People · Hong Kong, China
Lau Chung Shun (劉重信)
4×4 · top 2.1% of 85,040 all-time · competing since March 2023 · 2023SHUN03
Lau Chung Shun (劉重信) has been competing for 4 years. His best event is the 4×4: a personal-best single of 28.66, set at Hong Kong Championship 2025, puts him in the top 2.1% of the 85,040 people who have ever been ranked in the event, and 18th in Hong Kong, China. Until April 2012, no official 4×4 solve in the world had been that fast. Across 17 competitions since March 2023, he has put 293 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 90% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 9.44 in March 2023 to 7.84, a 17% improvement. Lau has entered 17 competitions, more competitions than 96% 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 | 28.66 | 34.83 | top 2.1% | 18 / 447 | |
| 3×3 | 7.84 | 9.20 | top 2.5% | 69 / 1,424 | |
| 5×5 | 1:00.74 | 1:11.18 | top 6.0% | 28 / 196 | |
| 3×3 one-handed | 16.99 | 23.37 | top 12.6% | 77 / 384 | |
| 2×2 | 3.31 | 4.23 | top 18.0% | 221 / 880 | |
| 6×6 | 2:26.92 | 2:32.50 | top 24.1% | 43 / 90 | |
| Pyraminx | 10.06 | 13.28 | top 53.5% | 300 / 448 |
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
- 15 Nov 2025Three personal bests in one day at Hong Kong Championship 2025.
- 16 Nov 2024Three personal bests in one day at Hong Kong Championship 2024.
- 4 Mar 2023First competition: Hong Kong Cube Day 2023. A 9.44 3×3 single to start from.
Competitions
- Hong Kong Cube Day 2026 · 12 Sep 2026
- Guangzhou Big Cubes 2026 · 20 Jun 2026 — 1 personal best set
- Kansai BLD Summer 2026 · 6 Jun 2026
- Odd Day in Hong Kong 2026 · 26 Apr 2026 — 1 personal best set
- Hong Kong Championship 2025 · 15 Nov 2025 — 3 personal bests set
- HKRCU 20th Anniversary 2025 · 20 Sep 2025
- Hong Kong Cube Day 2025 · 7 Jun 2025
- Xi'an Cherry Blossom 2025 · 4 Apr 2025 — 2 personal bests set
- Hong Kong Championship 2024 · 16 Nov 2024 — 3 personal bests set
- Rubik's WCA Asian Championship 2024 · 1 Nov 2024 — 1 personal best set
- Hong Kong Cube Day 2024 · 31 Aug 2024 — 1 personal best set
- Welcome Back Hong Kong 2024 · 31 Mar 2024 — 1 personal best set
- Shenzhen Youth Open 2023 · 26 Nov 2023 — 1 personal best set
- Rubik's WCA World Championship 2023 · 12 Aug 2023 — 2 personal bests set
- Hong Kong Big Cube Day 2023 · 30 Jul 2023 — 1 personal best set
- Hong Kong Small Cube Day 2023 · 26 May 2023
- Hong Kong Cube Day 2023 · 4 Mar 2023
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.
- Andy Mok Man Cheuk (莫文卓) — met in 53 rounds, never finished ahead
- Timothy Kong Wing Sum (江永琛) — met in 48 rounds, finished ahead once
- Shek Ho Hin (石灝軒) — met in 45 rounds, finished ahead 9 times
Next targets
- A sub-25 4×4 single — 614 people have one; it is 3.66 away.
- A sub-6 3×3 single — 1,419 people have one; it is 1.84 away.
Targets move as he improves.