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People → China → Zhuojia Zhou (周琢嘉)

People · China

Zhuojia Zhou (周琢嘉)

4×4 · top 1.8% of 83,917 all-time · competing since June 2024 · 2024ZHOU23

Zhuojia Zhou (周琢嘉) has been competing for 2 years. His best event is the 4×4: a personal-best single of 27.99, set at Beijing University Cube League 2025, puts him in the top 1.8% of the 83,917 people who have ever been ranked in the event, and 166th in China. Until April 2012, no official 4×4 solve in the world had been that fast. Across 21 competitions since June 2024, he has put 452 official solves on the record across 15 events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 61% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 8.88 in June 2024 to 7.70, a 13% improvement. Zhuojia has entered 21 competitions, more competitions than 97% of everyone who has ever competed.

4×4
best event — top 1.8% of 83,917 all-time
27.99
signature single · Beijing University Cube League 2025
452
official solves on the record
12%
solve-to-solve spread · steadier than 61% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
4×427.9933.82
top 1.8%166 / 5,926
3×37.708.91
top 2.3%826 / 28,153
Pyraminx2.946.02
top 3.4%405 / 10,224
5×559.361:04.13
top 5.2%244 / 2,816
3×3 one-handed14.7818.78
top 7.7%740 / 5,922
Megaminx58.811:04.49
top 9.4%232 / 1,678
7×72:57.493:10.83
top 9.9%201 / 1,261
6×62:00.762:17.42
top 11.3%239 / 1,349
Skewb4.326.31
top 13.1%799 / 5,004
2×22.974.20
top 13.9%2,167 / 15,796
3×3 Fewest Moves30 moves44.33
top 14.8%148 / 1,058
Square-115.1420.25
top 16.8%262 / 1,362
Clock8.419.88
top 17.1%378 / 1,843
3×3 blindfolded1:23.432:37.85
top 20.8%283 / 1,183
3×3 Multi-Blind9 of 13 cubes · 38:21—
early days — 1 solve105 / 278

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

Tianjin Open 2024: 8.88Dandong Yalu River Open 2024: 11.55Malaysia 15th Anniversary Championship 2024: 9.39Guilin Open 2024: 9.51Zhengzhou Open 2024: 9.49Xuzhou Newcomers 2025: 8.51Harbin Open 2025: 8.21Zibo Open 2025: 7.81Guilin Open 2025: 7.99Beijing University Cube League 2025: 7.70Beijing Only 3x3 2025: 8.547.7011.551 Jun 202423 Nov 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-25 4×4 single — 588 people have one; it is 2.99 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.70 away.

Targets move as he improves.