People · Republic of Korea
GyeHyun Cho (조계현)
Pyraminx · top 19.9% of 129,321 all-time · competing since August 2016 · 2016JOGY01
GyeHyun Cho (조계현) has been competing for 10 years. His best event is the Pyraminx: a personal-best single of 5.99, set at Korean Championship 2017, puts him in the top 19.9% of the 129,321 people who have ever been ranked in the event, and 318th in Republic of Korea. Across 15 competitions since August 2016, he has put 227 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 14% around a typical one; 75% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 29.39 in August 2016 to 18.81, a 36% improvement. GyeHyun has entered 15 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 | |
|---|---|---|---|---|---|
| Pyraminx | 5.99 | 9.00 | top 19.9% | 318 / 1,271 | |
| 3×3 | 18.81 | 22.95 | top 36.5% | 1,911 / 4,352 | |
| 2×2 | 4.97 | 7.10 | top 39.0% | 1,138 / 2,319 | |
| 4×4 | 1:17.76 | 1:24.92 | top 54.0% | 886 / 1,308 | |
| 3×3 one-handed | 39.43 | 42.68 | top 64.5% | 730 / 966 | |
| Skewb | 12.50 | 17.21 | top 68.5% | 624 / 854 | |
| 5×5 | 2:46.45 | 3:11.08 | top 73.3% | 574 / 716 | |
| 6×6 | 6:32.51 | 7:21.06 | early days — 3 solves | 319 / 329 |
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
- 29 Sep 2018First sub-20 3×3: 18.81 at CWR Fall 2018.
- 28 Jul 2017Four personal bests in one day at Korean Championship 2017.
- 12 Aug 2016First competition: Korean Championship 2016. A 29.39 3×3 single to start from.
Competitions
- Please Minx Korea 2025 · 5 Apr 2025
- Happy Suseong 2025 · 18 Jan 2025
- Rubik's WCA World Championship 2023 · 12 Aug 2023
- Cubing SimCheong Open 2022 · 29 Oct 2022
- Korean Championship 2022 · 12 Aug 2022 — 1 personal best set
- Seoul Winter 2019 · 23 Feb 2019 — 1 personal best set
- CWR Fall 2018 · 29 Sep 2018 — 2 personal bests set
- Korean Championship 2018 · 20 Jul 2018 — 2 personal bests set
- CWR Winter 2018 · 24 Feb 2018 — 1 personal best set
- CWR Fall 2017 · 28 Oct 2017 — 1 personal best set
- Korean Championship 2017 · 28 Jul 2017 — 4 personal bests set
- Korean Spring Picnic 2017 · 6 May 2017
- KAIST Spring 2017 · 9 Apr 2017 — 1 personal best set
- 3x3x3 HanMaDang 2017 · 18 Feb 2017 — 1 personal best set
- Korean Championship 2016 · 12 Aug 2016
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 44 rounds, finished ahead once
- DongSoo Park (박동수) — met in 43 rounds, never finished ahead
- Ilkyoo Choi (최일규) — met in 42 rounds, finished ahead 10 times
Next targets
- A sub-5 Pyraminx single — 17,019 people have one; it is 0.99 away.
- A sub-15 3×3 single — 69,493 people have one; it is 3.81 away.
Targets move as he improves.