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People → Chinese Taipei → Rui-Jun Liu (劉睿鈞)

People · Chinese Taipei

Rui-Jun Liu (劉睿鈞)

4×4 · top 2.1% of 83,917 all-time · competing since October 2011 · 2011LIUR02

Rui-Jun Liu (劉睿鈞) has been competing for 15 years. His best event is the 4×4: a personal-best single of 28.70, set at Mill Creek 2023, puts him in the top 2.1% of the 83,917 people who have ever been ranked in the event, and 57th in Chinese Taipei. Until April 2012, no official 4×4 solve in the world had been that fast. Across 132 competitions since October 2011, he has put 5,937 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 10% around a typical one, steadier than 96% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 16.33 in October 2011 to 7.66, a 53% improvement. He has entered 132 competitions, more competitions than 99% of everyone who has ever competed.

4×4
best event — top 2.1% of 83,917 all-time
28.70
signature single · Mill Creek 2023
5,937
official solves on the record
10%
solve-to-solve spread · steadier than 96% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChinese Taipei
4×428.7032.96
top 2.1%57 / 1,078
3×37.669.41
top 2.2%130 / 4,213
Square-17.639.32
top 2.5%9 / 323
5×554.071:00.58
top 3.1%51 / 639
Pyraminx3.084.99
top 3.9%56 / 1,016
2×21.963.68
top 4.5%116 / 1,669
3×3 one-handed13.0517.17
top 4.5%55 / 802
7×72:48.043:01.40
top 7.3%38 / 252
3×3 Fewest Moves27 moves33.00
top 8.0%11 / 204
6×61:53.342:01.47
top 8.5%44 / 292
Skewb3.765.90
top 9.3%111 / 699
Megaminx1:03.251:11.65
top 11.7%63 / 362
Clock8.9112.72
top 19.6%79 / 366

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

Taipei Open 2011: 16.33Taiwan Winter 2012: 15.06Taiwan Summer Open 2012: 15.17Magic Revenge 2012: 12.40Taiwan Winter Open 2013: 13.73MARU Cube for kid Day 2013: 12.89Taiwan Summer Open 2013: 12.57Hsinchu Winter Open 2013: 10.07Maru Cube for Kids Day 2014: 12.61Hsinchu Spring Open 2014: 10.16Taiwan Summer Open 2014: 11.30Cross-strait Cubing Exchange 2014: 12.68Master Challenge 2014: 12.15Hsinchu Winter Open 2014: 12.03Kaohsiung Open 2014: 11.28Kaohsiung Winter Open 2015: 9.88All is Well 2015: 11.86Maru Cube for Kids Day 2015: 11.17Show Off Quickness 2015: 11.34Hsinchu Spring Open 2015: 10.97Taiwan Cubing League - Taipei 2015: 12.29Taiwan Open 2015: 10.81Hsinchu Summer Open 2015: 12.09Magic Revenge 2015: 9.59Taiwan Cubing League - Taichung 2015: 9.98Taipei Open 2015: 10.04Taiwan Cubing League - Kaohsiung 2015: 10.25Hsinchu Winter Open 2016: 10.88Big Cubes Challenge 2016: 10.61All is Well 2016: 10.45Taichung Cube Open 2016: 10.17Maru Cube Day 2016: 10.15Happy Cubing Taiwan 2016: 10.41JRCA Kansai Summer 2016: 9.08Cube Camp in Kanazawa 2016: 9.93Cross-strait Cubing Exchange 2016: 10.83Yangzhou Open 2016: 9.53Arnold Classic Asia 2016: 9.55Kaohsiung Open 2016: 11.16Taiwan Championship 2016: 9.61Kaohsiung Winter Open 2016: 9.63Taipei Open 2017: 10.27All is Well 2017: 9.40Kaohsiung Summer Open 2017: 8.42Quanzhou Open 2017: 9.93London Open 2017: 10.59World Rubik's Cube Championship 2017: 9.18Lanyang Open 2017: 9.18Cross-strait Cubing Exchange 2017: 9.52Yangzhou Open 2017: 9.42Kaohsiung Autumn Open 2017: 9.55China's 10th Anniversary Championship 2017: 8.90Taiwan Championship 2017: 9.78Hsinchu Winter Open 2018: 9.76Johor Cube Open 2018: 10.02Kaohsiung Spring Open 2018: 9.54Cross-strait Cubing Exchange 2018: 9.83All is Well 2018: 8.23Beijing Open 2018: 9.03CK Cubing Party 2018: 8.15Medan All Events 2018: 9.05WCA Asian Championship 2018: 8.25Kaohsiung Autumn Open 2018: 9.51Cutory Autumn Open 2018: 9.96Taipei Winter Open 2018: 9.31Taiwan Championship 2018: 8.09Taipei Peace Open 2019: 9.52Taichung Cubing Open 2019: 10.85Warm Up Sydney 2019: 9.59WCA World Championship 2019: 9.06Taiwan Championship 2020: 9.85Maru Cube Day 2021: 9.49Welcome Back Taipei 2021: 8.23Taiwan Open 2022: 9.43Kaohsiung Winter Open 2022: 8.69Chiayi Open 2022: 9.02YJ Malaysia Cube Open 2022: 7.66Taoyuan Cubing Open 2022: 9.87Yunlin Winter Open 2022: 9.79Taiwan Championship 2022: 9.19Singapore Championship 2023: 8.33CK Cubing Party 2023: 9.05Mill Creek 2023: 9.31Taiwan Cubing Challenge 2023: 10.58Just 3x3: Old Shanghai Edition 2023: 9.33Maru Cube Day 2023: 8.03Rubik's WCA World Championship 2023: 8.66Shin Kong Cube Open 2023: 9.09Taoyuan Airport Cube Day 2023: 9.08Taiwan Championship 2023: 8.99NxN in Hanoi 2024: 9.06Chien Kuo Cubing Party 2024: 9.39Taipei Summer Open 2024: 8.85Valenzuela Cubing Open 2024: 8.64Laguna Speedcubing Open V 2024: 8.36Hsinchu Summer Open 2024: 9.26Cambodia Championship 2024: 8.76Laos Championship 2024: 8.57Shin Kong Cube Open - New Taipei 2024: 9.78Rubik's WCA Asian Championship 2024: 9.09Taiwan Championship 2024: 9.35Pingtung Winter Open 2025: 8.72MYHM Zeer Rangsit Cubing 2025: 9.24Chien Kuo Cubing Party 2025: 8.48gateway KLIA2 Cube Open 2025: 9.46Zhuhai Open 2025: 9.50Rubik's WCA World Championship 2025: 10.94Tokyo Summer 2025: 8.99HKRCU 20th Anniversary 2025: 9.89Taoyuan Airport Cube Day 2025: 8.73Taiwan Championship 2025: 9.69Penghu Spring Cube Open 2026: 8.79Rubik's WCA European Championship 2026: 8.787.6616.338 Oct 201116 Jul 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-25 4×4 single — 588 people have one; it is 3.70 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.66 away.

Targets move as he improves.