Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → China → Xizi Cao (曹熙梓)

People · China

Xizi Cao (曹熙梓)

3×3 · top 5.9% of 284,439 all-time · competing since August 2018 · 2018CAOX02

Xizi Cao (曹熙梓) has been competing for 8 years. His best event is the 3×3: a personal-best single of 9.44, set at Meizhou Open 2019, puts him in the top 5.9% of the 284,439 people who have ever been ranked in the event, and 2,294th in China. Until February 2008, no official 3×3 solve in the world had been that fast. Across 2 competitions since August 2018, he has put 29 official solves on the record across two events. Solve to solve, his 3×3 times vary about 8% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 11.40 in August 2018 to 9.44, a 17% improvement. Xizi has entered two competitions.

3×3
best event — top 5.9% of 284,439 all-time
9.44
signature single · Meizhou Open 2019
29
official solves on the record

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
3×39.4411.25
top 5.9%2,294 / 28,153
2×25.586.37
top 46.3%7,928 / 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 line so far

Meizhou Open 2018: 11.40Meizhou Open 2019: 9.449.4411.405 Aug 201821 Jul 2019

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-8 3×3 single — 7,931 people have one; it is 1.44 away.
  • A sub-5 2×2 single — 73,413 people have one; it is 0.58 away.

Targets move as he improves.