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Shotokan Kata · Advanced (Dan grade)

披塞小Bassai Shō — “To Storm a Fortress, Minor”

Bassai Shō (披塞小 — the “minor” Bassai) is the smaller, more technical companion to Bassai Dai, 27 movements, a dan-grade kata. Where Bassai Dai overwhelms with power, Bassai Shō is subtle: it is built around defence against the bō (staff) — staff blocks and staff-grabs — with tiger-mouth grasping blocks, one-legged crane-stance kicks and foot sweeps. It has no jump; its springing feel comes from the crane-stance and sweeping transitions. Kiai falls on moves 17 and 22. Below: the walkthrough, what it teaches, bunkai, mistakes, and grading.
Movements27
MeaningStorm fortress (minor)
BeltDan grade
Kiai onMoves 17 & 22
ThemeStaff defence

Move-by-move walkthrough

Step through all 27 movements. Use the arrows or press play. These are simplified schematics — pair them with the written sequence below and your instructor, especially for the staff-defence and crane-stance passages.

What Bassai Shō teaches

Bassai Shō is the technician’s Bassai. It keeps the spirit of storming a fortress but expresses it through smaller, subtler, more precise waza rather than raw force. Its heart is weapon defence: two-handed staff blocks catch a bō, and tiger-mouth grasping blocks (the “bassai-uke”) seize and control it. Around these it weaves one-legged crane-stance side kicks and de-ashi-barai foot sweeps — hence its light, springing character.

It was created by Ankō Itosu as the lesser counterpart to Bassai Dai, and shares much of its cousin’s vocabulary, which is why the two are studied together.

Grabbing the staff. The two-hand staff blocks (moves 2 & 4) and the grasping blocks (16, 26, 27) are Bassai Shō’s signature — catching and controlling a bō rather than smashing through it. It is one of Shotokan’s clearest weapon-defence kata alongside Jitte.

The full sequence, written out

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

#TechniqueStance / turn

Accuracy note: JKA counts 27 with kiai now on 17 & 22 (historically 17 & 25). Moves 20/23–25 fuse an outside block + foot sweep + double side punch into single counts. Bassai Shō has no jump.

Signature techniques in this kata

Bassai Shō’s vocabulary is weapon-defence and control. Each links to a full breakdown in the techniques glossary.

Bō-uke棒受け Tsukami-uke (bassai-uke)掴み受け Sagi-ashi-dachi鷺足立ち De-ashi-barai出足払い Manji-kamae卍構え Morote sokumen-zuki諸手側面突き

Bunkai — what the movements do分解

Read Bassai Shō as controlling a weapon and sweeping an opponent off their feet.

Catching the staff — moves 2, 4, 16

The two-hand block meets a thrusting or descending bō and traps it against your forearms; the grasping block then seizes it, so you control the weapon and the wielder in one motion.

Crane kick and grab — moves 6, 17

Lifting into the crane clears a leg or checks a kick; the side kick strikes while the hands grab and pull the attacker onto it — the first kiai is exactly this catch-and-strike.

Block, sweep, double punch — moves 20, 23–25

The outside block turns a punch aside, the foot sweep takes the attacker’s base, and the double side punch lands as they fall — a complete off-balance-and-finish, drilled to three angles.

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

Common mistakes

Treating it like Bassai Dai.

Bassai Shō is smaller-frame and more technical — precise, controlled, subtle. Muscling it with Bassai Dai’s big power misses its character.

Wobbling in the crane.

The one-legged sagi-ashi-dachi must be balanced and still before the kick fires; rushing off an unsteady leg loses the technique.

Vague staff blocks.

The two-hand blocks and grasps mean something specific — catch and control a weapon. Perform them with that intent and keep the hands working as a pair.

Weak foot sweeps.

The de-ashi-barai in moves 20/23–25 must actually take the base — sweep with intent, timed with the double punch.

How Bassai Shō is graded

As a dan-grade kata, Bassai Shō is judged on precise, controlled technique rather than raw power, convincing weapon-defence blocks and grasps, balanced crane stances, well-timed foot sweeps into the double punches, 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 Shō performed at full speed by senior instructors, watch reference footage:

▶ Watch “Bassai Shō” 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 revisit Bassai Dai and Jitte, or return to the kata library.

Bassai Shō — frequently asked questions