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People → China → Zijian Cai (蔡子健)

People · China

Zijian Cai (蔡子健)

3×3 · top 0.019% of 288,433 all-time · competing since July 2017 · 2017CAIZ03

Zijian Cai (蔡子健) has been competing for 9 years. His best event is the 3×3: a personal-best single of 4.12, set at Nanchang Summer 2026, puts him in the top 0.019% of the 288,433 people who have ever been ranked in the event, and 18th in China. Until November 2018, no official 3×3 solve in the world had been that fast. Across 72 competitions since July 2017, he has put 3,842 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 56% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 10.48 in July 2017 to 4.12, a 61% improvement. Zijian has entered 72 competitions, more competitions than 99% of everyone who has ever competed.

3×3
best event — top 0.019% of 288,433 all-time
4.12
signature single · Nanchang Summer 2026
3,842
official solves on the record
13%
solve-to-solve spread · steadier than 56% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
3×34.125.84
top 0.019%18 / 28,499
4×418.8222.42
top 0.022%4 / 5,999
5×537.4243.99
top 0.06%3 / 2,857
2×20.691.57
top 0.11%14 / 15,939
Skewb1.222.95
top 0.14%7 / 5,030
3×3 one-handed7.779.84
top 0.17%12 / 5,994
Megaminx31.4134.94
top 0.33%6 / 1,693
Pyraminx1.492.32
top 0.41%42 / 10,269
Square-16.5010.32
top 1.2%19 / 1,373
6×61:25.621:30.22
top 1.2%22 / 1,363
7×72:18.092:27.09
top 2.1%36 / 1,274
3×3 Fewest Moves26 moves30.33
top 6.3%61 / 1,071
Clock6.416.96
top 8.7%196 / 1,887

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

Longyan Summer Open 2017: 10.48China's 10th Anniversary Championship 2017: 8.80Shenzhen Open 2017: 9.44Shenzhen Open 2018: 8.01Nanning Open 2018: 7.64Zhongshan NxN Speedcubing 2018: 6.00Dongguan Mid-Autumn Festival 2018: 6.34Shenzhen Nanshan 2018: 7.31Yangjiang Open 2019: 7.19Jieyang Winter 2019: 6.86Shenzhen 3x3 Days 2019: 6.30GDSY Open 2019: 7.28Dongguan Spring 2019: 6.92Zhongshan Children's Cube Day 2019: 6.09China Championship 2019: 6.51Jieyang Open 2019: 6.37Shenzhen Cubing 10th Anniversary 2019: 6.60Shenzhen Open 2019: 6.82Zhongshan NxN Speedcubing 2019: 5.50Jieyang Winter 2020: 6.20Shenzhen Good Morning 2020: 5.83Shenzhen Good Afternoon 2021: 5.39Guangzhou Panyu Morning 2021: 5.99Singapore Championship 2023: 5.71Shenzhen Youth Open 2023: 5.35Shenzhen Open 2023: 4.92Shenzhen Nanshan Open 2024: 5.84Deqing Big Cubes Summer 2024: 5.76Rubik's WCA Asian Championship 2024: 5.23Hong Kong Championship 2024: 5.48Shenzhen Open 2024: 5.50Xi'an New Year 2025: 5.72Chongqing New Year 2025: 5.19Xi'an Cherry Blossom 2025: 5.48gateway KLIA2 Cube Open 2025: 4.59Hong Kong Cube Day 2025: 5.87Zhuhai Open 2025: 5.25Vietnam Championship 2025: 5.71Jiangmen Open 2025: 5.61Guilin Open 2025: 5.72Guangzhou Small Cubes 2025: 5.46Hong Kong Championship 2025: 4.96Zhengzhou Zest 2025: 5.82Guangdong Open - Revival & Rival 2026: 5.45XMUM Cube Open 2026: 5.16Zhuhai Pi Day 2026: 5.68Singapore Skewby March 2026: 5.26Foshan Open 2026: 5.08Huanggang Open 2026: 5.41Zhangzhou Open 2026: 6.10Nanchang Summer 2026: 4.12Selangor Cube Open 2026: 5.57Guangzhou GraDUAL 3x3 II 2026: 5.33Beihai Open 2026: 5.47Nanning Open 2026: 5.27Paradise Place Thailand Cube Open 2026: 5.28Guangzhou GraDUAL 3x3 III 2026: 4.89Guangzhou GraDUAL 3x3 IV 2026: 5.57Guangzhou Grand Open 2026: 5.95Guilin Open 2026: 5.404.1210.489 Jul 201718 Oct 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-4 3×3 single — 41 people have one; it is 0.12 away.
  • A sub-30 5×5 single — 1 people have one; it is 7.42 away.

Targets move as he improves.