People · Australia
Isaac Zheng
3×3 · top 1.0% of 284,439 all-time · competing since January 2023 · 2023ZHEN02
Isaac Zheng has been competing for 4 years. His best event is the 3×3: a personal-best single of 6.67, set at Melbourne Summer 2025, puts him in the top 1.0% of the 284,439 people who have ever been ranked in the event, and 110th in Australia. Until January 2011, no official 3×3 solve in the world had been that fast. Across 7 competitions since January 2023, he has put 239 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 69% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 9.93 in January 2023 to 6.67, a 33% improvement. Isaac has entered seven competitions, more competitions than 88% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Australia | |
|---|---|---|---|---|---|
| 3×3 | 6.67 | 7.40 | top 1.0% | 110 / 11,709 | |
| 3×3 one-handed | 13.09 | 15.35 | top 4.6% | 98 / 2,659 | |
| Megaminx | 51.94 | 57.27 | top 6.0% | 80 / 1,277 | |
| 2×2 | 2.24 | 3.32 | top 6.5% | 495 / 8,567 | |
| 4×4 | 34.85 | 38.67 | top 6.6% | 168 / 3,051 | |
| Pyraminx | 4.71 | 6.78 | top 11.5% | 534 / 5,993 | |
| 5×5 | 1:55.64 | — | early days — 2 solves | 626 / 1,356 |
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
- 9 Jul 2026Three personal bests in one day at Australian Nationals 2026.
- 24 Jan 2025Three personal bests in one day at Melbourne Summer 2025.
- 19 Jan 2024Four personal bests in one day at Melbourne Summer 2024.
- 26 Aug 2023Three personal bests in one day at Melbourne Cubing for Kids Saturday 2023.
- 20 Jan 2023First competition: Melbourne Summer 2023. A 9.93 3×3 single to start from.
Competitions
- Australian Nationals 2026 · 9 Jul 2026 — 3 personal bests set
- North-East Melbourne March Saturday 2026 · 7 Mar 2026 — 1 personal best set
- Melbourne Summer 2025 · 24 Jan 2025 — 3 personal bests set
- Kensington May Sunday 2024 · 12 May 2024 — 2 personal bests set
- Melbourne Summer 2024 · 19 Jan 2024 — 4 personal bests set
- Melbourne Cubing for Kids Saturday 2023 · 26 Aug 2023 — 3 personal bests set
- Melbourne Summer 2023 · 20 Jan 2023
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.
- Phoenix Patterson — met in 51 rounds, never finished ahead
- Nathan Fares — met in 46 rounds, finished ahead 14 times
- Roman Rudakov — met in 46 rounds, finished ahead 8 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 0.67 away.
- A sub-12 3×3 one-handed single — 2,187 people have one; it is 1.09 away.
Targets move as he improves.