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The Middle Three
People → Hong Kong, China → Jacky Koo Chun Ki (顧俊祺)

People · Hong Kong, China

Jacky Koo Chun Ki (顧俊祺)

Megaminx · top 1.8% of 34,786 all-time · competing since June 2010 · 2010KIKO01

Jacky Koo Chun Ki (顧俊祺) has been competing for 16 years. His best event is the Megaminx: a personal-best single of 40.66, set at Guangdong Open 2018, puts him in the top 1.8% of the 34,786 people who have ever been ranked in the event, and 6th in Hong Kong, China. Until August 2014, no official Megaminx solve in the world had been that fast. Across 36 competitions since June 2010, he has put 1,383 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 13% around a typical one; 59% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 17.59 in June 2010 to 8.60, a 51% improvement. Jacky has entered 36 competitions, more competitions than 99% of everyone who has ever competed.

Megaminx
best event — top 1.8% of 34,786 all-time
40.66
signature single · Guangdong Open 2018
1,383
official solves on the record
13%
solve-to-solve spread · wider than 59% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingHong Kong, China
Megaminx40.6645.65
top 1.8%6 / 154
3×38.6011.20
top 4.0%119 / 1,347
Pyraminx3.114.74
top 4.0%30 / 431
4×435.6144.57
top 7.3%63 / 423
2×22.605.15
top 9.9%125 / 855
Clock7.939.90
top 14.9%45 / 156
5×51:14.631:23.44
top 15.0%68 / 192
Skewb4.616.91
top 15.3%64 / 285
3×3 one-handed21.5826.72
top 24.8%144 / 361
6×62:30.472:47.78
top 25.8%45 / 87
Square-120.6430.39
top 29.3%63 / 126
7×74:15.034:23.04
top 36.1%46 / 74
3×3 Fewest Moves45 moves—
top 65.6%57 / 76

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

Hong Kong Cube Day 2010: 17.59Hong Kong Open 2010: 15.90Guangzhou Winter 2011: 15.08Guangzhou SCAU 2012: 12.31Guangdong Open 2012: 12.41Asian Championship 2012: 9.67Guangdong Open 2013: 12.12Guangzhou Wushan Open 2014: 10.83Back To Cubing Hong Kong 2015: 12.38Hong Kong Summer Cube Day 2015: 11.71China Championship 2015: 12.19Malaysian Cube Open 2015: 11.23Taiwan Cubing League - Kaohsiung 2015: 11.73Shenzhen New Year 2016: 11.85Singapore Rubik's Cube Competition 2016: 11.43All is Well 2016: 11.39Huizhou Open 2016: 12.25Xiamen Open 2016: 10.89Metro Speedcubing Open 2016: 11.91Chongqing Open 2016: 11.88Thailand Championship 2016: 8.60Shantou Open 2016: 10.09Maru Cube Day 2017: 12.16Yangzhou Open 2017: 10.35Hong Kong Open 2017: 11.56Guangdong Open 2018: 10.58Shenzhen Open 2018: 11.55WCA Asian Championship 2018: 9.918.6017.595 Jun 201017 Aug 2018

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-40 Megaminx single — 557 people have one; it is 0.66 away.
  • A sub-8 3×3 single — 7,931 people have one; it is 0.60 away.

Targets move as he improves.