Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → China → Kaijun Lin (林恺俊)

People · China

Kaijun Lin (林恺俊)

4×4 blindfolded · top 0.23% of 2,174 all-time · competing since May 2013 · 2013LINK01

Kaijun Lin (林恺俊) has been competing for 13 years. His best event is the 4×4 blindfolded: a personal-best single of 1:09.98, set at Please Be Quiet Bukit Jalil 2023, puts him in the top 0.23% of the 2,174 people who have ever been ranked in the event, and 1st in China. Until July 2019, no official 4×4 blindfolded solve in the world had been that fast. Across 110 competitions since May 2013, he has put 2,309 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 76% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 9.94 in May 2013 to 5.91, a 41% improvement. Kaijun has entered 110 competitions, more competitions than 99% of everyone who has ever competed.

4×4 blindfolded
best event — top 0.23% of 2,174 all-time
1:09.98
signature single · Please Be Quiet Bukit Jalil 2023
2,309
official solves on the record
12%
solve-to-solve spread · steadier than 76% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
4×4 blindfolded1:09.981:20.08
top 0.23%1 / 149
5×5 blindfolded2:39.122:49.17
top 0.35%1 / 95
3×3 blindfolded16.0918.40
top 0.39%5 / 1,183
3×35.917.47
top 0.44%170 / 28,153
3×3 Multi-Blind30 of 30 cubes · 54:11—
top 1.5%3 / 278
2×21.472.98
top 2.0%234 / 15,796
3×3 one-handed11.7613.37
top 2.7%231 / 5,922
Pyraminx2.863.95
top 3.2%370 / 10,224
4×443.5445.46
top 16.5%1,778 / 5,926
5×51:20.751:31.88
top 19.7%935 / 2,816
Megaminx1:40.971:56.93
top 35.1%1,040 / 1,678
3×3 Fewest Moves38 moves41.33
early days — 3 solves459 / 1,058

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

Guangzhou Rubik's Cube Day 2013: 9.94Guangzhou CCSA Championship 2013: 8.15Hefei Open 2013: 8.58Guangdong Open 2013: 8.79Guangzhou Small Cubes 2014: 8.99Guangzhou Wushan Open 2014: 8.81Cross-strait Cubing Exchange 2014: 9.21Guangdong Open 2014: 6.13Guangzhou New Year's Cube Day 2015: 8.30Guangzhou More Fun Site 2015: 8.60Wenzhou Open 2015: 8.05Cube of Prime Numbers 2015: 7.90Fuzhou Open 2015: 6.93Guangzhou SYSU Open 2015: 8.15Shenzhen Open 2015: 8.04Hefei Open 2015: 8.93China Championship 2015: 7.88Nanchang Winter 2015: 7.38Xi'an New Year 2016: 8.34Guangzhou Rubik's Cube Days 2016: 7.75Huizhou Open 2016: 8.26Nanjing Spring 2016: 7.60One Night in Beijing 2016: 7.71Cube of Odd Numbers 2016: 7.31Hefei Open 2016: 7.37Cross-strait Cubing Exchange 2016: 7.68Asian Championship 2016: 7.97TKK Open 2016: 6.82Shanghai Winter is Coming 2016: 7.93Xi'an New Year 2017: 7.65Dongguan Open 2017: 7.81Wuhan Chuyun Spring 2017: 6.72ZUA Open 2017: 8.68Xi'an Cherry Blossom 2017: 7.84Nanchang Spring 2017: 7.15Nanjing Spring 2017: 7.39Wuhan NxN Open 2017: 6.61Zhuhai Open 2017: 6.48ZUST Open 2017: 7.42Beijing Open 2017: 7.27Quanzhou Open 2017: 6.91China Championship 2017: 6.41Inner Mongolia Summer 2017: 7.23Yangzhou Open 2017: 6.87Beijing Ten Years Open 2017: 7.53China's 10th Anniversary Championship 2017: 6.15Hefei Open 2017: 5.91Xiamen Autumn 2017: 6.06Guilin Open 2017: 6.94Nanjing Autumn 2017: 7.04Nanchang Open 2017: 6.21WHU Rubik's Cube Days 2017: 6.80Dalian Winter 2017: 6.44Heilongjiang Colleges Open 2017: 7.51Chongqing Open 2017: 7.50Singapore Cube Championship 2018: 6.72Jakarta Mini Open 2018: 7.37Hangzhou Spring 2018: 7.61GDSY Open 2018: 7.06Kansai Open 2018: 7.12Cross-strait Cubing Exchange 2018: 6.53Guangdong Open 2018: 6.83YJ Fest 2018: 7.07Shenzhen Open 2018: 7.16Jieyang Open 2018: 7.86Philippine Championship 2018: 6.73China Championship 2018: 7.03Hangzhou Open 2018: 6.95Wuhu Open 2018: 6.59Shenzhen 3x3 Days 2019: 6.43Weihai Open 2019: 7.81Hefei Summer 2019: 7.22WCA World Championship 2019: 7.11China Championship 2019: 7.45Xi'an 10th Anniversary 2019: 7.46Shandong Open 2019: 7.13Thailand Championship 2019: 6.59Selangor Cube Open 2019: 6.09Nanchang Good Afternoon 2021: 6.81Guangdong Open 2021: 7.08Guilin Open 2021: 6.87Tianjin Summer Solstice 2021: 9.46Rubik's WCA Asian Championship 2024: 7.77Guangdong Open - Revival & Rival 2026: 9.295.919.941 May 20136 Feb 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-1:00 4×4 blindfolded single — 1 people have one; it is 9.98 away.
  • A sub-2:00 5×5 blindfolded single — 1 people have one; it is 39.12 away.

Targets move as he improves.