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The Middle Three
People → Chinese Taipei → Bo-Yu Cai (蔡博宇)

People · Chinese Taipei

Bo-Yu Cai (蔡博宇)

2×2 · top 10.4% of 189,179 all-time · competing since December 2021 · 2021CAIB01

Bo-Yu Cai (蔡博宇) has been competing for 5 years. His best event is the 2×2: a personal-best single of 2.64, set at Maru Cube Day 2022, puts him in the top 10.4% of the 189,179 people who have ever been ranked in the event, and 286th in Chinese Taipei. Across 5 competitions since December 2021, he has put 84 official solves on the record across five events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 80% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 14.12 in December 2021 to 12.65, a 10% improvement. He has entered five competitions, more competitions than 83% of everyone who has ever competed.

2×2
best event — top 10.4% of 189,179 all-time
2.64
signature single · Maru Cube Day 2022
84
official solves on the record
12%
solve-to-solve spread · steadier than 80% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChinese Taipei
2×22.644.20
top 10.4%286 / 1,671
3×312.6514.12
top 16.3%997 / 4,369
4×444.32—
early days — 3 solves378 / 1,079
Pyraminx6.797.09
top 26.2%375 / 1,017
3×3 blindfolded4:03.54—
early days — 3 solves114 / 149

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

Maru Cube Day 2021: 14.12Maru Cube Day 2022: 13.91Maru Cube Day 2023: 12.65Pingtung Summer Open 2023: 12.71Maru Cube Day Taiwan 2025: 12.9312.6514.1211 Dec 20212 Aug 2025

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-2 2×2 single — 9,039 people have one; it is 0.64 away.
  • A sub-12 3×3 single — 40,277 people have one; it is 0.65 away.

Targets move as he improves.