People · Republic of Korea
Changhee Yeh (예창희)
Megaminx · top 0.21% of 34,786 all-time · competing since July 2019 · 2019YEHC02
Changhee Yeh (예창희) has been competing for 7 years. His best event is the Megaminx: a personal-best single of 29.93, set at Korean Championship 2025, puts him in the top 0.21% of the 34,786 people who have ever been ranked in the event, and 3rd in Republic of Korea. Until June 2017, no official Megaminx solve in the world had been that fast. Across 9 competitions since July 2019, he has put 101 official solves on the record across five events. His Megaminx best has come down from 47.21 in August 2019 to 29.93, a 37% improvement. Changhee 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 | |
|---|---|---|---|---|---|
| Megaminx | 29.93 | 32.91 | top 0.21% | 3 / 524 | |
| 3×3 | 10.33 | 12.48 | top 8.4% | 482 / 4,352 | |
| 3×3 one-handed | 23.02 | 26.55 | top 28.8% | 381 / 966 | |
| 5×5 | 3:07.94 | 3:26.43 | top 80.5% | 609 / 716 | |
| 3×3 blindfolded | 6:42.69 | — | early days — 1 solve | 204 / 217 |
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, Megaminx. Faster is higher — the axis is the right way up.
The story so far
- 12 Aug 2023Three personal bests in one day at Rubik's WCA World Championship 2023.
- 20 Jul 2019First competition: Cube Camp in Wonju 2019. A 14.44 3×3 single to start from.
Competitions
- Korea Open 2026 · 15 Aug 2026
- Korean Championship 2025 · 27 Dec 2025 — 1 personal best set
- Please Minx Korea 2025 · 5 Apr 2025 — 1 personal best set
- Daegu Autumn 2024 · 26 Oct 2024
- Korean Championship 2024 · 15 Aug 2024 — 2 personal bests set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 3 personal bests set
- Daegu Autumn Open 2019 · 13 Oct 2019
- Korean Championship 2019 · 16 Aug 2019
- Cube Camp in Wonju 2019 · 20 Jul 2019
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.
- DongSoo Park (박동수) — met in 21 rounds, finished ahead 9 times
- Seung Hyuk Nahm (남승혁) — met in 19 rounds, finished ahead 12 times
- Jerry Hwang (황동욱) — met in 15 rounds, finished ahead 13 times
Next targets
- A sub-25 Megaminx single — 8 people have one; it is 4.93 away.
- A sub-10 3×3 single — 21,172 people have one; it is 0.33 away.
Targets move as he improves.