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The Middle Three
People → China → Kun Zhu (朱锟)

People · China

Kun Zhu (朱锟)

Square-1 · top 6.3% of 25,272 all-time · competing since October 2012 · 2012ZHUK02

Kun Zhu (朱锟) has been competing for 14 years. His best event is the Square-1: a personal-best single of 10.12, set at Shenzhen Open 2018, puts him in the top 6.3% of the 25,272 people who have ever been ranked in the event, and 88th in China. Until August 2010, no official Square-1 solve in the world had been that fast. Across 58 competitions since October 2012, he has put 943 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 9% around a typical one, steadier than 99% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 20.14 in October 2012 to 12.33, a 39% improvement. Kun has entered 58 competitions, more competitions than 99% of everyone who has ever competed.

Square-1
best event — top 6.3% of 25,272 all-time
10.12
signature single · Shenzhen Open 2018
943
official solves on the record
9%
solve-to-solve spread · steadier than 99% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
Square-110.1214.06
top 6.3%88 / 1,362
4×441.2953.32
top 13.6%1,476 / 5,926
3×312.3313.90
top 15.0%5,904 / 28,153
3×3 one-handed18.5920.60
top 16.6%1,649 / 5,922
5×51:29.771:43.72
top 27.1%1,254 / 2,816
2×24.887.09
top 37.8%6,522 / 15,796
Skewb8.0712.12
top 41.8%2,468 / 5,004
Clock14.6116.05
top 46.4%1,095 / 1,843
Pyraminx9.5411.94
top 49.3%5,200 / 10,224
6×63:32.61—
top 55.7%1,034 / 1,349
7×75:24.46—
early days — 3 solves988 / 1,261
3×3 Fewest Moves43 moves45.00
top 59.0%691 / 1,058
Megaminx2:47.32—
early days — 2 solves1,531 / 1,678
3×3 blindfolded4:58.71—
early days — 1 solve1,078 / 1,183

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

Asian Championship 2012: 20.14Huizhou Open 2014: 15.99Shantou Open 2014: 17.59Guangdong Open 2014: 16.65Yangjiang Open 2015: 14.85Huizhou Open 2015: 13.96Shantou Open 2015: 16.55China Championship 2015: 15.60Shantou Open 2016: 14.50Cross-strait Cubing Exchange 2016: 14.52Asian Championship 2016: 14.81Shenzhen New Year 2017: 16.76Zhuhai Open 2017: 13.77China Championship 2017: 14.89Shantou Open 2017: 13.61China's 10th Anniversary Championship 2017: 15.29Cross-strait Cubing Exchange 2018: 14.53Zhongshan Children's Cube Day 2018: 13.34Dongguan Open 2019: 13.04Dongguan Summer 2019: 12.33Zhongshan NxN Speedcubing 2019: 15.25Shenzhen Good Morning 2020: 15.54Shenzhen Good Afternoon 2021: 14.72Shenzhen Nanshan Afternoon 2021: 13.32Guangdong Open 2021: 13.30Shenzhen Youth Open 2023: 15.48Shenzhen Open 2023: 15.12Huizhou 10th Anniversary 2024: 13.09Zhuhai Pi Day 2026: 13.11Foshan Open 2026: 15.81Liuzhou Open 2026: 13.09Maoming Open 2026: 14.65Zhanjiang Open 2026: 15.5412.3320.145 Oct 20129 Aug 2026

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-10 Square-1 single — 1,533 people have one; it is 0.12 away.
  • A sub-40 4×4 single — 10,180 people have one; it is 1.29 away.

Targets move as he improves.