People · Republic of Korea
Seo Hyungmin (서형민)
3×3 · top 5.2% of 288,433 all-time · competing since February 2023 · 2023HYUN02
Seo Hyungmin (서형민) has been competing for 4 years. His best event is the 3×3: a personal-best single of 9.12, set at Korea Open 2026, puts him in the top 5.2% of the 288,433 people who have ever been ranked in the event, and 307th in Republic of Korea. Until May 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since February 2023, he has put 80 official solves on the record across six events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 19.05 in April 2023 to 9.12, a 52% improvement. Seo 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 | 9.12 | 11.64 | top 5.2% | 307 / 4,390 | |
| 2×2 | 2.88 | 4.66 | top 12.9% | 394 / 2,334 | |
| Skewb | 8.02 | 14.51 | top 41.5% | 418 / 874 | |
| 4×4 | 1:06.69 | 1:13.78 | top 43.7% | 736 / 1,316 | |
| Pyraminx | 9.13 | 14.08 | top 46.0% | 688 / 1,294 | |
| 5×5 | 2:54.85 | — | early days — 1 solve | 599 / 725 |
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 2026First sub-15 3×3: 9.67 at Korea Open 2026.
- 15 Aug 2026First sub-10 3×3: 9.67 at Korea Open 2026.
- 15 Aug 2026Four personal bests in one day at Korea Open 2026.
- 25 Feb 2023First competition: Please Be Quiet Daegu 2023.
Competitions
- Okay Okcheon 2026 · 17 Oct 2026
- Korea Open 2026 · 15 Aug 2026 — 4 personal bests set
- Korean Championship 2023 · 15 Dec 2023
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 2 personal bests set
- Daegu Hot Spring 2023 · 15 Apr 2023
- Please Be Quiet Daegu 2023 · 25 Feb 2023
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.
- DongSoo Park (박동수) — met in 18 rounds, never finished ahead
- Ko Youngjin (고영진) — met in 17 rounds, finished ahead twice
- Woobin Hwang (황우빈) — met in 16 rounds, finished ahead twice
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 1.12 away.
- A sub-2 2×2 single — 9,039 people have one; it is 0.88 away.
Targets move as he improves.