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The Middle Three
People → China → Chengkai Sun (孙诚锴)

People · China

Chengkai Sun (孙诚锴)

3×3 · top 23.9% of 284,439 all-time · competing since August 2019 · 2019SUNC03

Chengkai Sun (孙诚锴) has been competing for 7 years. His best event is the 3×3: a personal-best single of 14.85, set at Mudd Fall 2019, puts him in the top 23.9% of the 284,439 people who have ever been ranked in the event, and 9,078th in China. Across 6 competitions since August 2019, he has put 44 official solves on the record across one event. Solve to solve, his 3×3 times vary about 9% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 17.34 in August 2019 to 14.85, a 14% improvement. Chengkai has entered six competitions, more competitions than 86% of everyone who has ever competed.

3×3
best event — top 23.9% of 284,439 all-time
14.85
signature single · Mudd Fall 2019
44
official solves on the record

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
3×314.8517.35
top 23.9%9,078 / 28,153

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

Nisei Week 2019: 17.34Mudd Fall 2019: 14.85Shaoxing Morning 2021: 15.20San Diego Spring 2022: 16.78Railroad City 2023: 15.94Happy Valley Spring 2024: 16.2214.8517.3417 Aug 201930 Mar 2024

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-12 3×3 single — 39,535 people have one; it is 2.85 away.

Targets move as he improves.