People · Macau, China
Choi Iat Hei (蔡溢希)
3×3 · top 8.8% of 288,433 all-time · competing since March 2024 · 2024HEIC02
Choi Iat Hei (蔡溢希) has been competing for 3 years. His best event is the 3×3: a personal-best single of 10.43, set at Guangzhou GraDUAL 3x3 IV 2026, puts him in the top 8.8% of the 288,433 people who have ever been ranked in the event, and 8th in Macau, China. Until February 2007, no official 3×3 solve in the world had been that fast. Across 7 competitions since March 2024, he has put 64 official solves on the record across two events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 8 counted rounds. His 3×3 best has come down from 24.87 in March 2024 to 10.43, a 58% improvement. Choi 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 | Macau, China | |
|---|---|---|---|---|---|
| 3×3 | 10.43 | 12.63 | top 8.8% | 8 / 53 | |
| 2×2 | 2.85 | 4.41 | top 12.6% | 6 / 34 |
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
- 20 Sep 2025First sub-15 3×3: 14.66 at HKRCU 20th Anniversary 2025.
- 15 Jun 2025First sub-20 3×3: 15.71 at Zhuhai Open 2025.
- 31 Mar 2024First competition: Welcome Back Hong Kong 2024. A 24.87 3×3 single to start from.
Competitions
- Guangzhou GraDUAL 3x3 IV 2026 · 16 Sep 2026 — 2 personal bests set
- Zhuhai Pi Day 2026 · 14 Mar 2026 — 1 personal best set
- Guangzhou Small Cubes 2025 · 9 Nov 2025 — 1 personal best set
- HKRCU 20th Anniversary 2025 · 20 Sep 2025 — 1 personal best set
- Zhuhai Open 2025 · 15 Jun 2025 — 1 personal best set
- Hong Kong Championship 2024 · 16 Nov 2024 — 1 personal best set
- Welcome Back Hong Kong 2024 · 31 Mar 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.
- Yang Pin Xiu (楊品修) — met in 13 rounds, never finished ahead
- Ziqiao Lin (林子乔) — met in 10 rounds, never finished ahead
- Zijian Cai (蔡子健) — met in 9 rounds, finished ahead once
Next targets
- A sub-10 3×3 single — 21,606 people have one; it is 0.43 away.
- A sub-2 2×2 single — 9,039 people have one; it is 0.85 away.
Targets move as he improves.