Yantsu

Name and background

Romaji: Yantsu. Japanese: 安三. Yan (安) can express safety, security or calm; tsu/san (三) means three. The dojo pedagogically explains “security in three principles” through body, technique and mind; this is not an absolute historical interpretation. Calm means maintaining control, direction, posture and technical integrity under pressure. Some sources use Yansu; this publication uses Yantsu consistently.

Modern Kyokushin accounts describe an older form of uncertain origin, sometimes associated with Naha-te or Tomari-te and possibly a Chinese person or nineteenth-century Chinese military presence in Okinawa. Similar forms occur in Chinese kempo and Shitō-ryū, sometimes called Ansan. Today's Kyokushin version is shorter and adapted to its technical expression. Some accounts suggest Oyama adopted it through Shitō-ryū contacts, but the evidence is not unambiguous.

Introduction and position in the system

Group: higher basic / superior kata. Level: intermediate. Main counts: 20. Kiai: 13 and 18. This short but demanding form develops precision, balance, clean hands and transitions between forward power, backward-weighted control and open-hand techniques. Its brevity does not make it easy.

Prerequisites include basic stances, Pinan turns, seiken punches, open hands, Nekoashi, shōtei/koken/haitō/shutō, kick recovery, kime and zanshin. It tests open/closed hands, double punches with low shoulders, uraken/nukite alignment, Zenkutsu-to-Nekoashi balance, different palm/wrist/hand-edge controls, recovered chūdan mae geri and awareness through slow and fast phases.

Technical profile and character

The compact opening alternates double open-hand haitō, hikite, double high seiken, right/left uraken and right/left nukite. The middle changes from forward Zenkutsu punches to backward-weighted Nekoashi with shōtei, koken and shutō. The later passages turn through Musubi, change punch levels and combine kicks, haitō and the mirrored palm/wrist/shutō sequence. Keep hand forms clean, hikite active, short sequences powerful and slow control alert.

Embusen and technical diagram

Diagram unavailable: The source's embusen image is absent. Follow the directions and sequence in the text.

The compact pattern works forward and to both sides. Check the central hand opening, uraken-to-nukite transition, slow sideways double nukite, Zenkutsu advances, Nekoashi withdrawals, shōtei → koken → shutō, Musubi turns, changing-level punches, recovered kicks and final direction. Avoid adjustment steps. A diagram would not specify fingers, wrist rolling, hikite, weight, kick recovery or hand angles.

Stances and central techniques

Fudō starts/ends; Musubi serves mokusō, collected transitions and naore; Yoi/Heikō supports the opening hands. Zenkutsu supplies forward force with stable front knee, upright balance and simultaneous stance/technique completion. Nekoashi controls distance and withdrawal without falling backward or becoming passive.

Haitō jōdan morote uchi is a collected double open-hand high action, distinct from the body-supported double seiken punch. Keep shoulders low, wrists aligned and uraken circular but controlled. Chūdan yonhon nukite needs a straight line, collected fingers and hikite; slow morote yoko yonhon nukite finishes palms down. Shōtei controls the stated low/middle line with a stable wrist. Koken uses arm and body structure, not a loose wrist. Roll the wrist inward before the forward collarbone-level shutō strike. Distinguish haitō from shōtei and koken. Preserve the low-high-middle punch order and recover mae geri before the next Nekoashi action.

Start and finish

Begin in Fudō facing shinden; mokusō moves to Musubi and mokusō position. Open the eyes on Yantsu, then perform yoi with slow ibuki to Heikō. In mugōrei, begin without ongoing counting after hajime. Only 20 main counts are numbered. After 20 turn 90° clockwise, bring the left foot to Musubi and retain mokusō position. Naore returns to Fudō; yasume to rest.

Movement sequence

This pedagogical modern Kyokushin sequence supports practice and does not replace dojo instruction.

Breathing, rhythm and kiai

Distinguish collected yoi/ibuki, haitō, double seiken, alternating uraken and nukite, slow sideways opening, forward punch, Nekoashi withdrawal, palm/wrist/shutō combinations, changing-level punches, kick recovery and mirrored finish. Slow control alternates with short decisive endings. Kiai at 13 and 18 coincides with completion and supports, rather than replaces, kime.

Key points and common errors

Keep the opening purposeful; avoid confusing haitō with morote tsuki, raised shoulders, loose uraken, misdirected fingers or rushed sideways nukite. Do not shorten/raise Zenkutsu, collapse backward in Nekoashi, lose shōtei levels, isolate koken in the wrist or enlarge/soften shutō excessively. Preserve punch order, recover the kick, prefer balance to height, retain awareness through Musubi and keep mirrored passages consistent in height, line and tempo. Finish with direction, intent and zanshin.

Bunkai and application

Explore double high open-hand control, double high attack/pressure, circular uraken to the side of the head, nukite toward the centre/softer targets and sideways separating control. Shōtei manages middle/low lines, oi tsuki counters through an opening, koken deflects high and shutō drives toward collarbone/near-neck lines. Changing low-high-middle punches disrupt structure; mae geri changes the situation with controlled recovery; haitō controls inward and Nekoashi manages distance and readiness. Practise under control with a partner, keeping complexity appropriate to the form.

Training method

Learn yoi/ibuki, haitō, double seiken, right/left uraken, correct nukite and slow sideways double nukite separately. Train count 7, Zenkutsu-to-Nekoashi, low shōtei, high koken and wrist-roll/shutō. Isolate right and left Nekoashi passages, then 12–13 with level changes/kiai, recovered mae geri and haitō, followed by 17–18. Join mirrored passages; add breathing, rhythm and zanshin. Perform slowly without counting, test simple partner bunkai and return to correct technique, direction and balance.