People · Australia
KC Ernestine Acdal
3×3 · top 3.2% of 288,433 all-time · competing since January 2020 · 2020ACDA01
KC Ernestine Acdal has been competing for 7 years. His best event is the 3×3: a personal-best single of 8.21, set at Australian Nationals 2025, puts him in the top 3.2% of the 288,433 people who have ever been ranked in the event, and 312th in Australia. Until July 2008, no official 3×3 solve in the world had been that fast. Across 11 competitions since January 2020, he has put 433 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 13% around a typical one; 57% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 51.57 in January 2020 to 8.21, an 84% improvement. KC has entered eleven competitions, more competitions than 93% 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 | 8.21 | 11.78 | top 3.2% | 312 / 11,943 | |
| Pyraminx | 3.24 | 5.81 | top 4.5% | 202 / 6,109 | |
| Skewb | 3.13 | 3.76 | top 5.7% | 174 / 3,589 | |
| 2×2 | 2.58 | 3.53 | top 9.8% | 758 / 8,727 | |
| Clock | 7.14 | 12.19 | top 11.4% | 139 / 1,159 | |
| 3×3 one-handed | 18.82 | 22.41 | top 17.4% | 390 / 2,685 | |
| 5×5 | 1:19.04 | 1:24.58 | top 18.5% | 261 / 1,412 | |
| Megaminx | 1:16.68 | 1:22.80 | top 19.7% | 240 / 1,313 | |
| 4×4 | 46.61 | 51.10 | top 20.4% | 516 / 3,108 | |
| Square-1 | 17.93 | 26.68 | top 23.2% | 231 / 920 | |
| 6×6 | 3:43.21 | — | early days — 3 solves | 377 / 667 | |
| 7×7 | 5:35.37 | 5:52.59 | early days — 3 solves | 296 / 540 |
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
- 14 Feb 2026Four personal bests in one day at Cube Against Cancer Brisbane 2026.
- 2 Oct 2025First sub-10 3×3: 8.21 at Australian Nationals 2025.
- 2 Oct 2025Seven personal bests in one day at Australian Nationals 2025.
- 11 Apr 2025Eight personal bests in one day at QLD State Championship 2025.
- 21 Sep 2024Five personal bests in one day at MarsdeNxN 2024.
- 28 Jun 2024Five personal bests in one day at Queensland Open 2024.
Competitions
- Queensland Open 2026 · 27 Jun 2026 — 1 personal best set
- Cube Against Cancer Brisbane 2026 · 14 Feb 2026 — 4 personal bests set
- Speedy Southport 2025 · 22 Nov 2025 — 2 personal bests set
- Australian Nationals 2025 · 2 Oct 2025 — 7 personal bests set
- QLD State Championship 2025 · 11 Apr 2025 — 8 personal bests set
- MarsdeNxN 2024 · 21 Sep 2024 — 5 personal bests set
- Queensland Open 2024 · 28 Jun 2024 — 5 personal bests set
- Cubing in Corinda Sunday 2024 · 10 Mar 2024 — 5 personal bests set
- Australian Nationals 2023 · 28 Sep 2023 — 5 personal bests set
- Brisbane Autumn 2022 · 2 Apr 2022 — 3 personal bests set
- Northside Cube Days 2020 · 11 Jan 2020
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.
- Connor Theodore — met in 103 rounds, finished ahead 24 times
- Jamie Otsu — met in 101 rounds, finished ahead 7 times
- Laura Ting — met in 95 rounds, finished ahead 32 times
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 0.21 away.
- A sub-3 Pyraminx single — 4,783 people have one; it is 0.24 away.
Targets move as he improves.