People · China
Yicheng Duan (段易成)
Pyraminx · top 8.9% of 129,321 all-time · competing since April 2016 · 2016DUAN01
Yicheng Duan (段易成) has been competing for 10 years. His best event is the Pyraminx: a personal-best single of 4.24, set at Tianjin Summer Open 2018, puts him in the top 8.9% of the 129,321 people who have ever been ranked in the event, and 1,063rd in China. Until September 2006, no official Pyraminx solve in the world had been that fast. Across 21 competitions since April 2016, he has put 452 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 6 counted rounds. His 5×5 best has come down from 2:17.88 in April 2016 to 1:21.06, a 41% improvement. Yicheng has entered 21 competitions, more competitions than 97% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| Pyraminx | 4.24 | 7.18 | top 8.9% | 1,063 / 10,224 | |
| 5×5 | 1:21.06 | 1:27.59 | top 20.0% | 947 / 2,816 | |
| Skewb | 5.47 | 8.79 | top 21.7% | 1,361 / 5,004 | |
| Megaminx | 1:21.36 | 1:37.42 | top 22.7% | 687 / 1,678 | |
| 7×7 | 3:42.19 | 3:50.44 | top 24.3% | 483 / 1,261 | |
| 2×2 | 3.87 | 5.37 | top 24.8% | 4,171 / 15,796 | |
| 6×6 | 2:40.50 | 2:45.97 | top 31.0% | 659 / 1,349 | |
| Square-1 | 24.50 | 39.75 | top 38.1% | 647 / 1,362 | |
| 3×3 | 19.62 | 22.23 | top 38.9% | 13,458 / 28,153 | |
| 4×4 | 1:04.56 | 1:17.21 | top 41.3% | 3,959 / 5,926 | |
| 3×3 one-handed | 31.35 | 42.31 | top 49.7% | 4,315 / 5,922 |
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, 5×5. Faster is higher — the axis is the right way up.
The story so far
- 7 Dec 2019First sub-20 3×3: 19.62 at Beijing Winter 2019.
- 7 Dec 2019Three personal bests in one day at Beijing Winter 2019.
- 27 Oct 2018Three personal bests in one day at Xi'an Open 2018.
- 3 Feb 2018Four personal bests in one day at Inner Mongolia Winter 2018.
- 28 May 2016Three personal bests in one day at One Night in Beijing 2016.
- 23 Apr 2016First competition: Shenyang Open 2016. A 21.23 3×3 single to start from.
Competitions
- Shaoxing Open 2019 · 21 Dec 2019 — 1 personal best set
- Beijing Winter 2019 · 7 Dec 2019 — 3 personal bests set
- Lanzhou Spring 2019 · 11 May 2019 — 1 personal best set
- Weihai Open 2019 · 6 Apr 2019 — 1 personal best set
- GDSY Open 2019 · 23 Mar 2019 — 1 personal best set
- Inner Mongolia Winter 2019 · 26 Jan 2019 — 1 personal best set
- Xi'an Open 2018 · 27 Oct 2018 — 3 personal bests set
- China Championship 2018 · 2 Oct 2018 — 1 personal best set
- Tianjin Summer Open 2018 · 24 Jun 2018 — 2 personal bests set
- Tangshan Open 2018 · 17 Jun 2018 — 1 personal best set
- Inner Mongolia Winter 2018 · 3 Feb 2018 — 4 personal bests set
- Shanghai Winter 2018 · 20 Jan 2018 — 1 personal best set
- Nanchang Open 2017 · 11 Nov 2017 — 2 personal bests set
- Beijing Ten Years Open 2017 · 17 Sep 2017
- China Championship 2017 · 28 Jul 2017
- Xi'an Cherry Blossom 2017 · 2 Apr 2017 — 2 personal bests set
- Qingdao Prime Numbers 2017 · 26 Mar 2017 — 2 personal bests set
- Suzhou Open 2016 · 2 Jul 2016 — 2 personal bests set
- One Night in Beijing 2016 · 28 May 2016 — 3 personal bests set
- Tangshan Open 2016 · 8 May 2016 — 1 personal best set
- Shenyang Open 2016 · 23 Apr 2016 — 2 personal bests 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.
- Sheng Cao (曹晟) — met in 55 rounds, finished ahead twice
- Baiqiang Dong (董百强) — met in 44 rounds, finished ahead 17 times
- Yunqi Ouyang (欧阳韵奇) — met in 40 rounds, finished ahead twice
Next targets
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.24 away.
- A sub-1:00 5×5 single — 2,252 people have one; it is 21.06 away.
Targets move as he improves.