People · Chinese Taipei
Kai-Chien Hsu (徐愷謙)
3×3 · top 3.3% of 284,439 all-time · competing since August 2025 · 2025HSUK01
Kai-Chien Hsu (徐愷謙) has been competing for a year. His best event is the 3×3: a personal-best single of 8.29, set at Shin Kong Cube Open - Taichung 2026, puts him in the top 3.3% of the 284,439 people who have ever been ranked in the event, and 187th in Chinese Taipei. Until July 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since August 2025, he has put 91 official solves on the record across five events. Solve to solve, his 3×3 times vary about 18% around a typical one; 97% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 14.09 in August 2025 to 8.29, a 41% improvement. He has entered six competitions, more competitions than 86% 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 | 8.29 | 9.79 | top 3.3% | 187 / 4,213 | |
| 2×2 | 2.25 | 4.33 | top 6.6% | 179 / 1,669 | |
| Pyraminx | 5.64 | 7.77 | top 17.4% | 268 / 1,016 | |
| 3×3 one-handed | 21.12 | 23.18 | top 23.6% | 302 / 802 | |
| 4×4 | 1:05.06 | — | top 41.8% | 675 / 1,078 |
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 2026Three personal bests in one day at Maru Cube Day Taiwan 2026.
- 2 May 2026First sub-10 3×3: 9.70 at Zhongshan Open 2026.
- 17 Aug 2025First competition: Hsinchu Summer Open 2025. A 14.09 3×3 single to start from.
Competitions
- Shin Kong Cube Open - Taichung 2026 · 30 Aug 2026 — 2 personal bests set
- Maru Cube Day Taiwan 2026 · 25 Jul 2026 — 3 personal bests set
- Zhongshan Open 2026 · 2 May 2026 — 1 personal best set
- Taoyuan Airport Cube Day 2025 · 29 Nov 2025
- Shin Kong Cube Open - Taichung 2025 · 22 Nov 2025 — 1 personal best set
- Hsinchu Summer Open 2025 · 17 Aug 2025
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.
- Chan-Yi Lin (林展邑) — met in 20 rounds, finished ahead 4 times
- Chuan-Chen Ho (何權宸) — met in 20 rounds, finished ahead 3 times
- Chun-Pao Ni (倪君寶) — met in 20 rounds, finished ahead twice
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.29 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.25 away.
Targets move as he improves.