People · Republic of Korea
U-Chang Cheon (천우창)
2×2 · top 22.2% of 186,767 all-time · competing since May 2015 · 2015CHEO02
U-Chang Cheon (천우창) has been competing for 11 years. His best event is the 2×2: a personal-best single of 3.66, set at Cube Is Good 2016, puts him in the top 22.2% of the 186,767 people who have ever been ranked in the event, and 660th in Republic of Korea. Across 9 competitions since May 2015, he has put 129 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 18.73 in May 2015 to 15.14, a 19% improvement. He 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 | |
|---|---|---|---|---|---|
| 2×2 | 3.66 | 4.81 | top 22.2% | 660 / 2,319 | |
| 3×3 | 15.14 | 17.09 | top 24.9% | 1,345 / 4,352 | |
| Skewb | 6.51 | 9.19 | top 29.8% | 302 / 854 | |
| 3×3 one-handed | 25.06 | 27.95 | top 34.4% | 437 / 966 | |
| Pyraminx | 8.65 | 17.32 | top 41.8% | 619 / 1,271 | |
| Clock | 13.92 | — | top 43.5% | 297 / 536 | |
| 4×4 | 1:07.86 | 1:15.74 | top 44.8% | 743 / 1,308 |
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
- 30 May 2015First competition: Good Cube Show Korea 2015. A 18.73 3×3 single to start from.
Competitions
- Korean Championship 2017 · 28 Jul 2017 — 1 personal best set
- Play Cube 2017 · 28 May 2017 — 1 personal best set
- Korean Spring Picnic 2017 · 6 May 2017
- 3x3x3 HanMaDang 2017 · 18 Feb 2017 — 2 personal bests set
- Korean Championship 2016 · 12 Aug 2016 — 1 personal best set
- Cube Is Good 2016 · 22 May 2016 — 2 personal bests set
- Korea Winter 2015 · 19 Dec 2015 — 1 personal best set
- Korean KAIST Style 2015 · 9 Oct 2015 — 1 personal best set
- Good Cube Show Korea 2015 · 30 May 2015
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 27 rounds, finished ahead once
- Habin Kim (김하빈) — met in 27 rounds, never finished ahead
- Lee Jung Min — met in 24 rounds, finished ahead 21 times
Next targets
- A sub-3 2×2 single — 26,570 people have one; it is 0.66 away.
- A sub-15 3×3 single — 69,493 people have one; it is 0.14 away.
Targets move as he improves.