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People → China → Kam Chor Kin (甘楚健)

People · China

Kam Chor Kin (甘楚健)

7×7 · top 3.1% of 14,226 all-time · competing since October 2008 · 2008GANC02

Kam Chor Kin (甘楚健) has been competing for 18 years. His best event is the 7×7: a personal-best single of 2:26.01, set at Guangzhou Big Cubes 2024, puts him in the top 3.1% of the 14,226 people who have ever been ranked in the event, and 58th in China. Until July 2015, no official 7×7 solve in the world had been that fast. Across 39 competitions since October 2008, he has put 1,134 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 84% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 27.38 in October 2008 to 9.46, a 65% improvement. Kam has entered 39 competitions, more competitions than 99% of everyone who has ever competed.

7×7
best event — top 3.1% of 14,226 all-time
2:26.01
signature single · Guangzhou Big Cubes 2024
1,134
official solves on the record
11%
solve-to-solve spread · steadier than 84% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
7×72:26.012:31.35
top 3.1%58 / 1,261
5×554.361:04.59
top 3.1%142 / 2,816
6×61:42.241:46.38
top 4.6%94 / 1,349
3×39.4610.61
top 6.0%2,317 / 28,153
2×22.434.51
top 8.2%1,205 / 15,796
4×437.1542.40
top 8.9%920 / 5,926
3×3 Fewest Moves32 moves40.67
top 20.4%216 / 1,058
3×3 one-handed29.0834.95
top 44.5%3,974 / 5,922
Clock23.1829.42
top 72.9%1,555 / 1,843
Pyraminx14.8415.46
top 81.2%8,032 / 10,224

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

Guangdong Open 2008: 27.38Guangdong Open 2009: 13.75Hunan Open 2010: 11.78Guangdong Open 2010: 12.68Guangzhou Small Cubes 2010: 10.84XinXiang Spring Festival Open 2011: 10.90One-to-eight Cubes Competition 2011: 11.72Shenzhen University 2011: 10.59Xiamen Open 2011: 12.84Guangzhou Summer Vacation 2011: 13.08Suzhou Open 2011: 11.66Guangdong Open 2012: 12.53Guangzhou Rubik's Cube Day 2013: 12.34Guangzhou CCSA Championship 2013: 10.27Guangzhou Small Cubes 2014: 9.46Guangdong Open 2014: 11.19Maoming Open 2017: 9.66China Championship 2017: 10.84Quanzhou Side Event 2017: 11.41China's 10th Anniversary Championship 2017: 9.55Hefei Open 2017: 11.13Nanchang Open 2017: 10.80Cross-strait Cubing Exchange 2018: 9.85Shenzhen Open 2018: 9.88Jieyang Open 2018: 10.24China Championship 2019: 9.659.4627.381 Oct 200826 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-2:00 7×7 single — 83 people have one; it is 26.01 away.
  • A sub-50 5×5 single — 713 people have one; it is 4.36 away.

Targets move as he improves.