People · Republic of Korea
Seojin Oh
3×3 · top 2.6% of 284,439 all-time · competing since October 2023 · 2023OHSE01
Seojin Oh has been competing for 3 years. His best event is the 3×3: a personal-best single of 7.90, set at Hamoye Jinju 2026, puts him in the top 2.6% of the 284,439 people who have ever been ranked in the event, and 168th in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 7 competitions since October 2023, he has put 183 official solves on the record across five events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 83% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 10.79 in October 2023 to 7.90, a 27% improvement. Seojin 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 | |
|---|---|---|---|---|---|
| 3×3 | 7.90 | 8.50 | top 2.6% | 168 / 4,352 | |
| 3×3 one-handed | 11.81 | 13.66 | top 2.8% | 35 / 966 | |
| 4×4 | 39.17 | 44.01 | top 11.2% | 218 / 1,308 | |
| 5×5 | 1:14.39 | 1:24.85 | top 14.8% | 156 / 716 | |
| 2×2 | 3.98 | 5.35 | top 26.2% | 791 / 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 2024Seven personal bests in one day at Korean Championship 2024.
- 6 Apr 2024First sub-10 3×3: 9.74 at Busan Spring 2024.
- 29 Oct 2023First competition: Suncheon Fall 2023. A 11.37 3×3 single to start from.
Competitions
- Hamoye Jinju 2026 · 16 May 2026 — 1 personal best set
- We Laugh Pohanghang 2025 · 14 Sep 2025
- Happy Suseong 2025 · 18 Jan 2025 — 1 personal best set
- Hamchang Winter 2024 · 23 Nov 2024 — 1 personal best set
- Korean Championship 2024 · 15 Aug 2024 — 7 personal bests set
- Busan Spring 2024 · 6 Apr 2024 — 1 personal best set
- Suncheon Fall 2023 · 29 Oct 2023 — 1 personal best set
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.
- Seung Hyuk Nahm (남승혁) — met in 37 rounds, never finished ahead
- Jerry Hwang (황동욱) — met in 35 rounds, finished ahead 20 times
- DongSoo Park (박동수) — met in 34 rounds, never finished ahead
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 1.90 away.
- A sub-10 3×3 one-handed single — 779 people have one; it is 1.81 away.
Targets move as he improves.