People · Republic of Korea
Junseo Jang (장준서)
3×3 · top 5.3% of 284,439 all-time · competing since January 2026 · 2026JANG01
Junseo Jang (장준서) has been competing for 8 months. His best event is the 3×3: a personal-best single of 9.19, set at Korea Open 2026, puts him in the top 5.3% of the 284,439 people who have ever been ranked in the event, and 316th in Republic of Korea. Until February 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since January 2026, he has put 124 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 15% around a typical one, an early reading from 9 counted rounds. Junseo has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Republic of Korea | |
|---|---|---|---|---|---|
| 3×3 | 9.19 | 11.66 | top 5.3% | 316 / 4,352 | |
| 4×4 | 36.66 | 39.80 | top 8.3% | 167 / 1,308 | |
| 5×5 | 1:08.13 | 1:10.03 | top 10.3% | 108 / 716 | |
| Skewb | 4.01 | 6.33 | top 11.0% | 116 / 854 | |
| 7×7 | 3:13.86 | 3:27.08 | top 14.4% | 57 / 254 | |
| 3×3 one-handed | 18.07 | 22.93 | top 15.3% | 221 / 966 | |
| 6×6 | 2:12.62 | 2:21.42 | early days — 3 solves | 77 / 329 | |
| 2×2 | 3.54 | 4.70 | top 20.7% | 622 / 2,319 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The line so far
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 15 Aug 2026Four personal bests in one day at Korea Open 2026.
- 17 Jan 2026First competition: Seoul Winter 2026. A 9.38 3×3 single to start from.
Competitions
- Korea Open 2026 · 15 Aug 2026 — 4 personal bests set
- Uhseo Osong 2026 · 13 Jun 2026
- Anyang Haseyo 2026 · 26 Apr 2026 — 1 personal best set
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Ansan Favorites 2026 · 7 Feb 2026 — 1 personal best set
- Seoul Winter 2026 · 17 Jan 2026
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Yunsung Nam — met in 24 rounds, finished ahead once
- Geunyeong Lee (이근영) — met in 23 rounds, finished ahead 6 times
- Yeojun Hwang (황여준) — met in 23 rounds, finished ahead 4 times
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.19 away.
- A sub-30 4×4 single — 2,388 people have one; it is 6.66 away.
Targets move as he improves.