People · China
Zhenzhu Cai (蔡镇宁)
3×3 · top 6.1% of 288,433 all-time · competing since August 2024 · 2024CAIZ03
Zhenzhu Cai (蔡镇宁) has been competing for 2 years. His best event is the 3×3: a personal-best single of 9.50, set at Beijing Autumn Rivalry 2026, puts him in the top 6.1% of the 288,433 people who have ever been ranked in the event, and 2,409th in China. Until February 2008, no official 3×3 solve in the world had been that fast. Across 5 competitions since August 2024, he has put 46 official solves on the record across five events. His 3×3 best has come down from 19.42 in November 2025 to 9.50, a 51% improvement. Zhenzhu has entered five competitions, more competitions than 83% 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 | 9.50 | 11.70 | top 6.1% | 2,409 / 28,499 | |
| Pyraminx | 6.64 | 9.28 | top 25.0% | 2,855 / 10,269 | |
| 3×3 one-handed | 28.31 | — | early days — 1 solve | 3,936 / 5,994 | |
| Megaminx | 2:17.00 | — | early days — 2 solves | 1,401 / 1,693 | |
| 4×4 | 1:26.68 | — | early days — 1 solve | 5,144 / 5,999 |
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
- 1 Oct 2026First sub-10 3×3: 9.50 at Beijing Autumn Rivalry 2026.
- 28 Mar 2026First sub-15 3×3: 13.71 at Beijing Spring Open 2026.
- 18 Aug 2024First competition: Please Be Quiet Beijing 2024.
Competitions
- Beijing Autumn Rivalry 2026 · 1 Oct 2026 — 2 personal bests set
- Beijing Spring Open 2026 · 28 Mar 2026 — 1 personal best set
- Beijing Winter 2026 · 10 Jan 2026 — 2 personal bests set
- Beijing Only 3x3 2025 · 23 Nov 2025
- Please Be Quiet Beijing 2024 · 18 Aug 2024
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.
- Xiang Li (李响) — met in 11 rounds, finished ahead 3 times
- Youran Shao (邵宥然) — met in 11 rounds, never finished ahead
- Yiqin Sun (孙弋钦) — met in 10 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 1.50 away.
- A sub-6 Pyraminx single — 26,233 people have one; it is 0.64 away.
Targets move as he improves.