People · Republic of Korea
Seojin Park (박서진)
3×3 · top 6.1% of 284,439 all-time · competing since April 2023 · 2023PARK21
Seojin Park (박서진) has been competing for 3 years. His best event is the 3×3: a personal-best single of 9.51, set at Korea Open 2025, puts him in the top 6.1% of the 284,439 people who have ever been ranked in the event, and 363rd in Republic of Korea. Until February 2008, no official 3×3 solve in the world had been that fast. Across 4 competitions since April 2023, he has put 81 official solves on the record across six events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 10.91 in April 2023 to 9.51, a 13% improvement. Seojin has entered four competitions, more competitions than 78% 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 | 9.51 | 11.27 | top 6.1% | 363 / 4,352 | |
| 3×3 one-handed | 16.55 | 18.86 | top 11.5% | 164 / 966 | |
| 2×2 | 3.15 | 4.01 | top 16.0% | 487 / 2,319 | |
| 4×4 | 49.04 | 51.29 | top 23.5% | 418 / 1,308 | |
| Square-1 | 23.32 | 27.16 | top 35.4% | 159 / 371 | |
| 5×5 | 2:03.05 | 2:09.77 | top 51.1% | 422 / 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
- 15 Aug 2025Four personal bests in one day at Korea Open 2025.
- 6 Jan 2024First sub-10 3×3: 9.73 at Seoul Open 2024.
- 15 Apr 2023First competition: Daegu Hot Spring 2023. A 10.91 3×3 single to start from.
Competitions
- Korea Open 2025 · 15 Aug 2025 — 4 personal bests set
- Seoul Open 2024 · 6 Jan 2024 — 1 personal best set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 1 personal best set
- Daegu Hot Spring 2023 · 15 Apr 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.
- Kim Dae Hoon (김대훈) — met in 17 rounds, finished ahead 7 times
- Minseo Gu (구민서) — met in 17 rounds, finished ahead twice
- Seung Hyuk Nahm (남승혁) — met in 17 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.51 away.
- A sub-15 3×3 one-handed single — 5,987 people have one; it is 1.55 away.
Targets move as he improves.