People · Republic of Korea
Juwhan Jung (정주환)
Megaminx · top 0.68% of 34,786 all-time · competing since July 2017 · 2017WHAN01
Juwhan Jung (정주환) has been competing for 9 years. His best event is the Megaminx: a personal-best single of 35.21, set at We Laugh Pohanghang 2025, puts him in the top 0.68% of the 34,786 people who have ever been ranked in the event, and 7th in Republic of Korea. Until August 2016, no official Megaminx solve in the world had been that fast. Across 14 competitions since July 2017, he has put 458 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 84% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 12.79 in July 2017 to 8.53, a 33% improvement. Juwhan has entered 14 competitions, more competitions than 95% 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 | 35.21 | 42.61 | top 0.68% | 7 / 524 | |
| 4×4 | 29.43 | 40.35 | top 2.5% | 56 / 1,308 | |
| 3×3 | 8.53 | 10.24 | top 3.8% | 227 / 4,352 | |
| 5×5 | 1:02.56 | 1:10.35 | top 6.9% | 75 / 716 | |
| Skewb | 3.52 | 4.55 | top 7.9% | 81 / 854 | |
| 2×2 | 2.47 | 3.85 | top 8.6% | 246 / 2,319 | |
| 3×3 one-handed | 15.52 | 20.78 | top 9.2% | 131 / 966 | |
| 6×6 | 2:01.46 | 2:11.92 | top 11.6% | 59 / 329 | |
| 7×7 | 3:06.31 | 3:23.05 | top 12.2% | 44 / 254 | |
| Clock | 8.06 | 10.90 | top 15.5% | 108 / 536 | |
| Pyraminx | 5.41 | 7.13 | top 15.8% | 246 / 1,271 | |
| Square-1 | 16.79 | 23.70 | top 20.5% | 84 / 371 | |
| 3×3 blindfolded | 1:50.24 | — | top 30.1% | 78 / 217 | |
| 3×3 Fewest Moves | 44 moves | — | early days — 1 solve | 126 / 173 |
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
- 15 Aug 2025Seven personal bests in one day at Vietnam Championship 2025.
- 8 Feb 2025Three personal bests in one day at Anyang Haseyo 2025.
- 12 Aug 2023Three personal bests in one day at Rubik's WCA World Championship 2023.
- 12 Aug 2022Six personal bests in one day at Korean Championship 2022.
- 23 Jul 2022First sub-10 3×3: 9.32 at Seoul Summer 2022.
- 23 Jul 2022Six personal bests in one day at Seoul Summer 2022.
Competitions
- King of Prussia Summer 2026 · 25 Jul 2026
- We Laugh Pohanghang 2025 · 14 Sep 2025 — 2 personal bests set
- Vietnam Championship 2025 · 15 Aug 2025 — 7 personal bests set
- Suwon Summer 2025 · 13 Jul 2025 — 1 personal best set
- Osan Summer 2025 · 29 Jun 2025 — 1 personal best set
- Please Minx Korea 2025 · 5 Apr 2025
- Anyang Haseyo 2025 · 8 Feb 2025 — 3 personal bests set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 3 personal bests set
- Daegu Hot Autumn 2022 · 17 Sep 2022 — 2 personal bests set
- Korean Championship 2022 · 12 Aug 2022 — 6 personal bests set
- Seoul Summer 2022 · 23 Jul 2022 — 6 personal bests set
- Cube Camp in Wonju 2019 · 20 Jul 2019 — 1 personal best set
- Cubing Operating System Summer 2019 · 8 Jun 2019 — 1 personal best set
- Korean Championship 2017 · 28 Jul 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.
- Minseo Gu (구민서) — met in 78 rounds, finished ahead 22 times
- Choi Goho (최고호) — met in 67 rounds, finished ahead 52 times
- Ko Youngjin (고영진) — met in 67 rounds, finished ahead 45 times
Next targets
- A sub-30 Megaminx single — 75 people have one; it is 5.21 away.
- A sub-25 4×4 single — 588 people have one; it is 4.43 away.
Targets move as he improves.