People · Netherlands
Sebastiaan Arbeitstein
3×3 · top 8.9% of 284,439 all-time · competing since September 2025 · 2025ARBE02
Sebastiaan Arbeitstein has been competing for a year. His best event is the 3×3: a personal-best single of 10.48, set at West-Fries Open 2026, puts him in the top 8.9% of the 284,439 people who have ever been ranked in the event, and 248th in the Netherlands. Until August 2006, no official 3×3 solve in the world had been that fast. Across 5 competitions since September 2025, he has put 243 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 10% around a typical one, steadier than 97% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 12.68 in September 2025 to 10.48, a 17% improvement. Sebastiaan has entered five competitions, more competitions than 83% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Netherlands | |
|---|---|---|---|---|---|
| 3×3 | 10.48 | 12.43 | top 8.9% | 248 / 2,294 | |
| 4×4 | 42.10 | 47.74 | top 14.6% | 141 / 1,000 | |
| Pyraminx | 5.47 | 6.63 | top 16.2% | 276 / 1,283 | |
| 2×2 | 3.54 | 4.14 | top 20.7% | 468 / 1,665 | |
| 5×5 | 1:25.70 | 1:33.44 | top 23.9% | 118 / 532 | |
| Skewb | 6.06 | 9.94 | top 26.2% | 286 / 957 | |
| Square-1 | 20.32 | 25.17 | top 28.7% | 100 / 407 | |
| Clock | 11.13 | 13.16 | top 30.7% | 148 / 466 | |
| Megaminx | 1:47.82 | 1:56.55 | top 39.1% | 164 / 414 | |
| 7×7 | 5:31.95 | — | early days — 1 solve | 122 / 169 | |
| 6×6 | 3:48.21 | — | early days — 1 solve | 142 / 205 | |
| 3×3 one-handed | 42.74 | 47.56 | top 69.0% | 480 / 726 |
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
- 13 Jun 2026Three personal bests in one day at Rotterdam Big 'n Brain 2026.
- 2 May 2026Eight personal bests in one day at West-Fries Open 2026.
- 10 Jan 2026Three personal bests in one day at Leersum Open 2026.
- 18 Oct 2025Four personal bests in one day at Take Your Time Ermelo 2025.
- 5 Sep 2025First competition: Rubik's Dutch Nationals 2025. A 12.68 3×3 single to start from.
Competitions
- Rotterdam Big 'n Brain 2026 · 13 Jun 2026 — 3 personal bests set
- West-Fries Open 2026 · 2 May 2026 — 8 personal bests set
- Leersum Open 2026 · 10 Jan 2026 — 3 personal bests set
- Take Your Time Ermelo 2025 · 18 Oct 2025 — 4 personal bests set
- Rubik's Dutch Nationals 2025 · 5 Sep 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.
- Ivo Stoutjesdijk — met in 56 rounds, finished ahead once
- Hlib Dokiienko (Гліб Докієнко) — met in 53 rounds, finished ahead 4 times
- Florine Zuur — met in 53 rounds, finished ahead once
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 0.48 away.
- A sub-40 4×4 single — 10,180 people have one; it is 2.10 away.
Targets move as he improves.