People · Republic of Korea
Sunghwan Ju (주성환)
3×3 · top 4.6% of 284,439 all-time · competing since July 2022 · 2022JUSU02
Sunghwan Ju (주성환) has been competing for 4 years. His best event is the 3×3: a personal-best single of 8.90, set at Seoul Spring 2026, puts him in the top 4.6% of the 284,439 people who have ever been ranked in the event, and 278th in Republic of Korea. Until May 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since July 2022, he has put 68 official solves on the record across four events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 23.05 in July 2022 to 8.90, a 61% improvement. Sunghwan 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 | 8.90 | 10.79 | top 4.6% | 278 / 4,352 | |
| 4×4 | 48.33 | 58.79 | top 22.5% | 400 / 1,308 | |
| 2×2 | 5.04 | 5.49 | top 39.8% | 1,162 / 2,319 | |
| 5×5 | 1:58.27 | 2:15.37 | top 48.2% | 395 / 716 |
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
- 14 Dec 2024First sub-10 3×3: 9.87 at Seoul Winter 2024.
- 7 May 2023First sub-20 3×3: 13.63 at Seoul Spring 2023.
- 7 May 2023First sub-15 3×3: 13.63 at Seoul Spring 2023.
- 23 Jul 2022First competition: Seoul Summer 2022. A 23.05 3×3 single to start from.
Competitions
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Seoul Winter 2026 · 17 Jan 2026 — 1 personal best set
- Seoul Winter 2024 · 14 Dec 2024 — 2 personal bests set
- Seoul Open 2024 · 6 Jan 2024 — 2 personal bests set
- Seoul Spring 2023 · 7 May 2023 — 1 personal best set
- Seoul Summer 2022 · 23 Jul 2022
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.
- Yeeun Park (박예은) — met in 16 rounds, finished ahead twice
- Ko Youngjin (고영진) — met in 16 rounds, finished ahead once
- Choi Goho (최고호) — met in 15 rounds, finished ahead 5 times
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.90 away.
- A sub-40 4×4 single — 10,180 people have one; it is 8.33 away.
Targets move as he improves.