People · China
Jiangshan Zha (查江山)
Pyraminx · top 5.1% of 129,321 all-time · competing since November 2017 · 2017ZHAJ12
Jiangshan Zha (查江山) has been competing for 9 years. His best event is the Pyraminx: a personal-best single of 3.41, set at Zibo Open 2017, puts him in the top 5.1% of the 129,321 people who have ever been ranked in the event, and 611th in China. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 12 competitions since November 2017, he has put 270 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 74% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 20.00 in November 2017 to 12.58, a 37% improvement. Jiangshan 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 | 3.41 | 6.67 | top 5.1% | 611 / 10,224 | |
| 7×7 | 2:48.27 | 2:52.97 | top 7.4% | 153 / 1,261 | |
| 4×4 | 40.43 | 43.47 | top 12.6% | 1,359 / 5,926 | |
| 3×3 | 12.58 | 14.73 | top 15.9% | 6,253 / 28,153 | |
| 5×5 | 1:19.98 | 1:31.49 | top 19.1% | 915 / 2,816 | |
| 3×3 one-handed | 20.20 | 25.87 | top 21.0% | 2,089 / 5,922 | |
| Megaminx | 1:24.60 | 1:31.33 | top 24.7% | 758 / 1,678 | |
| 2×2 | 4.27 | 5.28 | top 30.0% | 5,137 / 15,796 | |
| Skewb | 6.99 | 9.40 | top 33.6% | 2,053 / 5,004 | |
| Clock | 12.57 | 20.07 | top 37.7% | 900 / 1,843 | |
| 6×6 | 3:11.83 | 3:17.51 | top 46.7% | 906 / 1,349 |
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
- 15 Aug 2026Three personal bests in one day at Hefei August Open 2026.
- 26 Jul 2019Four personal bests in one day at China Championship 2019.
- 22 Dec 2018Three personal bests in one day at Taiyuan Winter 2018.
- 24 Nov 2018Five personal bests in one day at Xuzhou Winter 2018.
- 30 Apr 2018First sub-15 3×3: 13.85 at Beijing Open 2018.
- 25 Mar 2018First sub-20 3×3: 16.38 at Qingdao Open 2018.
Competitions
- Hefei August Open 2026 · 15 Aug 2026 — 3 personal bests set
- Shandong Open 2019 · 4 Oct 2019
- China Championship 2019 · 26 Jul 2019 — 4 personal bests set
- Xuzhou Spring 2019 · 1 May 2019 — 2 personal bests set
- Weihai Open 2019 · 6 Apr 2019 — 2 personal bests set
- Taiyuan Winter 2018 · 22 Dec 2018 — 3 personal bests set
- Zibo Open 2018 · 1 Dec 2018 — 1 personal best set
- Xuzhou Winter 2018 · 24 Nov 2018 — 5 personal bests set
- Beijing Open 2018 · 30 Apr 2018 — 1 personal best set
- Qingdao Open 2018 · 25 Mar 2018 — 3 personal bests set
- Zibo Open 2017 · 23 Dec 2017 — 1 personal best set
- Jinan Open 2017 · 18 Nov 2017
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.
- Xingkai Yin (尹星凯) — met in 42 rounds, never finished ahead
- Yongbin Zhao (赵勇镔) — met in 35 rounds, finished ahead 33 times
- Chenghao Guo (国成浩) — met in 28 rounds, finished ahead 11 times
Next targets
- A sub-3 Pyraminx single — 4,700 people have one; it is 0.41 away.
- A sub-2:00 7×7 single — 83 people have one; it is 48.27 away.
Targets move as he improves.