People · China
Cheng Xu (徐成)
Pyraminx · top 3.7% of 129,321 all-time · competing since April 2018 · 2018XUCH03
Cheng Xu (徐成) has been competing for 8 years. His best event is the Pyraminx: a personal-best single of 3.01, set at Kunshan Open 2019, puts him in the top 3.7% of the 129,321 people who have ever been ranked in the event, and 441st in China. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 12 competitions since April 2018, he has put 255 official solves on the record across four events. Solve to solve, his 3×3 times vary about 16% around a typical one; 90% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. That figure sets aside his 5 DNFs. His 2×2 best has come down from 7.72 in April 2018 to 2.00, a 74% improvement. Cheng has entered twelve competitions, more competitions than 94% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| Pyraminx | 3.01 | 5.52 | top 3.7% | 441 / 10,224 | |
| 2×2 | 2.00 | 3.00 | top 4.7% | 656 / 15,796 | |
| 3×3 | 16.71 | 19.96 | top 30.1% | 11,031 / 28,153 | |
| Skewb | 7.73 | 9.73 | top 39.3% | 2,338 / 5,004 |
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, 2×2. Faster is higher — the axis is the right way up.
The story so far
- 20 Apr 2019Four personal bests in one day at Kunshan Open 2019.
- 5 Aug 2018First sub-20 3×3: 19.05 at Suzhou Open 2018.
- 6 May 2018Four personal bests in one day at You May Open 2018.
- 30 Apr 2018First competition: Nanjing Spring 2018. A 26.04 3×3 single to start from.
Competitions
- Wuxi Winter 2019 · 8 Dec 2019
- Nanjing Autumn 2019 · 3 Nov 2019
- Suzhou Open 2019 · 4 Aug 2019 — 2 personal bests set
- Wuhu Open 2019 · 27 Apr 2019 — 1 personal best set
- Kunshan Open 2019 · 20 Apr 2019 — 4 personal bests set
- Yancheng Spring 2019 · 6 Apr 2019 — 2 personal bests set
- Wuhu Open 2018 · 24 Nov 2018 — 1 personal best set
- Hangzhou Open 2018 · 10 Nov 2018 — 2 personal bests set
- Ningbo Open 2018 · 13 Oct 2018 — 1 personal best set
- Suzhou Open 2018 · 5 Aug 2018 — 2 personal bests set
- You May Open 2018 · 6 May 2018 — 4 personal bests set
- Nanjing Spring 2018 · 30 Apr 2018
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.
- Zheyu Zhang (张哲宇) — met in 21 rounds, finished ahead 11 times
- Chengyu Ye (叶成宇) — met in 21 rounds, finished ahead 5 times
- Shifei Dai (代时飞) — met in 19 rounds, finished ahead 4 times
Next targets
- A sub-3 Pyraminx single — 4,700 people have one; it is 0.01 away.
- A sub-1 2×2 single — 1,032 people have one; it is 1.00 away.
Targets move as he improves.