People · Malaysia
Chang Kai Hean
2×2 · top 3.1% of 186,767 all-time · competing since March 2023 · 2023HEAN01
Chang Kai Hean has been competing for 4 years. His best event is the 2×2: a personal-best single of 1.70, set at XMUM Cube Open 2026, puts him in the top 3.1% of the 186,767 people who have ever been ranked in the event, and 71st in Malaysia. Until February 2008, no official 2×2 solve in the world had been that fast. Across 6 competitions since March 2023, he has put 244 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 66% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 10.99 in March 2023 to 8.44, a 23% improvement. Chang 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 | Malaysia | |
|---|---|---|---|---|---|
| 2×2 | 1.70 | 4.17 | top 3.1% | 71 / 2,541 | |
| 3×3 | 8.44 | 10.90 | top 3.6% | 178 / 3,773 | |
| Pyraminx | 3.70 | 5.63 | top 6.3% | 113 / 1,723 | |
| 4×4 | 34.80 | 41.83 | top 6.5% | 106 / 1,219 | |
| 3×3 one-handed | 14.66 | 22.04 | top 7.4% | 108 / 1,327 | |
| 5×5 | 1:10.28 | 1:23.34 | top 11.8% | 97 / 617 | |
| Skewb | 4.56 | 5.93 | top 14.9% | 170 / 1,053 | |
| 6×6 | 3:08.95 | 3:24.12 | top 45.1% | 140 / 232 | |
| Megaminx | 2:22.48 | — | early days — 2 solves | 352 / 518 | |
| 7×7 | 9:31.79 | — | early days — 1 solve | 188 / 188 |
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
- 7 Sep 2024Six personal bests in one day at UTP Cube Open 2024.
- 25 May 2024First sub-10 3×3: 9.92 at Sunway Velocity Mall Open 2024.
- 25 May 2024Three personal bests in one day at Sunway Velocity Mall Open 2024.
- 1 Dec 2023Three personal bests in one day at Malaysia Cube Championship 2023.
- 10 Sep 2023Three personal bests in one day at XMUM Cube Open 2023.
- 10 Mar 2023First competition: Yong Jun KL Speedcubing 2023. A 10.99 3×3 single to start from.
Competitions
- XMUM Cube Open 2026 · 28 Feb 2026 — 2 personal bests set
- UTP Cube Open 2024 · 7 Sep 2024 — 6 personal bests set
- Sunway Velocity Mall Open 2024 · 25 May 2024 — 3 personal bests set
- Malaysia Cube Championship 2023 · 1 Dec 2023 — 3 personal bests set
- XMUM Cube Open 2023 · 10 Sep 2023 — 3 personal bests set
- Yong Jun KL Speedcubing 2023 · 10 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.
- Wong Ming Liang (黃泯量) — met in 47 rounds, finished ahead 36 times
- Eng Dickson (黄迪胜) — met in 43 rounds, finished ahead 17 times
- Sri Ganesh Krishna — met in 41 rounds, finished ahead 26 times
Next targets
- A sub-1 2×2 single — 1,032 people have one; it is 0.70 away.
- A sub-8 3×3 single — 7,931 people have one; it is 0.44 away.
Targets move as he improves.