People · Republic of Korea
Cho Jeyeon (조제연)
3×3 · top 8.5% of 284,439 all-time · competing since February 2024 · 2024JEYE01
Cho Jeyeon (조제연) has been competing for 3 years. His best event is the 3×3: a personal-best single of 10.35, set at Korea Open 2025, puts him in the top 8.5% of the 284,439 people who have ever been ranked in the event, and 487th in Republic of Korea. Until May 2007, no official 3×3 solve in the world had been that fast. Across 4 competitions since February 2024, he has put 67 official solves on the record across five events. Solve to solve, his 3×3 times vary about 17% around a typical one, an early reading from 6 counted rounds. His 3×3 best has come down from 17.34 in February 2024 to 10.35, a 40% improvement. Cho 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 | 10.35 | 11.62 | top 8.5% | 487 / 4,352 | |
| 4×4 | 41.96 | 45.62 | top 14.5% | 276 / 1,308 | |
| 3×3 one-handed | 18.75 | 24.64 | top 17.1% | 244 / 966 | |
| 5×5 | 1:23.27 | 1:33.75 | top 21.8% | 203 / 716 | |
| 6×6 | 2:44.38 | 2:49.29 | top 33.2% | 148 / 329 |
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 2025First sub-15 3×3: 10.35 at Korea Open 2025.
- 15 Aug 2025Three personal bests in one day at Korea Open 2025.
- 3 Feb 2024First competition: Daegu Cold Winter 2024. A 17.34 3×3 single to start from.
Competitions
- Seoul Summer 2026 · 19 Jul 2026 — 1 personal best set
- Korea Open 2025 · 15 Aug 2025 — 3 personal bests set
- Busan Spring 2024 · 6 Apr 2024 — 1 personal best set
- Daegu Cold Winter 2024 · 3 Feb 2024
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 15 rounds, never finished ahead
- Jerry Hwang (황동욱) — met in 15 rounds, never finished ahead
- Geunyeong Lee (이근영) — met in 15 rounds, never finished ahead
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 0.35 away.
- A sub-40 4×4 single — 10,180 people have one; it is 1.96 away.
Targets move as he improves.