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The Middle Three
People → Hong Kong, China → Lam Yu Ching (林雨晴)

People · Hong Kong, China

Lam Yu Ching (林雨晴)

Pyraminx · top 2.3% of 129,321 all-time · competing since October 2012 · 2012CHIN04

Lam Yu Ching (林雨晴) has been competing for 14 years. Her best event is the Pyraminx: a personal-best single of 2.54, set at Sydney Open 2019, puts her in the top 2.3% of the 129,321 people who have ever been ranked in the event, and 18th in Hong Kong, China. Until January 2011, no official Pyraminx solve in the world had been that fast. Across 47 competitions since October 2012, she has put 1,086 official solves on the record across 13 events. Solve to solve, her 3×3 times vary about 11% around a typical one, steadier than 88% of the 35,811 competitors with ten or more counted rounds. Her 3×3 best has come down from 27.47 in October 2012 to 10.63, a 61% improvement. Lam has entered 47 competitions, more competitions than 99% of everyone who has ever competed.

Pyraminx
best event — top 2.3% of 129,321 all-time
2.54
signature single · Sydney Open 2019
1,086
official solves on the record
11%
solve-to-solve spread · steadier than 88% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingHong Kong, China
Pyraminx2.545.54
top 2.3%18 / 431
3×310.6312.82
top 9.4%223 / 1,347
Skewb4.326.88
top 13.1%54 / 285
4×441.9846.52
top 14.5%110 / 423
3×3 one-handed19.2825.16
top 18.6%116 / 361
3×3 Fewest Moves33 moves36.33
top 23.4%32 / 76
5×51:30.121:41.39
top 27.4%96 / 192
Clock10.5312.53
top 27.6%67 / 156
Square-121.9227.77
top 32.3%69 / 126
2×24.535.53
top 33.3%386 / 855
Megaminx1:51.232:02.92
top 41.1%96 / 154
6×63:19.063:25.27
top 50.1%68 / 87
7×76:19.45—
early days — 1 solve64 / 74

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: 27.47Guangdong Open 2014: 19.10Guangzhou SYSU Open 2015: 16.13Shenzhen Open 2015: 15.52Yangjiang Open 2015: 16.31Shantou Open 2015: 15.75Nanjing Spring 2016: 14.37Shanghai Songjiang Open 2016: 15.89Fuzhou Open 2016: 12.73Suzhou Open 2016: 14.48Nanchang Open 2016: 15.19Jinhua Open 2016: 14.20Musée suisse du jeu 2016: 14.54Cité des Jeux 2016: 13.68Xi'an Cherry Blossom 2017: 13.36Nanchang Spring 2017: 13.61Chengdu Open 2017: 12.24Nanning Open 2017: 12.40Fuzhou Open 2017: 12.45China Championship 2017: 13.76Cross-strait Cubing Exchange 2017: 12.71Shantou Open 2017: 13.18Hong Kong Open 2017: 13.48Yunnan Open 2017: 12.92Nanchang Open 2017: 12.64WHU Rubik's Cube Days 2017: 13.34Shenzhen Open 2017: 14.92Canberra Autumn 2018: 13.46Brisbane Winter 2018: 12.41Warm Up Sydney 2018: 12.94Australian Nationals 2018: 11.91Dongguan Open 2019: 12.89Hong Kong Cube Day 2019: 14.14WCA World Championship 2019: 14.67Gold Coast Spring 2019: 11.04Sydney Open 2019: 14.23 Shenzhen Good Afternoon 2020: 13.09Guangdong Open 2021: 12.83Hong Kong Cube Day 2023: 15.11Welcome Back Hong Kong 2024: 13.37Jiangmen Open 2025: 12.50Hong Kong Championship 2025: 12.14Guangdong Open - Revival & Rival 2026: 12.68Foshan Open 2026: 10.6310.6327.475 Oct 20122 May 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 her.

Next targets

  • A sub-2 Pyraminx single — 1,476 people have one; it is 0.54 away.
  • A sub-10 3×3 single — 21,172 people have one; it is 0.63 away.

Targets move as she improves.