Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → Hong Kong, China → Chu Yiu On (朱耀安)

People · Hong Kong, China

Chu Yiu On (朱耀安)

3×3 Multi-Blind · top 2.6% of 4,268 all-time · competing since January 2019 · 2019ONCH01

Chu Yiu On (朱耀安) has been competing for 8 years. His best event is the 3×3 Multi-Blind: a personal-best single of 27 of 29 cubes · 56:36, set at Hong Kong Blind Legends 2024, puts him in the top 2.6% of the 4,268 people who have ever been ranked in the event, and 1st in Hong Kong, China. Across 29 competitions since January 2019, he has put 324 official solves on the record across nine events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 76% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 17.96 in January 2019 to 10.38, a 42% improvement. Chu has entered 29 competitions, more competitions than 98% of everyone who has ever competed.

3×3 Multi-Blind
best event — top 2.6% of 4,268 all-time
27 of 29 cubes · 56:36
signature single · Hong Kong Blind Legends 2024
324
official solves on the record
12%
solve-to-solve spread · steadier than 76% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingHong Kong, China
3×3 Multi-Blind27 of 29 cubes · 56:36—
top 2.6%1 / 25
3×3 blindfolded27.3635.86
top 3.5%5 / 65
3×310.3813.19
top 8.6%207 / 1,347
2×23.515.75
top 20.3%239 / 855
4×447.1555.29
top 21.0%150 / 423
4×4 blindfolded6:28.109:47.38
top 32.8%6 / 15
5×5 blindfolded19:59.00—
early days — 3 solves5 / 7
Clock20.61—
early days — 1 solve132 / 156
Megaminx2:56.20—
early days — 1 solve138 / 154

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

Hong Kong Cube Day 2019: 17.96Wakefield Open 2022: 12.83Farnworth Spring D 2022: 11.47August Bank Holiday Cheltenham 2022: 10.38Droitwich Spa Autumn 2022: 12.01Kewbz UK Championship 2022: 11.06UK New Year Countdown 2023: 12.72Wakefield Spring 2023: 11.64Lincolnshire Summer 2023: 12.64Hong Kong Championship 2023: 12.26MYHM Singapore Championship 2024: 13.35Rubik's WCA Asian Championship 2024: 10.40Hong Kong Championship 2024: 21.2910.3821.2926 Jan 201916 Nov 2024

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 3×3 blindfolded single — 355 people have one; it is 2.36 away.
  • A sub-10 3×3 single — 21,172 people have one; it is 0.38 away.

Targets move as he improves.