People · China
Jiachen Xu (徐嘉辰)
Pyraminx · top 0.98% of 129,321 all-time · competing since May 2016 · 2016XUJI02
Jiachen Xu (徐嘉辰) has been competing for 10 years. His best event is the Pyraminx: a personal-best single of 1.90, set at Shijiazhuang Open 2018, puts him in the top 0.98% of the 129,321 people who have ever been ranked in the event, and 108th in China. Until April 2012, no official Pyraminx solve in the world had been that fast. Across 14 competitions since May 2016, he has put 473 official solves on the record across five events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 81% of the 35,811 competitors with ten or more counted rounds. His Pyraminx best has come down from 6.36 in May 2016 to 1.90, a 70% improvement. Jiachen 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 | China | |
|---|---|---|---|---|---|
| Pyraminx | 1.90 | 2.32 | top 0.98% | 108 / 10,224 | |
| Skewb | 1.88 | 3.23 | top 1.1% | 45 / 5,004 | |
| 3×3 | 8.71 | 11.83 | top 4.2% | 1,599 / 28,153 | |
| 2×2 | 2.75 | 3.60 | top 11.5% | 1,764 / 15,796 | |
| Clock | 8.40 | 10.43 | top 17.1% | 376 / 1,843 |
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, Pyraminx. Faster is higher — the axis is the right way up.
The story so far
- 10 Jun 2018First sub-10 3×3: 8.71 at Shijiazhuang Open 2018.
- 10 Jun 2018Three personal bests in one day at Shijiazhuang Open 2018.
- 25 Mar 2018Three personal bests in one day at Qingdao Open 2018.
- 26 Nov 2017Five personal bests in one day at Shijiazhuang Open 2017.
- 28 Jul 2017First sub-15 3×3: 14.52 at China Championship 2017.
- 18 Mar 2017Three personal bests in one day at Shanghai Spring 2017.
Competitions
- China Championship 2018 · 2 Oct 2018
- Beijing Summer 2018 · 29 Jul 2018
- Tianjin Summer Open 2018 · 24 Jun 2018
- Shijiazhuang Open 2018 · 10 Jun 2018 — 3 personal bests set
- Beijing Open 2018 · 30 Apr 2018 — 2 personal bests set
- Qingdao Open 2018 · 25 Mar 2018 — 3 personal bests set
- Shijiazhuang Open 2017 · 26 Nov 2017 — 5 personal bests set
- China Championship 2017 · 28 Jul 2017 — 2 personal bests set
- Tangshan Open 2017 · 28 May 2017 — 2 personal bests set
- Shanghai Spring 2017 · 18 Mar 2017 — 3 personal bests set
- Anhui University Smart Open 2017 · 11 Mar 2017 — 2 personal bests set
- Tianjin Open 2016 · 12 Nov 2016 — 2 personal bests set
- Asian Championship 2016 · 1 Oct 2016 — 2 personal bests set
- One Night in Beijing 2016 · 28 May 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.
- Zongyang Li (李宗阳) — met in 59 rounds, finished ahead 25 times
- Sheng Cao (曹晟) — met in 51 rounds, finished ahead 24 times
- Yunke Zhang (张云柯) — met in 48 rounds, finished ahead 25 times
Next targets
- A sub-1 Pyraminx single — 49 people have one; it is 0.90 away.
- A sub-1 Skewb single — 35 people have one; it is 0.88 away.
Targets move as he improves.