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The Middle Three
People → China → Zhouheng Sun (孙舟横)

People · China

Zhouheng Sun (孙舟横)

3×3 one-handed · top 0.062% of 73,695 all-time · competing since August 2008 · 2008SUNZ01

Zhouheng Sun (孙舟横) has been competing for 18 years. His best event is the 3×3 one-handed: a personal-best single of 6.92, set at CubingUSA Western Championship 2023, puts him in the top 0.062% of the 73,695 people who have ever been ranked in the event, and 6th in China. Until May 2015, no official 3×3 one-handed solve in the world had been that fast. Across 61 competitions since August 2008, he has put 2,067 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 14% around a typical one; 76% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 34.00 in August 2008 to 5.34, an 84% improvement. Zhouheng has entered 61 competitions, more competitions than 99% of everyone who has ever competed.

3×3 one-handed
best event — top 0.062% of 73,695 all-time
6.92
signature single · CubingUSA Western Championship 2023
2,067
official solves on the record
14%
solve-to-solve spread · wider than 76% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
3×3 one-handed6.929.14
top 0.062%6 / 5,922
3×35.346.82
top 0.2%84 / 28,153
4×426.1330.54
top 1.0%100 / 5,926
2×21.222.66
top 1.1%122 / 15,796
Megaminx51.231:07.81
top 5.6%128 / 1,678
5×51:04.291:09.90
top 8.0%382 / 2,816
3×3 blindfolded47.63—
top 9.1%140 / 1,183
3×3 Fewest Moves30 moves—
top 14.8%148 / 1,058
Pyraminx7.8311.59
top 34.8%3,812 / 10,224
Square-124.6136.61
top 38.4%653 / 1,362

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

Shanghai Open 2008: 34.00Qingming Festival Open 2009: 23.15Shanghai Weisuo Open 2009: 12.52Hangzhou Open 2010: 11.52Nanjing Spring Open 2010: 11.90Shanghai Open 2010: 9.08Nanjing Winter Open 2010: 8.69Changzhou Spring Festival Open 2011: 8.52Hangzhou Open 2011: 7.56Shanghai Meatball Fall 2011: 7.59Shanghai Port Open 2011: 8.56Shanghai Summer 2012: 9.02Hefei Summer 2012: 8.31Wuxi Open 2013: 8.93Guangzhou SYSU Open 2015: 7.63Hefei Open 2015: 7.67Shanghai Summer Open 2015: 7.19Caltech Fall 2015: 7.53Nanchang Winter 2015: 6.98Yangzhou Open 2016: 7.73Nisei Week 2017: 6.73A Bruin Cube Day 2018: 7.00CubingUSA Nationals 2018: 7.04CubingUSA Northwest Championship 2018: 7.26Another Bruin Cube Day 2019: 6.01CubingUSA Western Championship 2019: 7.36China Championship 2019: 6.82UCSD Winter 2020: 6.95Bay Area Speedcubin' 24 2020: 6.58SacCubing X 2021: 6.16CubingUSA Western Championship 2021: 6.59A Bruin Cube Day 2022: 5.34Bay Area Speedcubin' 32 LIVE - SSF 2022: 6.89Berkeley Summer 2022: 6.86Bay Area Speedcubin' 35 - Pacifica 2022: 6.02Marshall Middle Slice 2022: 6.21Berkeley Fall 2022: 5.92WCC Western Championship 2022: 6.33Bay Area Speedcubin' 39 2022: 6.75SacCubing XIII 2023: 6.26Sleepless in Seattle 2023: 6.73Marshall Cubing Spring 2023: 6.14Bay Area Speedcubin' 46 Live - SSF 2023: 6.63Kent Spring 2023: 6.89UCSD For Hemophilia 2023: 6.36Bay Area Speedcubin' 47 - Berkeley Pride 2023: 5.66CubingUSA Western Championship 2023: 5.96CubingUSA Nationals 2023: 6.53Davis Fall 2023: 6.20UW or U Don't 2023: 5.56Kenmore Mini C 2024: 5.98Bay Area Speedcubin' 60 - Mountain View 2024: 5.78Berkeley November Weekday Tricubealon 2024: 5.93Berkeley December Weekday Tricubealon 2024: 6.00UCSD Maybe 2025: 6.88Warm Up Vancouver 2025: 6.63SacMini 2025: 6.52Rubik's WCA World Championship 2025: 6.475.3434.0030 Aug 20083 Jul 2025

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

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.

Next targets

  • A sub-6 3×3 one-handed single — 4 people have one; it is 0.92 away.
  • A sub-5 3×3 single — 344 people have one; it is 0.34 away.

Targets move as he improves.