People · Republic of Korea
Jaesung Kim (김재성)
3×3 · top 4.7% of 284,439 all-time · competing since September 2022 · 2022JAES01
Jaesung Kim (김재성) has been competing for 4 years. His best event is the 3×3: a personal-best single of 8.93, set at Rubik's WCA World Championship 2023, puts him in the top 4.7% of the 284,439 people who have ever been ranked in the event, and 281st in Republic of Korea. Until May 2008, no official 3×3 solve in the world had been that fast. Across 4 competitions since September 2022, he has put 59 official solves on the record across three events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 12.36 in September 2022 to 8.93, a 28% improvement. Jaesung 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 | 8.93 | 10.23 | top 4.7% | 281 / 4,352 | |
| 2×2 | 2.29 | 3.56 | top 7.0% | 194 / 2,319 | |
| 4×4 | 41.98 | 48.87 | top 14.5% | 278 / 1,308 |
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
- 12 Aug 2023First sub-10 3×3: 9.77 at Rubik's WCA World Championship 2023.
- 12 Aug 2023Three personal bests in one day at Rubik's WCA World Championship 2023.
- 17 Sep 2022First competition: Daegu Hot Autumn 2022. A 12.36 3×3 single to start from.
Competitions
- Happy Suseong 2025 · 18 Jan 2025 — 1 personal best set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 3 personal bests set
- Daegu Hot Spring 2023 · 15 Apr 2023
- Daegu Hot Autumn 2022 · 17 Sep 2022
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 12 rounds, finished ahead 7 times
- Jerry Hwang (황동욱) — met in 12 rounds, finished ahead 3 times
- Minseo Gu (구민서) — met in 12 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.93 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.29 away.
Targets move as he improves.