People · Republic of Korea
HaJin Kim (김하진)
3×3 · top 8.4% of 284,439 all-time · competing since February 2020 · 2020KIMH02
HaJin Kim (김하진) has been competing for 7 years. His best event is the 3×3: a personal-best single of 10.33, set at Rubik's WCA World Championship 2023, puts him in the top 8.4% of the 284,439 people who have ever been ranked in the event, and 482nd in Republic of Korea. Until May 2007, no official 3×3 solve in the world had been that fast. Across 6 competitions since February 2020, he has put 94 official solves on the record across six events. Solve to solve, his 3×3 times vary about 18% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 25.58 in February 2020 to 10.33, a 60% improvement. HaJin has entered six competitions, more competitions than 86% 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 | 10.33 | 12.47 | top 8.4% | 482 / 4,352 | |
| 2×2 | 2.66 | 4.72 | top 10.5% | 310 / 2,319 | |
| 4×4 | 41.53 | 49.68 | top 13.9% | 265 / 1,308 | |
| Pyraminx | 7.16 | 9.03 | top 29.2% | 438 / 1,271 | |
| Skewb | 8.14 | 10.29 | top 42.4% | 422 / 854 | |
| 3×3 one-handed | 43.08 | 46.44 | top 69.4% | 769 / 966 |
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 2022First sub-15 3×3: 13.98 at Korean Championship 2022.
- 23 Jul 2022First sub-20 3×3: 17.27 at Seoul Summer 2022.
- 23 Jul 2022Three personal bests in one day at Seoul Summer 2022.
- 1 Feb 2020First competition: ByeolLae Open 2020. A 25.58 3×3 single to start from.
Competitions
- Seoul Open 2024 · 6 Jan 2024
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 2 personal bests set
- Seoul Spring 2023 · 7 May 2023 — 1 personal best set
- Korean Championship 2022 · 12 Aug 2022 — 1 personal best set
- Seoul Summer 2022 · 23 Jul 2022 — 3 personal bests set
- ByeolLae Open 2020 · 1 Feb 2020
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.
- Jang SeokWon (장석원) — met in 19 rounds, finished ahead 10 times
- Jonathan Kim (김요나단) — met in 19 rounds, finished ahead 10 times
- DaYeong Kim (김다영) — met in 19 rounds, finished ahead 9 times
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 0.33 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.66 away.
Targets move as he improves.