People · China
Ruoxin Zhou (周若昕)
Square-1 · top 3.2% of 25,662 all-time · competing since November 2016 · 2016ZHOU36
Ruoxin Zhou (周若昕) has been competing for 10 years. His best event is the Square-1: a personal-best single of 8.12, set at Hangzhou Open 2018, puts him in the top 3.2% of the 25,662 people who have ever been ranked in the event, and 41st in China. Until November 2013, no official Square-1 solve in the world had been that fast. Across 14 competitions since November 2016, he has put 318 official solves on the record across six events. Solve to solve, his 3×3 times vary about 15% around a typical one; 82% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 15.21 in November 2016 to 8.39, a 45% improvement. Ruoxin has entered 14 competitions, more competitions than 95% 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 | 8.12 | 9.67 | top 3.2% | 41 / 1,373 | |
| 3×3 | 8.39 | 9.83 | top 3.5% | 1,360 / 28,499 | |
| 4×4 | 39.63 | 43.00 | top 11.7% | 1,274 / 5,999 | |
| 2×2 | 2.80 | 3.91 | top 12.1% | 1,897 / 15,939 | |
| Skewb | 4.88 | 8.00 | top 17.3% | 1,083 / 5,030 | |
| 3×3 one-handed | 24.16 | 25.71 | top 32.0% | 3,135 / 5,994 |
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
- 30 Apr 2018First sub-10 3×3: 9.68 at Nanjing Spring 2018.
- 20 Aug 2017First sub-15 3×3: 10.63 at Yangzhou Open 2017.
- 19 Nov 2016First competition: Hangzhou Autumn 2016. A 15.21 3×3 single to start from.
Competitions
- West Coast Cubing Tour: Los Angeles 2025 · 22 Jun 2025 — 1 personal best set
- Westview Cubing Favorites 2025 · 1 Jun 2025
- UCLA Spring 2025 · 20 Apr 2025
- Agoura Side Events Day 2025 · 6 Apr 2025 — 1 personal best set
- UCSD Fall 2024 · 23 Nov 2024
- Los Angeles Newcomers 2024 · 30 Mar 2024
- USC Cubing 2024 · 3 Feb 2024
- Shenzhen Open 2019 · 21 Sep 2019
- China Championship 2019 · 26 Jul 2019 — 1 personal best set
- Hangzhou Open 2018 · 10 Nov 2018 — 1 personal best set
- Nanjing Spring 2018 · 30 Apr 2018 — 2 personal bests set
- Jinhua New Year's Day 2018 · 1 Jan 2018 — 1 personal best set
- Yangzhou Open 2017 · 20 Aug 2017 — 2 personal bests set
- Hangzhou Autumn 2016 · 19 Nov 2016
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.
- Yunhao Lou (娄云皓) — met in 33 rounds, finished ahead 13 times
- Owen Yepeng Sun (孙叶芃) — met in 27 rounds, finished ahead 20 times
- August Barnard — met in 24 rounds, finished ahead 14 times
Next targets
- A sub-8 Square-1 single — 781 people have one; it is 0.12 away.
- A sub-8 3×3 single — 8,101 people have one; it is 0.39 away.
Targets move as he improves.