People · Netherlands
Sibbe van der Kemp
2×2 · top 5.7% of 189,179 all-time · competing since December 2023 · 2023KEMP09
Sibbe van der Kemp has been competing for 3 years. His best event is the 2×2: a personal-best single of 2.13, set at West-Fries Open 2026, puts him in the top 5.7% of the 189,179 people who have ever been ranked in the event, and 126th in the Netherlands. Until February 2008, no official 2×2 solve in the world had been that fast. Across 17 competitions since December 2023, he has put 452 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 14% around a typical one; 69% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 18.46 in December 2023 to 9.52, a 48% improvement. Sibbe has entered 17 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Netherlands | |
|---|---|---|---|---|---|
| 2×2 | 2.13 | 4.52 | top 5.7% | 126 / 1,680 | |
| 3×3 | 9.52 | 13.37 | top 6.2% | 172 / 2,318 | |
| Pyraminx | 5.51 | 9.40 | top 16.5% | 289 / 1,296 | |
| Clock | 11.63 | 14.09 | top 33.2% | 167 / 479 | |
| 4×4 | 1:01.55 | 1:10.15 | top 38.2% | 372 / 1,009 | |
| Skewb | 9.54 | 13.20 | top 52.1% | 542 / 968 | |
| 3×3 one-handed | 32.84 | 42.31 | top 53.1% | 373 / 737 | |
| 5×5 | 2:22.88 | 2:41.84 | top 62.5% | 328 / 542 |
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
- 28 Jun 2025First sub-10 3×3: 9.52 at Arnhem Open 2025.
- 28 Jun 2025Three personal bests in one day at Arnhem Open 2025.
- 9 Jun 2024First sub-15 3×3: 13.24 at Capelle Cubing 2024.
- 9 Jun 2024Three personal bests in one day at Capelle Cubing 2024.
- 16 Dec 2023First competition: Take Your Time Ermelo 2023. A 18.46 3×3 single to start from.
Competitions
- Back in Ermelo 2026 · 17 Oct 2026 — 1 personal best set
- West-Fries Open 2026 · 2 May 2026 — 2 personal bests set
- Breda Open 2026 · 18 Apr 2026 — 1 personal best set
- Amsterdam Open 2026 · 22 Feb 2026 — 1 personal best set
- Take Your Time Ermelo 2025 · 18 Oct 2025 — 1 personal best set
- Rubik's Dutch Nationals 2025 · 5 Sep 2025 — 1 personal best set
- Breda Open 2025 · 23 Aug 2025
- Arnhem Open 2025 · 28 Jun 2025 — 3 personal bests set
- Start in Veenendaal 2025 · 22 Mar 2025 — 1 personal best set
- Leersum Squared 2025 · 8 Feb 2025 — 2 personal bests set
- Alphen Cubing 2025 · 19 Jan 2025
- Dutch Nationals 2024 · 15 Nov 2024 — 2 personal bests set
- Dutch Open 2024 · 26 Oct 2024 — 2 personal bests set
- Capelle Cubing 2024 · 9 Jun 2024 — 3 personal bests set
- Arnhem Open A 2024 · 23 Mar 2024 — 1 personal best set
- Leersum Algs 2024 · 5 Jan 2024 — 1 personal best set
- Take Your Time Ermelo 2023 · 16 Dec 2023 — 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.
- Mick Boekema — met in 93 rounds, never finished ahead
- Davian van Plateringen — met in 91 rounds, finished ahead 15 times
- Marc Dullemond — met in 87 rounds, finished ahead 17 times
Next targets
- A sub-2 2×2 single — 9,039 people have one; it is 0.13 away.
- A sub-8 3×3 single — 8,101 people have one; it is 1.52 away.
Targets move as he improves.