Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → China → Liangzheng Sun (孙良正)

People · China

Liangzheng Sun (孙良正)

Pyraminx · top 10.8% of 129,321 all-time · competing since May 2016 · 2016SUNL01

Liangzheng Sun (孙良正) has been competing for 10 years. His best event is the Pyraminx: a personal-best single of 4.60, set at Weihai Open 2017, puts him in the top 10.8% of the 129,321 people who have ever been ranked in the event, and 1,284th in China. Across 2 competitions since May 2016, he has put 22 official solves on the record across three events. Liangzheng has entered two competitions.

Pyraminx
best event — top 10.8% of 129,321 all-time
4.60
signature single · Weihai Open 2017
22
official solves on the record

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
Pyraminx4.605.93
top 10.8%1,284 / 10,224
3×330.8036.79
top 63.9%19,277 / 28,153
2×29.7812.69
top 77.1%12,486 / 15,796

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 story so far

  • 15 May 2016First competition: Weihai Open 2016. A 36.33 3×3 single to start from.

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-4 Pyraminx single — 9,892 people have one; it is 0.60 away.
  • A sub-30 3×3 single — 177,856 people have one; it is 0.80 away.

Targets move as he improves.