People · United States
Jackson Grebasch
Pyraminx · top 3.9% of 129,321 all-time · competing since December 2023 · 2023GREB02
Jackson Grebasch has been competing for 3 years. His best event is the Pyraminx: a personal-best single of 3.07, set at Pyraminx in Pewaukee 2025, puts him in the top 3.9% of the 129,321 people who have ever been ranked in the event, and 1,032nd in the United States. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 6 competitions since December 2023, he has put 138 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 16% around a typical one; 91% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 31.20 in December 2023 to 17.26, a 45% improvement. Jackson has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| Pyraminx | 3.07 | 9.98 | top 3.9% | 1,032 / 28,708 | |
| 2×2 | 4.22 | 5.30 | top 29.3% | 11,633 / 40,951 | |
| Clock | 11.30 | 15.59 | top 31.6% | 2,474 / 8,927 | |
| 3×3 | 17.26 | 20.83 | top 31.8% | 17,586 / 59,724 | |
| Skewb | 10.96 | 17.98 | top 60.6% | 11,137 / 18,907 | |
| Square-1 | 1:15.31 | — | top 91.1% | 6,180 / 6,743 | |
| 4×4 | 2:44.77 | — | early days — 2 solves | 18,129 / 19,072 |
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
- 26 Oct 2024First sub-20 3×3: 17.26 at Pyraminx in Pewaukee 2024.
- 26 Oct 2024Four personal bests in one day at Pyraminx in Pewaukee 2024.
- 18 May 2024Three personal bests in one day at Chicago Area Twist Spring A 2024.
- 3 Feb 2024First sub-30 3×3: 23.68 at DuPage Winter 2024.
- 3 Feb 2024Four personal bests in one day at DuPage Winter 2024.
- 3 Dec 2023First competition: The Core of Hobart 2023. A 31.20 3×3 single to start from.
Competitions
- Midwest Cubing Classic 2026 · 26 Apr 2026
- Pyraminx in Pewaukee 2025 · 8 Nov 2025 — 1 personal best set
- Pyraminx in Pewaukee 2024 · 26 Oct 2024 — 4 personal bests set
- Chicago Area Twist Spring A 2024 · 18 May 2024 — 3 personal bests set
- DuPage Winter 2024 · 3 Feb 2024 — 4 personal bests set
- The Core of Hobart 2023 · 3 Dec 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.
- Lucas Lippman-Bruno — met in 30 rounds, finished ahead once
- Adam Schwenn — met in 27 rounds, finished ahead twice
- Zachary Cribb — met in 27 rounds, finished ahead once
Next targets
- A sub-3 Pyraminx single — 4,700 people have one; it is 0.07 away.
- A sub-4 2×2 single — 49,452 people have one; it is 0.22 away.
Targets move as he improves.