People · United States
Isaac Willemssen
3×3 · top 4.7% of 288,433 all-time · competing since March 2024 · 2024WILL19
Isaac Willemssen has been competing for 3 years. His best event is the 3×3: a personal-best single of 8.93, set at Naperville Gray Skies 2026, puts him in the top 4.7% of the 288,433 people who have ever been ranked in the event, and 2,688th in the United States. Until May 2008, no official 3×3 solve in the world had been that fast. Across 11 competitions since March 2024, he has put 447 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 13% around a typical one; 54% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 12.22 in March 2024 to 8.93, a 27% improvement. Isaac 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 | United States | |
|---|---|---|---|---|---|
| 3×3 | 8.93 | 10.22 | top 4.7% | 2,688 / 60,666 | |
| Pyraminx | 3.83 | 5.55 | top 6.9% | 1,780 / 29,168 | |
| 2×2 | 2.48 | 3.98 | top 8.8% | 3,487 / 41,674 | |
| 4×4 | 45.18 | 50.34 | top 18.6% | 2,840 / 19,354 | |
| Skewb | 6.86 | 9.87 | top 32.7% | 5,536 / 19,164 | |
| 3×3 one-handed | 25.21 | 31.69 | top 34.9% | 4,664 / 15,900 | |
| 5×5 | 1:43.74 | 1:52.27 | top 38.2% | 3,101 / 9,537 | |
| Clock | 13.68 | 14.98 | top 42.5% | 3,494 / 9,172 | |
| Megaminx | 2:11.05 | 2:29.94 | top 51.9% | 3,963 / 8,026 | |
| Square-1 | 39.96 | 51.40 | top 65.3% | 4,345 / 6,846 | |
| 6×6 | 4:37.03 | 6:12.69 | top 76.5% | 3,088 / 4,262 |
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
- 5 Jun 2026Four personal bests in one day at CubingUSA Great Lakes Championship 2026.
- 17 Jan 2026Three personal bests in one day at Naperville Gray Skies 2026.
- 8 Nov 2025Three personal bests in one day at Pyraminx in Pewaukee 2025.
- 1 Aug 2025Eight personal bests in one day at CubingUSA Great Lakes Championship 2025.
- 1 Mar 2025First sub-10 3×3: 9.79 at Racing Kane 2025.
- 1 Mar 2025Four personal bests in one day at Racing Kane 2025.
Competitions
- CubingUSA Great Lakes Championship 2026 · 5 Jun 2026 — 4 personal bests set
- Naperville Gray Skies 2026 · 17 Jan 2026 — 3 personal bests set
- Pyraminx in Pewaukee 2025 · 8 Nov 2025 — 3 personal bests set
- CubingUSA Great Lakes Championship 2025 · 1 Aug 2025 — 8 personal bests set
- Land of Lincoln 2025 · 21 Jun 2025 — 2 personal bests set
- Racing Kane 2025 · 1 Mar 2025 — 4 personal bests set
- Naperville Winter 2025 · 1 Feb 2025 — 3 personal bests set
- DuPage Fall 2024 · 28 Sep 2024 — 8 personal bests set
- Ackerman Spring 2024 · 15 Jun 2024
- Chicago Area Twist Spring A 2024 · 18 May 2024 — 2 personal bests set
- Naperville Winter 2024 · 16 Mar 2024
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.
- Sebastian Carrillo — met in 102 rounds, never finished ahead
- Adam Schwenn — met in 90 rounds, finished ahead 40 times
- Ant Irizarry — met in 88 rounds, finished ahead 26 times
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 0.93 away.
- A sub-3 Pyraminx single — 4,783 people have one; it is 0.83 away.
Targets move as he improves.