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People → Chinese Taipei → Yu-Chih Chuang (莊雨直)

People · Chinese Taipei

Yu-Chih Chuang (莊雨直)

4×4 · top 1.9% of 83,917 all-time · competing since June 2023 · 2023CHUA06

Yu-Chih Chuang (莊雨直) has been competing for 3 years. His best event is the 4×4: a personal-best single of 28.29, set at Taiwan Championship 2025, puts him in the top 1.9% of the 83,917 people who have ever been ranked in the event, and 51st in Chinese Taipei. Until April 2012, no official 4×4 solve in the world had been that fast. Across 14 competitions since June 2023, he has put 405 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 81% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 13.23 in June 2023 to 8.22, a 38% improvement. He has entered 14 competitions, more competitions than 95% of everyone who has ever competed.

4×4
best event — top 1.9% of 83,917 all-time
28.29
signature single · Taiwan Championship 2025
405
official solves on the record
12%
solve-to-solve spread · steadier than 81% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChinese Taipei
4×428.2934.53
top 1.9%51 / 1,078
5×553.1458.52
top 2.7%47 / 639
3×38.229.30
top 3.2%177 / 4,213
Square-19.0018.44
top 4.5%20 / 323
Megaminx56.941:02.37
top 8.4%49 / 362
Pyraminx4.385.99
top 9.6%148 / 1,016
2×22.613.11
top 10.0%277 / 1,669
6×62:00.652:03.41
top 11.2%65 / 292
3×3 one-handed17.0320.50
top 12.6%172 / 802
Skewb5.607.34
top 22.7%228 / 699
Clock11.8815.17
top 34.3%159 / 366
7×74:22.59—
early days — 1 solve151 / 252

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

Taiwan Cubing Challenge 2023: 13.23Shin Kong Cube Open 2023: 10.78Taiwan Championship 2023: 10.23Kaohsiung Winter Open 2024: 9.11Taichung Open 2024: 10.10Taipei Summer Open 2024: 8.65Hsinchu Summer Open 2024: 10.00Taiwan Championship 2024: 8.66Chien Kuo Cubing Party 2025: 9.01Rubik's WCA World Championship 2025: 8.22Taiwan Championship 2025: 8.36Chien Kuo Cubing Party 2026: 8.258.2213.2318 Jun 202318 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 3.29 away.
  • A sub-50 5×5 single — 713 people have one; it is 3.14 away.

Targets move as he improves.