People · Republic of Korea
Jaehyun Park (박재현)
2×2 · top 8.3% of 186,767 all-time · competing since October 2017 · 2017PARK22
Jaehyun Park (박재현) has been competing for 9 years. His best event is the 2×2: a personal-best single of 2.44, set at Korea Open 2025, puts him in the top 8.3% of the 186,767 people who have ever been ranked in the event, and 240th in Republic of Korea. Until February 2008, no official 2×2 solve in the world had been that fast. Across 9 competitions since October 2017, he has put 107 official solves on the record across five events. Solve to solve, his 3×3 times vary about 13% around a typical one, an early reading from 8 counted rounds. His 3×3 best has come down from 18.26 in October 2017 to 12.47, a 32% improvement. Jaehyun has entered nine competitions, more competitions than 91% 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 | |
|---|---|---|---|---|---|
| 2×2 | 2.44 | 4.04 | top 8.3% | 240 / 2,319 | |
| 3×3 | 12.47 | 16.08 | top 15.5% | 867 / 4,352 | |
| 4×4 | 1:01.61 | 1:05.32 | top 38.2% | 657 / 1,308 | |
| 3×3 one-handed | 37.46 | 48.87 | top 61.5% | 702 / 966 | |
| Pyraminx | 13.17 | 18.93 | top 73.8% | 1,005 / 1,271 |
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
- 14 Dec 2024Three personal bests in one day at Seoul Winter 2024.
- 19 Jan 2019First sub-15 3×3: 14.39 at Korea Winter 2019.
- 28 Oct 2017First competition: CWR Fall 2017. A 18.26 3×3 single to start from.
Competitions
- Korea Open 2025 · 15 Aug 2025 — 1 personal best set
- Seoul Winter 2024 · 14 Dec 2024 — 3 personal bests set
- Daegu Autumn 2024 · 26 Oct 2024 — 1 personal best set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 1 personal best set
- Seoul Winter 2019 · 23 Feb 2019 — 1 personal best set
- Korea Winter 2019 · 19 Jan 2019 — 1 personal best set
- Korean Championship 2018 · 20 Jul 2018
- Cubedu Korea 2018 · 26 Jan 2018 — 1 personal best set
- CWR Fall 2017 · 28 Oct 2017
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 21 rounds, finished ahead 3 times
- Ko Youngjin (고영진) — met in 21 rounds, finished ahead once
- DongSoo Park (박동수) — met in 21 rounds, never finished ahead
Next targets
- A sub-2 2×2 single — 8,848 people have one; it is 0.44 away.
- A sub-12 3×3 single — 39,535 people have one; it is 0.47 away.
Targets move as he improves.