People · Hong Kong, China
Lee Man Sum (李文琛)
3×3 · top 5.0% of 288,433 all-time · competing since March 2024 · 2024SUML01
Lee Man Sum (李文琛) has been competing for 3 years. His best event is the 3×3: a personal-best single of 9.05, set at Foshan Open 2026, puts him in the top 5.0% of the 288,433 people who have ever been ranked in the event, and 150th in Hong Kong, China. Until May 2008, no official 3×3 solve in the world had been that fast. Across 7 competitions since March 2024, he has put 108 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 16.54 in March 2024 to 9.05, a 45% improvement. Lee 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 | Hong Kong, China | |
|---|---|---|---|---|---|
| 3×3 | 9.05 | 10.76 | top 5.0% | 150 / 1,424 | |
| Pyraminx | 4.61 | 7.34 | top 10.9% | 77 / 448 | |
| 2×2 | 3.15 | 4.77 | top 16.1% | 198 / 880 | |
| Skewb | 6.43 | 9.14 | top 29.2% | 124 / 293 | |
| Square-1 | 40.78 | — | early days — 2 solves | 99 / 127 | |
| 4×4 | 1:33.90 | — | early days — 1 solve | 370 / 447 | |
| Clock | 20.84 | — | early days — 3 solves | 138 / 159 | |
| 3×3 one-handed | 1:20.74 | — | early days — 2 solves | 379 / 384 |
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
- 2 May 2026First sub-10 3×3: 9.87 at Foshan Open 2026.
- 2 May 2026Three personal bests in one day at Foshan Open 2026.
- 15 Nov 2025Four personal bests in one day at Hong Kong Championship 2025.
- 16 Nov 2024First sub-15 3×3: 13.08 at Hong Kong Championship 2024.
- 16 Nov 2024Four personal bests in one day at Hong Kong Championship 2024.
- 31 Mar 2024First competition: Welcome Back Hong Kong 2024. A 16.54 3×3 single to start from.
Competitions
- Hong Kong Autumn Cube Day 2026 · 17 Oct 2026
- Foshan Open 2026 · 2 May 2026 — 3 personal bests set
- Zhengzhou Zest 2025 · 27 Dec 2025
- Hong Kong Championship 2025 · 15 Nov 2025 — 4 personal bests set
- HKRCU 20th Anniversary 2025 · 20 Sep 2025 — 1 personal best set
- Hong Kong Championship 2024 · 16 Nov 2024 — 4 personal bests 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 25 rounds, never finished ahead
- Rinji Chan Pak Hei (陳柏熹) — met in 21 rounds, finished ahead once
- Antonio Li Ka Ming (李家銘) — met in 20 rounds, finished ahead 3 times
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 1.05 away.
- A sub-4 Pyraminx single — 10,050 people have one; it is 0.61 away.
Targets move as he improves.