Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → Chinese Taipei → Mu-Cheng Liu (劉牧承)

People · Chinese Taipei

Mu-Cheng Liu (劉牧承)

4×4 · top 0.28% of 83,917 all-time · competing since July 2022 · 2022LIUM02

Mu-Cheng Liu (劉牧承) has been competing for 4 years. His best event is the 4×4: a personal-best single of 22.69, set at Pingtung Winter Open 2025, puts him in the top 0.28% of the 83,917 people who have ever been ranked in the event, and 11th in Chinese Taipei. Until August 2014, no official 4×4 solve in the world had been that fast. Across 50 competitions since July 2022, he has put 1,613 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 15% around a typical one; 81% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 8.41 in July 2022 to 6.64, a 21% improvement. He has entered 50 competitions, more competitions than 99% of everyone who has ever competed.

4×4
best event — top 0.28% of 83,917 all-time
22.69
signature single · Pingtung Winter Open 2025
1,613
official solves on the record
15%
solve-to-solve spread · wider than 81% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChinese Taipei
4×422.6927.50
top 0.28%11 / 1,078
5×544.5648.10
top 0.61%15 / 639
3×36.647.56
top 0.97%50 / 4,213
6×61:27.511:37.37
top 1.5%13 / 292
Clock3.534.38
top 1.6%8 / 366
2×21.543.30
top 2.3%53 / 1,669
7×72:30.022:41.49
top 3.8%26 / 252
Megaminx55.121:00.03
top 7.5%42 / 362
Skewb3.675.99
top 8.8%104 / 699
Pyraminx4.836.07
top 12.1%189 / 1,016
3×3 one-handed18.0719.14
top 15.3%203 / 802
Square-141.50—
early days — 1 solve246 / 323

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

Chiayi Open 2022: 8.41Pingtung Summer Open 2022: 9.00Maru Cube Day 2022: 8.95Taoyuan Cubing Open 2022: 8.18Taiwan Championship 2022: 9.76CK Cubing Party 2023: 7.90Taiwan Cubing Challenge 2023: 8.71New Taipei Open 2023: 8.03Maru Cube Day 2023: 7.46Rubik's WCA World Championship 2023: 6.96Pingtung Summer Open 2023: 8.32Shin Kong Cube Open 2023: 8.54Taoyuan Airport Cube Day 2023: 8.12Taiwan Championship 2023: 8.20Kaohsiung Winter Open 2024: 7.51HCHS Winter Open 2024: 7.57Taichung Open 2024: 7.55Honhui Cubing Carnival 2024: 7.81Zhongshan Open 2024: 7.34Chien Kuo Cubing Party 2024: 7.56Taipei Summer Open 2024: 8.21Philippine Championship 2024: 7.56Maru Cube Day Taiwan 2024: 6.80Hsinchu Summer Open 2024: 7.64Shin Kong Cube Open - Taichung 2024: 7.26Shin Kong Cube Open - New Taipei 2024: 7.79Rubik's WCA Asian Championship 2024: 7.28Taoyuan Airport Cube Day 2024: 7.06Taiwan Championship 2024: 7.94Pingtung Winter Open 2025: 7.44BQHS Spring Open 2025: 7.36Zhongshan Open 2025: 7.48Chien Kuo Cubing Party 2025: 6.77Taipei Summer Open 2025: 6.86Hsinchu Summer Open 2025: 7.61Taoyuan Airport Cube Day 2025: 7.13Taiwan Championship 2025: 6.94Penghu Spring Cube Open 2026: 7.13BQHS Spring Open 2026: 6.64Zhongshan Open 2026: 6.70Taipei Cube Open 2026: 6.81Chien Kuo Cubing Party 2026: 7.58Maru Cube Day Taiwan 2026: 7.23Shin Kong Cube Open - New Taipei 2026: 7.18Shin Kong Cube Open - Taichung 2026: 7.116.649.7623 Jul 202230 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 his.

Next targets

  • A sub-20 4×4 single — 42 people have one; it is 2.69 away.
  • A sub-40 5×5 single — 68 people have one; it is 4.56 away.

Targets move as he improves.