People · Republic of Korea
JaeIn Choi (최재인)
Clock · top 6.4% of 32,048 all-time · competing since April 2024 · 2024CHOI09
JaeIn Choi (최재인) has been competing for 2 years. His best event is the Clock: a personal-best single of 5.73, set at Anyang Haseyo 2025, puts him in the top 6.4% of the 32,048 people who have ever been ranked in the event, and 41st in Republic of Korea. Until December 2011, no official Clock solve in the world had been that fast. Across 7 competitions since April 2024, he has put 64 official solves on the record across three events. Solve to solve, his 3×3 times vary about 18% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 30.77 in April 2024 to 19.60, a 36% improvement. JaeIn 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 | |
|---|---|---|---|---|---|
| Clock | 5.73 | 7.49 | top 6.4% | 41 / 536 | |
| 3×3 | 19.60 | 22.72 | top 38.8% | 2,024 / 4,352 | |
| 2×2 | 6.05 | 8.49 | top 51.4% | 1,452 / 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
- 20 Jul 2024First sub-20 3×3: 19.78 at Ansan Summer 2024.
- 15 Jun 2024First sub-30 3×3: 25.84 at Prime Cubing Day Seoul 2024.
- 6 Apr 2024First competition: Busan Spring 2024. A 30.77 3×3 single to start from.
Competitions
- Korea Open 2025 · 15 Aug 2025
- Anyang Haseyo 2025 · 8 Feb 2025 — 1 personal best set
- Brown Fall Seongnam 2024 · 21 Sep 2024 — 2 personal bests set
- Korean Championship 2024 · 15 Aug 2024 — 1 personal best set
- Ansan Summer 2024 · 20 Jul 2024 — 1 personal best set
- Prime Cubing Day Seoul 2024 · 15 Jun 2024 — 1 personal best set
- Busan Spring 2024 · 6 Apr 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.
- Choi Goho (최고호) — met in 13 rounds, finished ahead 4 times
- Geunyeong Lee (이근영) — met in 13 rounds, finished ahead 4 times
- Haram Jang (장하람) — met in 12 rounds, finished ahead 5 times
Next targets
- A sub-5 Clock single — 1,421 people have one; it is 0.73 away.
- A sub-15 3×3 single — 69,493 people have one; it is 4.60 away.
Targets move as he improves.