People · Republic of Korea
SeoYeon Ju (주서연)
Pyraminx · top 10.8% of 129,321 all-time · competing since February 2024 · 2024JUSE01
SeoYeon Ju (주서연) has been competing for 3 years. Her best event is the Pyraminx: a personal-best single of 4.59, set at Korea Open 2025, puts her in the top 10.8% of the 129,321 people who have ever been ranked in the event, and 173rd in Republic of Korea. Across 7 competitions since February 2024, she has put 152 official solves on the record across seven events. Solve to solve, her 3×3 times vary about 9% around a typical one, an early reading from 8 counted rounds. That figure sets aside her 2 DNFs. Her 3×3 best has come down from 36.28 in February 2024 to 13.03, a 64% improvement. SeoYeon has entered seven competitions, more competitions than 88% 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 | |
|---|---|---|---|---|---|
| Pyraminx | 4.59 | 7.52 | top 10.8% | 173 / 1,271 | |
| Skewb | 4.46 | 5.42 | top 14.2% | 150 / 854 | |
| 3×3 | 13.03 | 15.21 | top 17.5% | 983 / 4,352 | |
| 2×2 | 3.40 | 4.65 | top 19.0% | 572 / 2,319 | |
| Clock | 11.56 | 12.46 | top 32.9% | 218 / 536 | |
| 3×3 one-handed | 25.44 | 37.57 | top 35.4% | 451 / 966 | |
| 4×4 | 1:08.28 | 1:13.94 | top 45.1% | 750 / 1,308 |
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 2026Three personal bests in one day at Korea Open 2026.
- 15 Aug 2025Six personal bests in one day at Korea Open 2025.
- 18 Jan 2025First sub-15 3×3: 13.11 at Happy Suseong 2025.
- 23 Nov 2024First sub-20 3×3: 15.80 at Hamchang Winter 2024.
- 6 Apr 2024First sub-30 3×3: 22.69 at Busan Spring 2024.
- 3 Feb 2024First competition: Daegu Cold Winter 2024. A 36.28 3×3 single to start from.
Competitions
- Korea Open 2026 · 15 Aug 2026 — 3 personal bests set
- Korea Open 2025 · 15 Aug 2025 — 6 personal bests set
- Happy Suseong 2025 · 18 Jan 2025 — 2 personal bests set
- Hamchang Winter 2024 · 23 Nov 2024 — 2 personal bests set
- Daegu Autumn 2024 · 26 Oct 2024
- Busan Spring 2024 · 6 Apr 2024 — 1 personal best set
- Daegu Cold Winter 2024 · 3 Feb 2024
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 her.
- Choi Goho (최고호) — met in 30 rounds, finished ahead 9 times
- Jihun Yang (양지훈) — met in 30 rounds, finished ahead 8 times
- Ko Youngjin (고영진) — met in 30 rounds, finished ahead 7 times
Next targets
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.59 away.
- A sub-4 Skewb single — 7,977 people have one; it is 0.46 away.
Targets move as she improves.