reversal redirects a punch and simultaneously loads a counter: you deflect one attack while the returning hip drives your own arm through — defence and offence in the same motion.

Scoop and throw — move 6

The scooping block catches an incoming kick or a leg and lifts it, uprooting the attacker for a throw — the kata’s answer to a low attack.

Knee, side kick, back-fist — moves 18–19

Lift the knee to clear or check a leg, thrust the side kick into the attacker’s middle, and land the back-fist to the head — the first kiai, a complete finishing burst.

Honest caveat. Bunkai is interpretive; the same posture carries several valid applications. Treat these as starting points to explore with an instructor.

Common mistakes

Arming the switching blocks.

The inside/outside block chain must be driven by hip reversal, not shoulder swing. If your hips aren’t snapping side to side, you’ve missed the whole kata.

A tentative opening.

Bassai Dai charges in on move 1 — commit to the forward drive. A soft, cautious entrance kills its “storming” spirit.

Losing forward intention.

Even when turning, the feeling is always of pressing forward and overwhelming. Retreating or shrinking between techniques drains its momentum.

Rushing the slow moves.

The deliberate open-hand and scooping moments provide contrast; snapping through them flattens the kata’s dynamics.

How Bassai Dai is graded

At brown belt and into the dan grades, Bassai Dai is judged on hip-driven switching blocks (not arm-swung), a committed forward, storming spirit, clear changes of direction with strong stances, the side kick and back-fist burst at the first kiai, controlled contrast between fast and slow passages, the two kiai, and an accurate embusen. Requirements vary by association — confirm with your dōjō.

Watch a reference performance演武

The illustrations on this page are study schematics — they show the shape of each move, not a real body in motion. To see Bassai Dai performed at full speed by senior instructors, watch reference footage:

▶ Watch “Bassai Dai” performances on YouTube

Opens a YouTube search in a new tab. Look for JKA / Japan Karate Association or established Shotokan instructor demonstrations for the most standard version of the form.

What to learn next

Or explore Jion and Empi, or return to the kata library.

Bassai Dai — frequently asked questions