People · Hong Kong, China
Andy Guo (郭茂成)
3×3 · top 3.6% of 284,439 all-time · competing since July 2019 · 2019GUOA01
Andy Guo (郭茂成) has been competing for 7 years. His best event is the 3×3: a personal-best single of 8.44, set at BC Championship 2026, puts him in the top 3.6% of the 284,439 people who have ever been ranked in the event, and 108th in Hong Kong, China. Until July 2008, no official 3×3 solve in the world had been that fast. Across 14 competitions since July 2019, he has put 327 official solves on the record across six events. Solve to solve, his 3×3 times vary about 13% around a typical one; 55% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 27.09 in July 2019 to 8.44, a 69% improvement. Andy has entered 14 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Hong Kong, China | |
|---|---|---|---|---|---|
| 3×3 | 8.44 | 9.65 | top 3.6% | 108 / 1,347 | |
| Pyraminx | 4.05 | 8.25 | top 7.9% | 56 / 431 | |
| 2×2 | 3.20 | 4.05 | top 16.6% | 195 / 855 | |
| Skewb | 8.03 | 17.67 | top 41.5% | 158 / 285 | |
| 4×4 | 1:08.35 | 1:15.23 | top 45.2% | 256 / 423 | |
| 3×3 one-handed | 41.00 | 46.35 | top 66.7% | 314 / 361 |
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
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 7 Aug 2026Three personal bests in one day at BC Championship 2026.
- 1 May 2021First sub-10 3×3: 9.85 at Guangdong Open 2021.
- 28 Mar 2021Three personal bests in one day at Shenzhen Nanshan Morning 2021.
- 28 Feb 2021Three personal bests in one day at Guangzhou Panyu Afternoon 2021.
- 8 Feb 2020Three personal bests in one day at Downtown Vancouver Winter 2020.
- 24 Jan 2020Three personal bests in one day at Washington Championship 2020.
Competitions
- BC Championship 2026 · 7 Aug 2026 — 3 personal bests set
- Coquitlam Crunch 2025 · 3 May 2025 — 1 personal best set
- Vancouver Southlands Sprint 2024 · 19 Oct 2024
- Shenzhen Youth Open 2023 · 26 Nov 2023 — 1 personal best set
- Guangdong Open 2021 · 1 May 2021 — 2 personal bests set
- Shenzhen Nanshan Morning 2021 · 28 Mar 2021 — 3 personal bests set
- Guangzhou Panyu Afternoon 2021 · 28 Feb 2021 — 3 personal bests set
- Cubing At Sea 2020 · 14 Feb 2020 — 1 personal best set
- Downtown Vancouver Winter 2020 · 8 Feb 2020 — 3 personal bests set
- Washington Championship 2020 · 24 Jan 2020 — 3 personal bests set
- UBC Open 2020 · 4 Jan 2020 — 3 personal bests set
- Chilliwack Cubes Fall 2019 · 5 Oct 2019 — 3 personal bests set
- Shenzhen Cubing 10th Anniversary 2019 · 24 Aug 2019 — 2 personal bests set
- Meizhou Open 2019 · 21 Jul 2019
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.
- Kevin Matthews — met in 39 rounds, finished ahead 10 times
- Luke Jankowiak — met in 31 rounds, never finished ahead
- Kyle Van Straaten — met in 30 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.44 away.
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.05 away.
Targets move as he improves.