People · China
Jun Cao (曹骏)
Skewb · top 9.6% of 74,164 all-time · competing since January 2021 · 2021CAOJ01
Jun Cao (曹骏) has been competing for 6 years. His best event is the Skewb: a personal-best single of 3.80, set at Chengdu Embracing Summer 2026, puts him in the top 9.6% of the 74,164 people who have ever been ranked in the event, and 566th in China. Until February 2014, no official Skewb solve in the world had been that fast. Across 6 competitions since January 2021, he has put 124 official solves on the record across eleven events. His Skewb best has come down from 6.39 in January 2021 to 3.80, a 41% improvement. Jun has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| Skewb | 3.80 | 5.03 | top 9.6% | 566 / 5,030 | |
| Pyraminx | 4.58 | 5.65 | top 10.7% | 1,293 / 10,269 | |
| Megaminx | 1:05.59 | 1:06.84 | top 13.1% | 377 / 1,693 | |
| 3×3 | 12.81 | 15.61 | top 16.8% | 6,721 / 28,499 | |
| 3×3 one-handed | 19.55 | 22.53 | top 19.4% | 1,976 / 5,994 | |
| Square-1 | 17.96 | 26.13 | top 23.3% | 388 / 1,373 | |
| 6×6 | 2:36.86 | 2:55.76 | early days — 3 solves | 631 / 1,363 | |
| 5×5 | 1:34.93 | — | early days — 2 solves | 1,453 / 2,857 | |
| 4×4 | 55.77 | — | top 31.8% | 3,249 / 5,999 | |
| Clock | 11.70 | 12.43 | top 33.4% | 824 / 1,887 | |
| 2×2 | 5.49 | 5.86 | top 45.3% | 7,867 / 15,939 |
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, Skewb. Faster is higher — the axis is the right way up.
The story so far
- 5 Apr 2024First sub-15 3×3: 14.25 at Xi'an Cherry Blossom 2024.
- 5 Apr 2024Four personal bests in one day at Xi'an Cherry Blossom 2024.
- 3 Jan 2021First competition: Chengdu New Year Afternoon 2021. A 16.16 3×3 single to start from.
Competitions
- Chengdu Embracing Summer 2026 · 5 May 2026 — 2 personal bests set
- Chengdu Welcoming Summer 2026 · 4 May 2026 — 2 personal bests set
- Chengdu Spring Open 2025 · 8 Feb 2025 — 1 personal best set
- Chengdu Summer 2024 · 20 Jul 2024 — 1 personal best set
- Xi'an Cherry Blossom 2024 · 5 Apr 2024 — 4 personal bests set
- Chengdu New Year Afternoon 2021 · 3 Jan 2021 — 1 personal best 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.
- Yanchen Long (龙彦辰) — met in 19 rounds, finished ahead 6 times
- Zhenyu Wang (王振宇) — met in 17 rounds, finished ahead once
- Yanrui Xie (谢延睿) — met in 16 rounds, finished ahead 6 times
Next targets
- A sub-3 Skewb single — 3,709 people have one; it is 0.80 away.
- A sub-4 Pyraminx single — 10,050 people have one; it is 0.58 away.
Targets move as he improves.