People · Republic of Korea
Jeong Seungcheol (정승철)
Pyraminx · top 8.0% of 130,891 all-time · competing since May 2026 · 2026SEUN01
Jeong Seungcheol (정승철) has been competing for 5 months. His best event is the Pyraminx: a personal-best single of 4.06, set at Ansan Autumn 2026, puts him in the top 8.0% of the 130,891 people who have ever been ranked in the event, and 131st in Republic of Korea. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 5 competitions since May 2026, he has put 81 official solves on the record across five events. Solve to solve, his 3×3 times vary about 9% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 17.88 in May 2026 to 14.01, a 22% improvement. Jeong has entered five competitions, more competitions than 83% 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 | 4.06 | 5.99 | top 8.0% | 131 / 1,294 | |
| 3×3 | 14.01 | 15.04 | top 21.1% | 1,154 / 4,390 | |
| Skewb | 5.41 | 7.47 | top 21.3% | 219 / 874 | |
| 2×2 | 3.62 | 4.33 | top 21.8% | 651 / 2,334 | |
| 3×3 one-handed | 30.07 | 35.37 | top 46.9% | 592 / 981 |
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: 14.31 at Korea Open 2026.
- 15 Aug 2026Three personal bests in one day at Korea Open 2026.
- 16 May 2026First competition: Hamoye Jinju 2026. A 17.88 3×3 single to start from.
Competitions
- Okay Okcheon 2026 · 17 Oct 2026 — 1 personal best set
- Ansan Autumn 2026 · 19 Sep 2026 — 1 personal best set
- Korea Open 2026 · 15 Aug 2026 — 3 personal bests set
- Uhseo Osong 2026 · 13 Jun 2026 — 1 personal best set
- Hamoye Jinju 2026 · 16 May 2026
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.
- Ko Youngjin (고영진) — met in 17 rounds, finished ahead 7 times
- Eunho Hwang (황은호) — met in 17 rounds, never finished ahead
- Yunsung Nam — met in 17 rounds, never finished ahead
Next targets
- A sub-4 Pyraminx single — 10,050 people have one; it is 0.06 away.
- A sub-12 3×3 single — 40,277 people have one; it is 2.01 away.
Targets move as he improves.