People · Chinese Taipei
Chi-Jui Tsai (蔡其叡)
3×3 · top 4.8% of 284,439 all-time · competing since December 2017 · 2017TSAI07
Chi-Jui Tsai (蔡其叡) has been competing for 9 years. His best event is the 3×3: a personal-best single of 8.98, set at Taiwan Championship 2019, puts him in the top 4.8% of the 284,439 people who have ever been ranked in the event, and 286th in Chinese Taipei. Until May 2008, no official 3×3 solve in the world had been that fast. Across 5 competitions since December 2017, he has put 101 official solves on the record across five events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 10.88 in December 2017 to 8.98, a 17% improvement. He 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 | Chinese Taipei | |
|---|---|---|---|---|---|
| 3×3 | 8.98 | 11.46 | top 4.8% | 286 / 4,213 | |
| 3×3 one-handed | 17.02 | 19.60 | top 12.6% | 171 / 802 | |
| 2×2 | 3.34 | 4.77 | top 18.3% | 468 / 1,669 | |
| 4×4 | 56.72 | 1:01.20 | top 32.8% | 564 / 1,078 | |
| 5×5 | 1:41.48 | 2:24.37 | top 36.5% | 371 / 639 |
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
- 13 Dec 2019First sub-10 3×3: 8.98 at Taiwan Championship 2019.
- 13 Dec 2019Four personal bests in one day at Taiwan Championship 2019.
- 8 Dec 2017First competition: Taiwan Championship 2017. A 13.64 3×3 single to start from.
Competitions
- BQHS Spring Open 2025 · 13 Apr 2025
- Shin Kong Cube Open 2023 · 16 Sep 2023
- Taiwan Championship 2019 · 13 Dec 2019 — 4 personal bests set
- Hsinchu Winter Open 2018 · 4 Feb 2018 — 2 personal bests set
- Taiwan Championship 2017 · 8 Dec 2017 — 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.
- Shih-Hao Wang (王士豪) — met in 23 rounds, finished ahead twice
- Kai-Wen Wang (王楷文) — met in 23 rounds, finished ahead once
- Chao-Che Chung (鍾肇哲) — met in 23 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.98 away.
- A sub-15 3×3 one-handed single — 5,987 people have one; it is 2.02 away.
Targets move as he improves.