People · Chinese Taipei
Kai-Hsing Chang (鄭愷行)
3×3 · top 15.8% of 284,439 all-time · competing since September 2024 · 2024CHAN89
Kai-Hsing Chang (鄭愷行) has been competing for a year. His best event is the 3×3: a personal-best single of 12.54, set at Taiwan Championship 2025, puts him in the top 15.8% of the 284,439 people who have ever been ranked in the event, and 938th in Chinese Taipei. Across 5 competitions since September 2024, he has put 75 official solves on the record across five events. Solve to solve, his 3×3 times vary about 8% around a typical one, an early reading from 6 counted rounds. His 3×3 best has come down from 15.12 in September 2024 to 12.54, 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 | 12.54 | 13.87 | top 15.8% | 938 / 4,213 | |
| 2×2 | 3.19 | 5.10 | top 16.5% | 432 / 1,669 | |
| Pyraminx | 5.80 | 9.03 | top 18.5% | 279 / 1,016 | |
| 3×3 Fewest Moves | 32 moves | 42.00 | top 20.4% | 40 / 204 | |
| Skewb | 5.76 | 7.71 | top 23.9% | 234 / 699 |
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
- 18 Apr 2026Four personal bests in one day at BQHS Spring Open 2026.
- 19 Dec 2025First sub-15 3×3: 12.54 at Taiwan Championship 2025.
- 19 Dec 2025Three personal bests in one day at Taiwan Championship 2025.
- 28 Sep 2024First competition: Shin Kong Cube Open - New Taipei 2024. A 15.12 3×3 single to start from.
Competitions
- BQHS Spring Open 2026 · 18 Apr 2026 — 4 personal bests set
- Taiwan Championship 2025 · 19 Dec 2025 — 3 personal bests set
- Please Be Quiet Taiwan 2025 · 18 Oct 2025
- Taiwan Championship 2024 · 6 Dec 2024
- Shin Kong Cube Open - New Taipei 2024 · 28 Sep 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.
- Chao-Che Chung (鍾肇哲) — met in 16 rounds, never finished ahead
- Hung-Tsang Chen (陳泓滄) — met in 15 rounds, finished ahead 10 times
- Chun-Pao Ni (倪君寶) — met in 14 rounds, finished ahead twice
Next targets
- A sub-12 3×3 single — 39,535 people have one; it is 0.54 away.
- A sub-3 2×2 single — 26,570 people have one; it is 0.19 away.
Targets move as he improves.