People · Republic of Korea
Yeohun Chwa (좌여훈)
2×2 · top 0.79% of 186,767 all-time · competing since October 2022 · 2022CHWA01
Yeohun Chwa (좌여훈) has been competing for 4 years. His best event is the 2×2: a personal-best single of 1.11, set at Seoul Winter 2024, puts him in the top 0.79% of the 186,767 people who have ever been ranked in the event, and 18th in Republic of Korea. Until November 2008, no official 2×2 solve in the world had been that fast. Across 17 competitions since October 2022, he has put 467 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 17% around a typical one; 97% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 2×2 best has come down from 4.70 in October 2022 to 1.11, a 76% improvement. Yeohun has entered 17 competitions, more competitions than 96% 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 | 1.11 | 2.05 | top 0.79% | 18 / 2,319 | |
| 3×3 | 6.93 | 8.73 | top 1.3% | 74 / 4,352 | |
| Pyraminx | 2.30 | 4.07 | top 1.7% | 36 / 1,271 | |
| 4×4 | 32.50 | 39.36 | top 4.6% | 94 / 1,308 | |
| 3×3 one-handed | 13.84 | 15.59 | top 5.8% | 81 / 966 | |
| Clock | 6.66 | 8.09 | top 9.7% | 67 / 536 | |
| Skewb | 4.17 | 6.00 | top 12.1% | 123 / 854 | |
| Megaminx | 1:09.63 | 1:31.15 | top 15.4% | 105 / 524 | |
| 5×5 | 1:18.04 | 1:32.08 | top 17.6% | 177 / 716 | |
| Square-1 | 28.58 | 30.04 | top 46.7% | 208 / 371 |
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, 2×2. Faster is higher — the axis is the right way up.
The story so far
- 15 Aug 2024Seven personal bests in one day at Korean Championship 2024.
- 3 Feb 2024First sub-10 3×3: 9.19 at Daegu Cold Winter 2024.
- 15 Dec 2023Three personal bests in one day at Korean Championship 2023.
- 15 Apr 2023First sub-15 3×3: 10.39 at Daegu Hot Spring 2023.
- 29 Oct 2022First competition: Cubing SimCheong Open 2022. A 19.17 3×3 single to start from.
Competitions
- Seoul Winter 2026 · 17 Jan 2026 — 1 personal best set
- Korean Championship 2025 · 27 Dec 2025
- Korea Open 2025 · 15 Aug 2025 — 2 personal bests set
- Suwon Summer 2025 · 13 Jul 2025 — 1 personal best set
- Please Minx Korea 2025 · 5 Apr 2025 — 1 personal best set
- Seoul Winter 2024 · 14 Dec 2024 — 2 personal bests set
- Brown Fall Seongnam 2024 · 21 Sep 2024
- Korean Championship 2024 · 15 Aug 2024 — 7 personal bests set
- Prime Cubing Day Seoul 2024 · 15 Jun 2024 — 1 personal best set
- Anyang Haseyo 2024 · 9 Mar 2024 — 1 personal best set
- Daegu Cold Winter 2024 · 3 Feb 2024 — 2 personal bests set
- Korean Championship 2023 · 15 Dec 2023 — 3 personal bests set
- Ansan Autumn 2023 · 24 Sep 2023 — 1 personal best set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 1 personal best set
- Seoul Spring 2023 · 7 May 2023 — 1 personal best set
- Daegu Hot Spring 2023 · 15 Apr 2023 — 2 personal bests set
- Cubing SimCheong Open 2022 · 29 Oct 2022 — 1 personal best set
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.
- Minseo Gu (구민서) — met in 86 rounds, finished ahead 30 times
- DongSoo Park (박동수) — met in 86 rounds, finished ahead 12 times
- Seung Hyuk Nahm (남승혁) — met in 77 rounds, finished ahead 6 times
Next targets
- A sub-1 2×2 single — 1,032 people have one; it is 0.11 away.
- A sub-6 3×3 single — 1,376 people have one; it is 0.93 away.
Targets move as he improves.