People · Hong Kong, China
Yau Wai Chun (丘瑋俊)
4×4 · top 10.5% of 83,917 all-time · competing since August 2016 · 2016CHUN08
Yau Wai Chun (丘瑋俊) has been competing for 10 years. His best event is the 4×4: a personal-best single of 38.67, set at Hong Kong Cube Day 2025, puts him in the top 10.5% of the 83,917 people who have ever been ranked in the event, and 84th in Hong Kong, China. Across 6 competitions since August 2016, he has put 79 official solves on the record across nine events. Solve to solve, his 3×3 times vary about 10% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 15.93 in August 2016 to 12.30, a 23% improvement. Yau 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 | Hong Kong, China | |
|---|---|---|---|---|---|
| 4×4 | 38.67 | 43.39 | top 10.5% | 84 / 423 | |
| 3×3 | 12.30 | 13.87 | top 14.9% | 327 / 1,347 | |
| Pyraminx | 6.52 | 11.43 | top 24.0% | 154 / 431 | |
| Megaminx | 1:25.41 | 1:31.33 | top 25.2% | 64 / 154 | |
| Square-1 | 19.80 | 36.82 | top 27.6% | 60 / 126 | |
| 2×2 | 4.98 | 6.01 | top 39.1% | 448 / 855 | |
| 3×3 one-handed | 27.23 | 30.79 | top 39.9% | 218 / 361 | |
| Skewb | 8.80 | 14.28 | top 47.1% | 176 / 285 | |
| 5×5 | 2:05.37 | — | early days — 2 solves | 134 / 192 |
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
- 26 May 2023First sub-15 3×3: 12.30 at Hong Kong Small Cube Day 2023.
- 20 Aug 2016First competition: Arnold Classic Asia 2016. A 15.93 3×3 single to start from.
Competitions
- Hong Kong Cube Day 2025 · 7 Jun 2025 — 1 personal best set
- Hong Kong Championship 2024 · 16 Nov 2024 — 1 personal best set
- Hong Kong Championship 2023 · 21 Oct 2023 — 2 personal bests set
- Hong Kong Big Cube Day 2023 · 30 Jul 2023
- Hong Kong Small Cube Day 2023 · 26 May 2023 — 1 personal best set
- Arnold Classic Asia 2016 · 20 Aug 2016
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.
- Ivan Li Ka Leong (李嘉亮) — met in 19 rounds, never finished ahead
- Andy Mok Man Cheuk (莫文卓) — met in 17 rounds, finished ahead once
- Shek Ho Hin (石灝軒) — met in 17 rounds, finished ahead once
Next targets
- A sub-30 4×4 single — 2,388 people have one; it is 8.67 away.
- A sub-12 3×3 single — 39,535 people have one; it is 0.30 away.
Targets move as he improves.