People · Hong Kong, China
Kam Chun Hei (金駿熙)
3×3 · top 6.4% of 284,439 all-time · competing since February 2017 · 2017HEIK01
Kam Chun Hei (金駿熙) has been competing for 10 years. His best event is the 3×3: a personal-best single of 9.62, set at Hong Kong Cube Day 2025, puts him in the top 6.4% of the 284,439 people who have ever been ranked in the event, and 168th in Hong Kong, China. Until November 2007, no official 3×3 solve in the world had been that fast. Across 7 competitions since February 2017, he has put 85 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 13% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 22.40 in February 2017 to 9.62, a 57% improvement. Kam 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 | 9.62 | 11.63 | top 6.4% | 168 / 1,347 | |
| 5×5 | 1:04.76 | 1:21.86 | top 8.2% | 36 / 192 | |
| Pyraminx | 4.29 | 5.10 | top 9.1% | 66 / 431 | |
| 4×4 | 38.93 | 41.34 | top 10.9% | 86 / 423 | |
| 6×6 | 2:13.53 | 2:27.90 | early days — 3 solves | 33 / 87 | |
| 3×3 blindfolded | 1:59.91 | — | early days — 2 solves | 33 / 65 | |
| 2×2 | 5.15 | 8.36 | top 41.2% | 468 / 855 |
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: 10.95 at Hong Kong Small Cube Day 2023.
- 26 May 2023First sub-10 3×3: 9.95 at Hong Kong Small Cube Day 2023.
- 26 Aug 2017First sub-20 3×3: 17.86 at Hong Kong Open 2017.
- 25 Feb 2017First competition: Hong Kong Cube Day 2017. A 22.40 3×3 single to start from.
Competitions
- Hong Kong Cube Day 2025 · 7 Jun 2025 — 2 personal bests set
- Hong Kong Championship 2023 · 21 Oct 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 — 2 personal bests set
- Hong Kong Cube Day 2019 · 26 Jan 2019
- Hong Kong Open 2017 · 26 Aug 2017 — 2 personal bests set
- Hong Kong Cube Day 2017 · 25 Feb 2017
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 21 rounds, finished ahead twice
- Wu Chun Yin (胡俊賢) — met in 18 rounds, finished ahead 5 times
- Timothy Kong Wing Sum (江永琛) — met in 18 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.62 away.
- A sub-1:00 5×5 single — 2,252 people have one; it is 4.76 away.
Targets move as he improves.