People · Chinese Taipei
Ruei-Jyun Chang (張睿鈞)
Pyraminx · top 1.0% of 130,891 all-time · competing since December 2020 · 2020CHAN15
Ruei-Jyun Chang (張睿鈞) has been competing for 6 years. His best event is the Pyraminx: a personal-best single of 1.93, set at Taiwan Championship 2022, puts him in the top 1.0% of the 130,891 people who have ever been ranked in the event, and 14th in Chinese Taipei. Until July 2011, no official Pyraminx solve in the world had been that fast. Across 15 competitions since December 2020, he has put 663 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 50% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 13.13 in December 2020 to 8.52, a 35% improvement. He 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 | Chinese Taipei | |
|---|---|---|---|---|---|
| Pyraminx | 1.93 | 4.10 | top 1.0% | 14 / 1,017 | |
| 6×6 | 1:26.28 | 1:32.59 | top 1.3% | 10 / 293 | |
| 7×7 | 2:18.11 | 2:20.34 | top 2.1% | 17 / 252 | |
| Skewb | 2.53 | 4.76 | top 3.0% | 28 / 700 | |
| 5×5 | 54.76 | 58.33 | top 3.3% | 53 / 640 | |
| 4×4 | 30.93 | 35.13 | top 3.5% | 92 / 1,079 | |
| 3×3 | 8.52 | 10.10 | top 3.8% | 223 / 4,369 | |
| Clock | 5.12 | 6.40 | top 4.7% | 19 / 370 | |
| Square-1 | 9.63 | 12.51 | top 5.5% | 27 / 323 | |
| 2×2 | 2.33 | 3.71 | top 7.4% | 196 / 1,671 | |
| 3×3 one-handed | 14.70 | 23.38 | top 7.6% | 102 / 805 | |
| 3×3 Fewest Moves | 30 moves | 37.33 | top 14.8% | 28 / 205 | |
| Megaminx | 1:26.62 | 1:30.86 | top 26.1% | 153 / 363 | |
| 3×3 blindfolded | 3:17.27 | — | early days — 1 solve | 90 / 149 |
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
- 8 Dec 2023Five personal bests in one day at Taiwan Championship 2023.
- 16 Dec 2022Eight personal bests in one day at Taiwan Championship 2022.
- 5 Nov 2022Four personal bests in one day at Taoyuan Cubing Open 2022.
- 3 Sep 2022Ten personal bests in one day at Maru Cube Day 2022.
- 23 Jul 2022Five personal bests in one day at Chiayi Open 2022.
- 29 May 2022First sub-10 3×3: 9.51 at CK Cubing Party 2022.
Competitions
- Taiwan Championship 2023 · 8 Dec 2023 — 5 personal bests set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 2 personal bests set
- Taiwan Cubing Challenge 2023 · 18 Jun 2023 — 1 personal best set
- CK Cubing Party 2023 · 27 May 2023 — 1 personal best set
- Taipei FMC All Day 2023 · 23 Apr 2023
- Taiwan Championship 2022 · 16 Dec 2022 — 8 personal bests set
- Taoyuan Cubing Open 2022 · 5 Nov 2022 — 4 personal bests set
- Maru Cube Day 2022 · 3 Sep 2022 — 10 personal bests set
- Chiayi Open 2022 · 23 Jul 2022 — 5 personal bests set
- CK Cubing Party 2022 · 29 May 2022 — 6 personal bests set
- Taipei FMC All Day 2022 · 10 Apr 2022 — 1 personal best set
- Taiwan Open 2022 · 14 Jan 2022 — 6 personal bests set
- Welcome Back Taipei 2021 · 19 Dec 2021 — 1 personal best set
- Maru Cube Day 2021 · 11 Dec 2021 — 5 personal bests set
- Taiwan Championship 2020 · 18 Dec 2020 — 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.
- Cian-Jyun Yang (楊謙君) — met in 152 rounds, finished ahead 8 times
- Chao-Che Chung (鍾肇哲) — met in 143 rounds, finished ahead 37 times
- Yen-Pin Xiao (蕭彥平) — met in 129 rounds, finished ahead 62 times
Next targets
- A sub-1 Pyraminx single — 49 people have one; it is 0.93 away.
- A sub-1:00 6×6 single — 3 people have one; it is 26.28 away.
Targets move as he improves.