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The Middle Three
People → Singapore → Mason Zhou (周子瑞)

People · Singapore

Mason Zhou (周子瑞)

2×2 · top 1.5% of 186,767 all-time · competing since June 2022 · 2022ZIRU01

Mason Zhou (周子瑞) has been competing for 4 years. His best event is the 2×2: a personal-best single of 1.35, set at Mofunland Speedcubing Singapore 2024, puts him in the top 1.5% of the 186,767 people who have ever been ranked in the event, and 35th in Singapore. Until November 2008, no official 2×2 solve in the world had been that fast. Across 37 competitions since June 2022, he has put 1,017 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 86% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 18.74 in June 2022 to 7.38, a 61% improvement. Mason has entered 37 competitions, more competitions than 99% of everyone who has ever competed.

2×2
best event — top 1.5% of 186,767 all-time
1.35
signature single · Mofunland Speedcubing Singapore 2024
1,017
official solves on the record
11%
solve-to-solve spread · steadier than 86% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingSingapore
2×21.353.27
top 1.5%35 / 1,053
3×37.389.13
top 1.8%51 / 1,546
Pyraminx2.624.01
top 2.5%34 / 645
Skewb4.527.13
top 14.6%74 / 353
3×3 one-handed17.8721.10
top 14.7%103 / 460
Clock8.8910.90
top 19.4%63 / 178
4×448.2053.15
top 22.4%178 / 462
5×51:31.271:44.40
top 28.3%111 / 251
Square-125.70—
top 40.7%87 / 132
Megaminx2:01.65—
top 46.6%121 / 195
6×63:17.113:51.39
top 49.1%82 / 125
7×76:25.46—
top 73.4%83 / 96
3×3 Fewest Moves51 moves—
early days — 2 solves81 / 94
3×3 blindfolded6:35.10—
early days — 1 solve79 / 81

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

NSW Open 2022: 18.74Singapore Mofun & FIS Cubing 2022: 21.33Singapore Mini 2022: 17.43Batam Revival 2022: 13.57Malaysia Cube Championship 2022: 10.90NTU Welcome 2023: 13.70Singapore Championship 2023: 12.20UTM Speedcubing Open 2023: 10.37Singapore AMK CC Cubing B 2023: 10.58Mofunland Cruise Open 2023: 9.76NTU Speedcubing 2023: 10.84Rubik's WCA World Championship 2023: 10.59Singapore Mini 2023: 9.53Singapore Marine Parade Speedcubing 2023: 8.36Johor Mini 2023: 8.74Malaysia Cube Championship 2023: 9.43Singapore Newcomers 2024: 7.38Singapore Mini 2024: 9.35Singapore 50 and Counting 2024: 8.65Mofunland Speedcubing Singapore 2024: 9.02Rubik's WCA Asian Championship 2024: 10.49Cool Down Singapore 2024: 9.67Taiwan Championship 2024: 8.33Singapore Championship 2025: 7.77Singapore Newcomers 2025: 8.27Singapore Mofunland Cruise 2025: 8.14Singapore Independence Day 2025: 8.97Mofunland Speedcubing Singapore 2025: 8.22Singapore Championship 2026: 8.577.3821.3311 Jun 202220 Feb 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-1 2×2 single — 1,032 people have one; it is 0.35 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.38 away.

Targets move as he improves.