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People → Chinese Taipei → Pei-Yu Ko (柯沛羽)

People · Chinese Taipei

Pei-Yu Ko (柯沛羽)

Pyraminx · top 16.6% of 129,321 all-time · competing since July 2014 · 2014KOPE01

Pei-Yu Ko (柯沛羽) has been competing for 12 years. Her best event is the Pyraminx: a personal-best single of 5.52, set at Taiwan Championship 2025, puts her in the top 16.6% of the 129,321 people who have ever been ranked in the event, and 255th in Chinese Taipei. Across 78 competitions since July 2014, she has put 817 official solves on the record across eight events. Solve to solve, her 3×3 times vary about 13% around a typical one; 51% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. Her 3×3 best has come down from 1:00.18 in July 2014 to 21.18, a 65% improvement. She has entered 78 competitions, more competitions than 99% of everyone who has ever competed.

Pyraminx
best event — top 16.6% of 129,321 all-time
5.52
signature single · Taiwan Championship 2025
817
official solves on the record
13%
solve-to-solve spread · wider than 51% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChinese Taipei
Pyraminx5.527.61
top 16.6%255 / 1,016
3×321.1827.39
top 43.2%2,325 / 4,213
Skewb8.3713.83
top 44.1%398 / 699
Clock15.7519.54
top 50.9%223 / 366
2×28.9513.02
top 73.2%1,431 / 1,669
4×41:50.352:10.90
top 76.9%959 / 1,078
5×53:45.88—
top 89.5%603 / 639
3×3 Fewest Moves59 moves62.67
top 93.5%194 / 204

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

Kaohsiung Summer Open 2014: 1:00.18Taiwan Summer Open 2014: 50.27Kaohsiung Open 2014: 51.16Kaohsiung Winter Open 2015: 47.09All is Well 2015: 48.38Maru Cube for Kids Day 2015: 48.35Taiwan Cubing League - Taipei 2015: 43.67Taiwan Open 2015: 39.98Taiwan Cubing League - Taichung 2015: 50.62Taipei Open 2015: 41.17Taiwan Cubing League - Kaohsiung 2015: 34.71Big Cubes Challenge 2016: 44.55All is Well 2016: 35.09Maru Cube Day 2016: 32.13Happy Cubing Taiwan 2016: 38.88Kaohsiung Open 2016: 41.70Taiwan Championship 2016: 39.25Kaohsiung Winter Open 2016: 40.70Taipei Open 2017: 40.13Maru Cube Day 2017: 39.99Lanyang Open 2017: 36.91Cross-strait Cubing Exchange 2017: 33.32Kaohsiung Autumn Open 2017: 33.21Taiwan Championship 2017: 29.73Japan Open 2017: 35.31Cubing Tainan 2018: 22.52Hsinchu Winter Open 2018: 33.71Kaohsiung Spring Open 2018: 31.03All is Well 2018: 28.26Maru X 2018: 31.32WCA Asian Championship 2018: 32.24Malaysia Cube Championship 2018: 32.53Taichung Cubing Open 2019: 30.07All is Well Tainan 2019: 32.90Maru Cube Day 2019: 31.26Matsu Open 2019: 34.19Lanyang Open 2019: 35.37Malaysia Cube Championship 2019: 32.56Taiwan Championship 2019: 32.05Maru Cube Day 2021: 25.33Taiwan Open 2022: 29.60Maru Cube Day 2022: 30.34Taoyuan Cubing Open 2022: 30.33Taiwan Championship 2022: 27.94Hong Kong Cube Day 2023: 22.73Taiwan Cubing Challenge 2023: 27.12Maru Cube Day 2023: 30.52Rubik's WCA World Championship 2023: 29.01Shin Kong Cube Open 2023: 30.40Taoyuan Airport Cube Day 2023: 29.89Taiwan Championship 2023: 28.39Kaohsiung Winter Open 2024: 28.49Taipei Summer Open 2024: 29.85Maru Cube Day Taiwan 2024: 25.44Shin Kong Cube Open - Taichung 2024: 22.78Shin Kong Cube Open - New Taipei 2024: 26.88Shin Kong Cube Open - Kaohsiung 2024: 27.05Rubik's WCA Asian Championship 2024: 24.07Taoyuan Airport Cube Day 2024: 25.25Taiwan Championship 2024: 23.02Pingtung Winter Open 2025: 30.69Zhongshan Open 2025: 21.18Maru Cube Day Taiwan 2025: 28.81HKRCU 20th Anniversary 2025: 23.87Shin Kong Cube Open - New Taipei 2025: 34.81Shin Kong Cube Open - Taichung 2025: 25.16Shin Kong Cube Open - Kaohsiung 2025: 29.10Taiwan Championship 2025: 26.44Shin Kong Cube Open - Taitung 2025: 28.08Penghu Spring Cube Open 2026: 23.33Maru Cube Day Taiwan 2026: 26.66Shin Kong Cube Open - New Taipei 2026: 26.79Shin Kong Cube Open - Taichung 2026: 29.3521.181:00.185 Jul 201430 Aug 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-5 Pyraminx single — 17,019 people have one; it is 0.52 away.
  • A sub-20 3×3 single — 113,584 people have one; it is 1.18 away.

Targets move as she improves.