People · China
Hui Cai (蔡辉)
4×4 blindfolded · top 1.8% of 2,174 all-time · competing since May 2018 · 2018CAIH01
Hui Cai (蔡辉) has been competing for 8 years. His best event is the 4×4 blindfolded: a personal-best single of 1:48.62, set at Please Be Quiet Xi'an 2026, puts him in the top 1.8% of the 2,174 people who have ever been ranked in the event, and 3rd in China. Until December 2016, no official 4×4 blindfolded solve in the world had been that fast. Across 14 competitions since May 2018, he has put 90 official solves on the record across five events. His 3×3 blindfolded best has come down from 49.29 in June 2018 to 26.74, a 46% improvement. Hui has entered 14 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 4×4 blindfolded | 1:48.62 | — | top 1.8% | 3 / 149 | |
| 3×3 Multi-Blind | 31 of 34 cubes · 57:10 | — | top 1.8% | 4 / 278 | |
| 5×5 blindfolded | 4:08.51 | — | top 2.3% | 3 / 95 | |
| 3×3 blindfolded | 26.74 | 30.13 | top 3.4% | 54 / 1,183 | |
| Clock | 8.57 | 10.28 | top 17.8% | 394 / 1,843 |
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 blindfolded. Faster is higher — the axis is the right way up.
The story so far
- 23 Aug 2026Four personal bests in one day at Please Be Quiet Xi'an 2026.
- 4 Oct 2019Three personal bests in one day at Shandong Open 2019.
- 20 Apr 2019Five personal bests in one day at Shanghai Memory Nightmare 2019.
- 5 May 2018First competition: Nanchang Summer Is Coming 2018.
Competitions
- Please Be Quiet Xi'an 2026 · 23 Aug 2026 — 4 personal bests set
- Zhengzhou Summer II 2025 · 23 Aug 2025 — 2 personal bests set
- Please Be Quiet Beijing 2024 · 18 Aug 2024
- Big 'n Blind Guangzhou 2019 · 8 Dec 2019 — 2 personal bests set
- Wuhan Autumn 2019 · 13 Oct 2019 — 1 personal best set
- Shandong Open 2019 · 4 Oct 2019 — 3 personal bests set
- Hefei Summer 2019 · 22 Jun 2019
- Please Be Quiet Beijing 2019 · 15 Jun 2019 — 2 personal bests set
- Wuhan Open 2019 · 2 May 2019 — 2 personal bests set
- Shanghai Memory Nightmare 2019 · 20 Apr 2019 — 5 personal bests set
- Weihai Open 2019 · 6 Apr 2019 — 2 personal bests set
- China Championship 2018 · 2 Oct 2018
- Please Be Quiet Beijing 2018 · 30 Jun 2018
- Nanchang Summer Is Coming 2018 · 5 May 2018
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.
- Yifan Wang (王逸帆) — met in 41 rounds, finished ahead 21 times
- Yucheng Chen (陈裕铖) — met in 33 rounds, finished ahead 11 times
- Kaijun Lin (林恺俊) — met in 30 rounds, finished ahead 4 times
Next targets
- A sub-1:30 4×4 blindfolded single — 16 people have one; it is 18.62 away.
- A sub-3:00 5×5 blindfolded single — 10 people have one; it is 1:08.51 away.
Targets move as he improves.