People · China
Jichen Zha (查吉辰)
3×3 · top 2.3% of 284,439 all-time · competing since August 2013 · 2013ZHAJ01
Jichen Zha (查吉辰) has been competing for 13 years. His best event is the 3×3: a personal-best single of 7.70, set at Hefei Cubing League 3x3 IV 2026, puts him in the top 2.3% of the 284,439 people who have ever been ranked in the event, and 826th in China. Until July 2008, no official 3×3 solve in the world had been that fast. Across 18 competitions since August 2013, he has put 612 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 68% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 16.44 in August 2013 to 7.70, a 53% improvement. Jichen has entered 18 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 3×3 | 7.70 | 9.56 | top 2.3% | 826 / 28,153 | |
| Pyraminx | 2.85 | 5.18 | top 3.1% | 365 / 10,224 | |
| 4×4 | 34.20 | 37.06 | top 6.0% | 607 / 5,926 | |
| 2×2 | 2.68 | 4.19 | top 10.7% | 1,634 / 15,796 | |
| 3×3 one-handed | 17.43 | 21.63 | top 13.7% | 1,359 / 5,922 | |
| 5×5 | 1:16.06 | 1:23.92 | top 16.2% | 786 / 2,816 | |
| Skewb | 5.07 | 6.57 | top 18.7% | 1,163 / 5,004 | |
| Square-1 | 18.23 | 29.01 | top 23.9% | 399 / 1,362 | |
| Megaminx | 1:29.53 | 1:40.33 | top 27.9% | 850 / 1,678 | |
| Clock | 10.82 | 12.86 | top 29.2% | 684 / 1,843 | |
| 7×7 | 3:59.90 | 4:05.26 | top 30.6% | 600 / 1,261 | |
| 6×6 | 2:41.35 | 2:54.37 | top 31.5% | 672 / 1,349 | |
| 3×3 blindfolded | 3:29.63 | — | early days — 2 solves | 844 / 1,183 |
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
- 4 Aug 2019Three personal bests in one day at Suzhou Open 2019.
- 10 Dec 2017First sub-10 3×3: 9.71 at Zhenjiang Open 2017.
- 10 Dec 2017Three personal bests in one day at Zhenjiang Open 2017.
- 4 Nov 2017Three personal bests in one day at Nanjing Autumn 2017.
- 5 Aug 2017Three personal bests in one day at Wuxi Open 2017.
- 30 Apr 2017Five personal bests in one day at Nanjing Spring 2017.
Competitions
- Hefei Cubing League 3x3 IV 2026 · 1 Jul 2026 — 1 personal best set
- Hefei Cubing League 3x3 I 2026 · 20 May 2026 — 1 personal best set
- Suzhou Open 2019 · 4 Aug 2019 — 3 personal bests set
- Kunshan Open 2018 · 21 Apr 2018 — 1 personal best set
- Zhenjiang Open 2017 · 10 Dec 2017 — 3 personal bests set
- Nanjing Autumn 2017 · 4 Nov 2017 — 3 personal bests set
- Yangzhou Open 2017 · 20 Aug 2017 — 1 personal best set
- Wuxi Open 2017 · 5 Aug 2017 — 3 personal bests set
- Shanghai Love In ECNU 2017 · 20 May 2017
- Nanjing Spring 2017 · 30 Apr 2017 — 5 personal bests set
- Shanghai Winter is Coming 2016 · 5 Nov 2016 — 3 personal bests set
- Nanjing Spring 2016 · 30 Apr 2016 — 6 personal bests set
- Wuxi Open 2015 · 8 Aug 2015 — 4 personal bests set
- Nanjing Spring 2015 · 1 May 2015 — 3 personal bests set
- Nanjing Autumn 2014 · 18 Oct 2014 — 5 personal bests set
- Suzhou Open 2014 · 12 Jul 2014 — 3 personal bests set
- Wuxi Open 2013 · 17 Aug 2013 — 1 personal best set
- Shanghai Summer 2013 · 3 Aug 2013
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.
- Jiayu Wang (王佳宇) — met in 76 rounds, finished ahead 11 times
- Yinghao Wang (王鹰豪) — met in 72 rounds, finished ahead 4 times
- Renxin Tang (汤任欣) — met in 58 rounds, finished ahead 16 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 1.70 away.
- A sub-2 Pyraminx single — 1,476 people have one; it is 0.85 away.
Targets move as he improves.