People · China
Dong Cao (曹东)
3×3 · top 5.3% of 284,439 all-time · competing since August 2013 · 2013CAOD01
Dong Cao (曹东) has been competing for 13 years. His best event is the 3×3: a personal-best single of 9.18, set at Shanghai Love In ECNU 2017, puts him in the top 5.3% of the 284,439 people who have ever been ranked in the event, and 2,034th in China. Until February 2008, no official 3×3 solve in the world had been that fast. Across 12 competitions since August 2013, he has put 387 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 13% around a typical one; 53% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 16.28 in August 2013 to 9.18, a 44% improvement. Dong 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 | |
|---|---|---|---|---|---|
| 3×3 | 9.18 | 11.87 | top 5.3% | 2,034 / 28,153 | |
| 2×2 | 2.64 | 4.31 | top 10.3% | 1,571 / 15,796 | |
| 4×4 | 40.83 | 45.55 | top 13.1% | 1,420 / 5,926 | |
| Pyraminx | 5.15 | 6.93 | top 14.1% | 1,674 / 10,224 | |
| 3×3 one-handed | 23.71 | 27.71 | top 30.7% | 2,967 / 5,922 | |
| Skewb | 10.23 | 11.66 | top 56.3% | 3,124 / 5,004 | |
| 5×5 | 2:20.48 | 2:30.69 | top 61.3% | 2,407 / 2,816 |
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
- 5 Aug 2017Three personal bests in one day at Wuxi Open 2017.
- 20 May 2017Three personal bests in one day at Shanghai Love In ECNU 2017.
- 20 Nov 2016Three personal bests in one day at Zhenjiang Open 2016.
- 7 Nov 2015First sub-10 3×3: 9.53 at Zhenjiang Open 2015.
- 7 Nov 2015Three personal bests in one day at Zhenjiang Open 2015.
- 24 Oct 2015Eight personal bests in one day at Nanjing Autumn 2015.
Competitions
- Kunshan Morning 2021 · 2 May 2021
- Suzhou Open 2019 · 4 Aug 2019 — 1 personal best set
- Hangzhou Open 2018 · 10 Nov 2018 — 1 personal best set
- Suzhou Open 2018 · 5 Aug 2018
- Wuxi Open 2017 · 5 Aug 2017 — 3 personal bests set
- Shanghai Love In ECNU 2017 · 20 May 2017 — 3 personal bests set
- Zhenjiang Open 2016 · 20 Nov 2016 — 3 personal bests set
- Suzhou Open 2016 · 2 Jul 2016 — 1 personal best set
- Zhenjiang Open 2015 · 7 Nov 2015 — 3 personal bests set
- Nanjing Autumn 2015 · 24 Oct 2015 — 8 personal bests set
- Wuxi Open 2015 · 8 Aug 2015 — 6 personal bests set
- Wuxi Open 2013 · 17 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.
- Yinghao Wang (王鹰豪) — met in 51 rounds, finished ahead once
- Jiayu Wang (王佳宇) — met in 43 rounds, finished ahead twice
- Xiaobin Rui (芮晓彬) — met in 37 rounds, finished ahead once
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.18 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.64 away.
Targets move as he improves.