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People · Singapore

Isaac Lai Yin Chung

Megaminx · top 0.18% of 34,786 all-time · competing since February 2015 · 2015LAII01

Isaac Lai Yin Chung has been competing for 12 years. His best event is the Megaminx: a personal-best single of 29.33, set at Oldenburg Oster Open 2025, puts him in the top 0.18% of the 34,786 people who have ever been ranked in the event, and 3rd in Singapore. Until July 2018, no official Megaminx solve in the world had been that fast. Across 49 competitions since February 2015, he has put 2,042 official solves on the record across 16 events. Solve to solve, his 3×3 times vary about 15% around a typical one; 86% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 15.84 in February 2015 to 6.78, a 57% improvement. Isaac has entered 49 competitions, more competitions than 99% of everyone who has ever competed.

Megaminx
best event — top 0.18% of 34,786 all-time
29.33
signature single · Oldenburg Oster Open 2025
2,042
official solves on the record
15%
solve-to-solve spread · wider than 86% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingSingapore
Megaminx29.3331.85
top 0.18%3 / 195
3×36.787.94
top 1.1%34 / 1,546
Skewb1.904.07
top 1.1%9 / 353
4×426.9631.21
top 1.4%20 / 462
2×21.491.99
top 2.1%48 / 1,053
Pyraminx2.663.74
top 2.6%37 / 645
Square-17.9711.88
top 3.0%11 / 132
5×557.531:02.41
top 4.3%27 / 251
3×3 one-handed13.5515.60
top 5.3%44 / 460
3×3 Fewest Moves29 moves29.67
top 12.2%15 / 94
6×62:04.832:10.11
top 13.1%34 / 125
3×3 blindfolded1:04.031:25.32
top 14.4%19 / 81
Clock8.159.76
top 16.0%53 / 178
7×73:23.733:38.38
top 17.6%33 / 96
3×3 Multi-Blind6 of 6 cubes · 45:42—
early days — 1 solve13 / 35
4×4 blindfolded8:16.60—
early days — 2 solves12 / 17

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

Singapore Rubik's Cube Competition 2015: 15.84Singapore Rubik's Cube Competition 2016: 10.28Singapore Cubewerkz Open 2016: 10.13Singapore 333 Cube Competition 2016: 8.84Singapore Rubik's Cube Competition 2017: 9.13Singapore Cube Championship 2018: 8.71NTU Open 2019: 9.03Selangor Cube Open 2019: 7.44Singapore Mofun & FIS Cubing 2022: 8.81Petaling Jaya Cubing Comeback 2022: 8.98Rubik's WCA European Championship 2022: 8.95Singapore Mini 2022: 8.43Malaysia Cube Championship 2022: 7.21NTU Welcome 2023: 7.99Singapore Championship 2023: 8.45UoSM Cube Day 2023: 8.30Selangor Ace Cube 2023: 6.94NTU Speedcubing 2023: 7.02Rubik's WCA World Championship 2023: 7.86Stulang Cube Party 2023: 7.99Singapore Mini 2023: 8.56MYHM Singapore Championship 2024: 8.25Singapore Mini 2024: 8.27Singapore Hougang Open 2024: 8.19Singapore Freeze 2024: 7.53Leersum Squared 2025: 6.78Hasselt Saturday Open 2025: 8.15Oldenburg Oster Open 2025: 8.14French Championship 2025: 6.846.7815.8414 Feb 201519 Apr 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-25 Megaminx single — 8 people have one; it is 4.33 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 0.78 away.

Targets move as he improves.