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People · United Kingdom

Marcus Siu

2×2 · top 1.2% of 186,767 all-time · competing since April 2016 · 2016SIUM01

Marcus Siu has been competing for 10 years. His best event is the 2×2: a personal-best single of 1.25, set at Edinburgh Winter 2026, puts him in the top 1.2% of the 186,767 people who have ever been ranked in the event, and 96th in the United Kingdom. Until November 2008, no official 2×2 solve in the world had been that fast. Across 48 competitions since April 2016, he has put 3,354 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 63% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 15.10 in April 2016 to 7.27, a 52% improvement. Marcus has entered 48 competitions, more competitions than 99% of everyone who has ever competed.

2×2
best event — top 1.2% of 186,767 all-time
1.25
signature single · Edinburgh Winter 2026
3,354
official solves on the record
12%
solve-to-solve spread · steadier than 63% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingUnited Kingdom
2×21.252.63
top 1.2%96 / 4,895
Square-16.698.82
top 1.3%14 / 778
Pyraminx2.213.50
top 1.5%62 / 3,656
3×37.278.62
top 1.7%123 / 6,689
Skewb2.194.30
top 1.9%46 / 2,421
4×429.8334.50
top 2.8%66 / 2,071
3×3 one-handed11.8814.28
top 2.8%54 / 1,851
5×556.931:00.84
top 4.1%57 / 1,151
6×61:51.911:55.41
top 7.9%52 / 548
Megaminx59.711:07.89
top 9.8%126 / 966
7×72:58.253:03.58
top 10.1%48 / 459
Clock6.858.77
top 10.4%135 / 1,232
3×3 Fewest Moves29 moves35.67
top 12.2%55 / 372

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

North London Open 2016: 15.10Guildford Open 2016: 15.76August Bank Holiday Competition 2017: 13.73Guildford Open 2017: 11.27UK Championship 2017: 10.39Guildford Open 2018: 10.69High Wycombe Open 2018: 10.15August Bank Holiday Competition 2018: 9.25UK Championship 2018: 9.93British Summer Open 2019: 9.38August Bank Holiday Celebration 2019: 8.91UK Championship 2019: 8.51Guildford Open 2020: 8.57Doncaster Open 2020: 8.59Wakefield Open 2022: 8.15Stevenage Spring 2022: 8.50Glasgow Open 2022: 8.97Rubik's WCA European Championship 2022: 9.35Lincoln Summer 2022: 8.59Stevenage Autumn A 2022: 8.24Chippenham Autumn 2022: 8.39Kewbz UK Championship 2022: 9.14Essex Winter 2022: 7.87UK New Year Countdown 2023: 8.43Glasgow Winter 2023: 8.02Peterborough Summer 2023: 8.14Suffolk Summer 2023: 8.55Stevenage July 2023: 8.34Glasgow Autumn 2023: 7.79Polish Championship 2023: 9.34Rubik's UK Championship 2023: 8.36Stevenage April 2024: 7.84Chichester Summer 2024: 8.30Stevenage August 2024: 7.27Rubik's UK Championship 2024: 7.89Manchester Spring 2025: 7.48Portugal Championship 2025: 8.32Edinburgh Winter 2026: 7.92Kewbz UK Championship 2026: 7.917.2715.7630 Apr 201628 Aug 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 0.25 away.
  • A sub-6 Square-1 single — 201 people have one; it is 0.69 away.

Targets move as he improves.