People · China
Heng Cai (蔡衡)
Square-1 · top 2.6% of 25,272 all-time · competing since December 2025 · 2025CAIH02
Heng Cai (蔡衡) has been competing for 9 months. His best event is the Square-1: a personal-best single of 7.70, set at Beihai Open 2026, puts him in the top 2.6% of the 25,272 people who have ever been ranked in the event, and 35th in China. Until November 2013, no official Square-1 solve in the world had been that fast. Across 4 competitions since December 2025, he has put 60 official solves on the record across four events. His Square-1 best has come down from 11.00 in April 2026 to 7.70, a 30% improvement. Heng has entered four competitions, more competitions than 78% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| Square-1 | 7.70 | 8.55 | top 2.6% | 35 / 1,362 | |
| 3×3 | 10.06 | 11.56 | top 7.6% | 2,977 / 28,153 | |
| 3×3 one-handed | 18.27 | 20.67 | top 15.8% | 1,557 / 5,922 | |
| 4×4 | 49.66 | 55.95 | top 24.3% | 2,592 / 5,926 |
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, Square-1. Faster is higher — the axis is the right way up.
The story so far
- 20 Jun 2026Four personal bests in one day at NAC Prep in Palisades 2026.
- 15 Dec 2025First competition: Flushing Glow at Night II 2025.
Competitions
- Beihai Open 2026 · 22 Aug 2026 — 1 personal best set
- NAC Prep in Palisades 2026 · 20 Jun 2026 — 4 personal bests set
- Side Events in Palisades 2026 · 5 Apr 2026 — 1 personal best set
- Flushing Glow at Night II 2025 · 15 Dec 2025
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.
- Matthew Liong — met in 10 rounds, finished ahead 4 times
- Parker Trager — met in 10 rounds, finished ahead twice
- Ayden Dincher — met in 10 rounds, never finished ahead
Next targets
- A sub-6 Square-1 single — 201 people have one; it is 1.70 away.
- A sub-10 3×3 single — 21,172 people have one; it is 0.06 away.
Targets move as he improves.