People · Australia
Zac Chung
3×3 · top 1.4% of 288,433 all-time · competing since May 2025 · 2025CHUN09
Zac Chung has been competing for a year. His best event is the 3×3: a personal-best single of 7.02, set at Australian Nationals 2026, puts him in the top 1.4% of the 288,433 people who have ever been ranked in the event, and 152nd in Australia. Until November 2010, no official 3×3 solve in the world had been that fast. Across 10 competitions since May 2025, he has put 413 official solves on the record across nine events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 63% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 9.80 in May 2025 to 7.02, a 28% improvement. Zac has entered ten competitions, more competitions than 92% 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 | 7.02 | 9.13 | top 1.4% | 152 / 11,943 | |
| 2×2 | 1.57 | 1.93 | top 2.5% | 210 / 8,727 | |
| 4×4 | 31.82 | 36.81 | top 4.1% | 114 / 3,108 | |
| 3×3 one-handed | 14.74 | 19.36 | top 7.7% | 176 / 2,685 | |
| Pyraminx | 4.04 | 5.50 | top 7.9% | 368 / 6,109 | |
| 5×5 | 1:07.04 | 1:10.56 | top 9.8% | 137 / 1,412 | |
| Megaminx | 1:10.23 | 1:14.83 | top 15.8% | 195 / 1,313 | |
| Skewb | 4.83 | 7.55 | top 16.9% | 451 / 3,589 | |
| Clock | 9.12 | 11.77 | top 20.5% | 245 / 1,159 |
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
- 12 Sep 2026Three personal bests in one day at Belgrave Open 2026.
- 9 Jul 2026Six personal bests in one day at Australian Nationals 2026.
- 30 Aug 2025Three personal bests in one day at Geelong Winter 2025.
- 26 Jul 2025Four personal bests in one day at Spark Melbourne July 2025.
- 31 May 2025First competition: VIC State Championship 2025. A 9.80 3×3 single to start from.
Competitions
- Belgrave Open 2026 · 12 Sep 2026 — 3 personal bests set
- Australian Nationals 2026 · 9 Jul 2026 — 6 personal bests set
- Spark Melbourne Autumn Sunday 2026 · 24 May 2026
- North-East Melbourne March Saturday 2026 · 7 Mar 2026 — 1 personal best set
- Taiwan Championship 2025 · 19 Dec 2025 — 2 personal bests set
- Taoyuan Airport Cube Day 2025 · 29 Nov 2025
- The Big Cube Melbourne 2025 · 11 Oct 2025 — 1 personal best set
- Geelong Winter 2025 · 30 Aug 2025 — 3 personal bests set
- Spark Melbourne July 2025 · 26 Jul 2025 — 4 personal bests set
- VIC State Championship 2025 · 31 May 2025 — 1 personal best set
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.
- Tommy Kiprillis — met in 64 rounds, finished ahead once
- Charlie Handley — met in 63 rounds, finished ahead 10 times
- Phoenix Patterson — met in 58 rounds, never finished ahead
Next targets
- A sub-6 3×3 single — 1,419 people have one; it is 1.02 away.
- A sub-1 2×2 single — 1,050 people have one; it is 0.57 away.
Targets move as he improves.