People · Chinese Taipei
Ruei-An Tsai (蔡睿安)
3×3 · top 3.2% of 288,433 all-time · competing since June 2023 · 2023TSAI07
Ruei-An Tsai (蔡睿安) has been competing for 3 years. His best event is the 3×3: a personal-best single of 8.21, set at Chemung Cubing 2023, puts him in the top 3.2% of the 288,433 people who have ever been ranked in the event, and 177th in Chinese Taipei. Until July 2008, no official 3×3 solve in the world had been that fast. Across 7 competitions since June 2023, he has put 263 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 13% around a typical one; 61% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 10.21 in June 2023 to 8.21, a 20% improvement. He has entered seven competitions, more competitions than 88% 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 | 8.21 | 9.55 | top 3.2% | 177 / 4,369 | |
| 3×3 one-handed | 14.91 | 18.19 | top 8.0% | 110 / 805 | |
| 2×2 | 2.43 | 3.17 | top 8.3% | 224 / 1,671 | |
| Pyraminx | 4.39 | 7.25 | top 9.7% | 150 / 1,017 | |
| 4×4 | 41.99 | 46.07 | top 14.6% | 321 / 1,079 | |
| Skewb | 4.94 | 9.08 | top 17.7% | 180 / 700 | |
| 5×5 | 1:24.25 | 1:34.25 | top 22.7% | 268 / 640 | |
| Megaminx | 2:07.72 | — | top 50.1% | 244 / 363 | |
| 6×6 | 4:26.35 | 4:39.37 | early days — 3 solves | 257 / 293 | |
| Clock | 40.03 | — | early days — 1 solve | 349 / 370 |
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
- 25 Jul 2026Five personal bests in one day at Maru Cube Day Taiwan 2026.
- 27 Jun 2026Three personal bests in one day at Taipei Cube Open 2026.
- 5 Aug 2023First sub-10 3×3: 9.39 at Chemung Cubing 2023.
- 5 Aug 2023Six personal bests in one day at Chemung Cubing 2023.
- 18 Jun 2023First competition: Taiwan Cubing Challenge 2023. A 10.56 3×3 single to start from.
Competitions
- Maru Cube Day Taiwan 2026 · 25 Jul 2026 — 5 personal bests set
- Chien Kuo Cubing Party 2026 · 18 Jul 2026 — 2 personal bests set
- Taipei Cube Open 2026 · 27 Jun 2026 — 3 personal bests set
- Hsinchu Summer Open 2024 · 17 Aug 2024 — 1 personal best set
- Shin Kong Cube Open 2023 · 16 Sep 2023
- Chemung Cubing 2023 · 5 Aug 2023 — 6 personal bests set
- Taiwan Cubing Challenge 2023 · 18 Jun 2023 — 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.
- Wei-Ming Zeng (曾唯銘) — met in 38 rounds, never finished ahead
- Chao-Che Chung (鍾肇哲) — met in 37 rounds, finished ahead 5 times
- Chun-Pao Ni (倪君寶) — met in 36 rounds, finished ahead 13 times
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 0.21 away.
- A sub-12 3×3 one-handed single — 2,239 people have one; it is 2.91 away.
Targets move as he improves.