People · China
Jiacheng Chen (陈佳丞)
Pyraminx · top 8.1% of 130,891 all-time · competing since April 2012 · 2012CHEN11
Jiacheng Chen (陈佳丞) has been competing for 15 years. His best event is the Pyraminx: a personal-best single of 4.08, set at Shanghai Winter 2018, puts him in the top 8.1% of the 130,891 people who have ever been ranked in the event, and 978th in China. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 15 competitions since April 2012, he has put 327 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 67% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 19.58 in April 2012 to 11.28, a 42% improvement. Jiacheng 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 | China | |
|---|---|---|---|---|---|
| Pyraminx | 4.08 | 5.92 | top 8.1% | 978 / 10,269 | |
| 3×3 | 11.28 | 13.38 | top 11.4% | 4,569 / 28,499 | |
| 2×2 | 2.92 | 4.59 | top 13.4% | 2,118 / 15,939 | |
| 4×4 | 44.37 | 50.70 | top 17.6% | 1,932 / 5,999 | |
| 3×3 one-handed | 21.72 | 24.14 | top 25.3% | 2,531 / 5,994 | |
| Skewb | 6.32 | 7.89 | top 28.4% | 1,764 / 5,030 | |
| 5×5 | 1:37.39 | 1:44.29 | top 33.4% | 1,542 / 2,857 | |
| Clock | 15.12 | 18.87 | top 48.4% | 1,170 / 1,887 | |
| Megaminx | 2:09.29 | — | top 51.0% | 1,337 / 1,693 | |
| 3×3 Fewest Moves | 42 moves | — | early days — 2 solves | 666 / 1,071 | |
| 6×6 | 3:58.41 | — | early days — 1 solve | 1,150 / 1,363 | |
| 7×7 | 6:46.21 | 6:52.18 | top 77.6% | 1,174 / 1,274 |
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
- 20 Jan 2018Three personal bests in one day at Shanghai Winter 2018.
- 20 May 2017Seven personal bests in one day at Shanghai Love In ECNU 2017.
- 14 May 2016Three personal bests in one day at Shanghai Songjiang Open 2016.
- 6 Dec 2014Three personal bests in one day at Cube Elite Union Cafe 2014.
- 12 Jul 2014First sub-15 3×3: 14.43 at Suzhou Open 2014.
- 12 Jul 2014Five personal bests in one day at Suzhou Open 2014.
Competitions
- Shanghai Open 2019 · 19 Oct 2019
- Suzhou Open 2019 · 4 Aug 2019
- FMC Asia 2018 · 8 Dec 2018
- Hangzhou Open 2018 · 10 Nov 2018
- Shanghai Winter 2018 · 20 Jan 2018 — 3 personal bests set
- Shanghai Love In ECNU 2017 · 20 May 2017 — 7 personal bests set
- Shanghai Spring 2017 · 18 Mar 2017 — 2 personal bests set
- Asian Championship 2016 · 1 Oct 2016 — 1 personal best set
- Shanghai Songjiang Open 2016 · 14 May 2016 — 3 personal bests set
- Shanghai Fudan Spring 2015 · 25 Apr 2015 — 2 personal bests set
- Cube Elite Union Cafe 2014 · 6 Dec 2014 — 3 personal bests set
- Suzhou Open 2014 · 12 Jul 2014 — 5 personal bests set
- Shanghai Summer 2013 · 3 Aug 2013 — 1 personal best set
- Shanghai Summer 2012 · 21 Jul 2012 — 5 personal bests set
- Shanghai Donghua 2012 · 7 Apr 2012
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.
- Yinghao Wang (王鹰豪) — met in 61 rounds, finished ahead twice
- Jiajun Li (李嘉俊) — met in 41 rounds, finished ahead 7 times
- Jiayu Wang (王佳宇) — met in 41 rounds, finished ahead twice
Next targets
- A sub-4 Pyraminx single — 10,050 people have one; it is 0.08 away.
- A sub-10 3×3 single — 21,606 people have one; it is 1.28 away.
Targets move as he improves.