People · Poland
Sergiusz Jakubczak
2×2 · top 9.6% of 186,767 all-time · competing since November 2012 · 2012JAKU01
Sergiusz Jakubczak has been competing for 14 years. His best event is the 2×2: a personal-best single of 2.57, set at Warsaw Cube Masters 2023, puts him in the top 9.6% of the 186,767 people who have ever been ranked in the event, and 736th in Poland. Until February 2008, no official 2×2 solve in the world had been that fast. Across 15 competitions since November 2012, he has put 447 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 15% around a typical one; 87% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 18.09 in November 2012 to 11.62, a 36% improvement. Sergiusz has entered 15 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Poland | |
|---|---|---|---|---|---|
| 2×2 | 2.57 | 4.20 | top 9.6% | 736 / 5,422 | |
| 4×4 | 39.63 | 48.22 | top 11.7% | 361 / 2,851 | |
| Pyraminx | 4.86 | 6.82 | top 12.3% | 772 / 4,406 | |
| 3×3 | 11.62 | 13.98 | top 12.6% | 1,047 / 6,576 | |
| Megaminx | 1:21.78 | 1:29.21 | top 23.0% | 330 / 1,384 | |
| 3×3 one-handed | 21.55 | 25.84 | top 24.7% | 550 / 2,176 | |
| Skewb | 7.77 | 15.17 | top 39.5% | 1,289 / 2,810 |
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 Dec 2013First sub-15 3×3: 14.02 at Radom Open 2013.
- 14 Dec 2013Five personal bests in one day at Radom Open 2013.
- 24 Nov 2012First competition: Warszawa Open 2012. A 18.09 3×3 single to start from.
Competitions
- Warsaw Cube Masters 2023 · 4 Nov 2023 — 2 personal bests set
- Cube4fun in Siedlce 2023 · 25 Mar 2023
- Siedlce Open 2022 · 5 Nov 2022 — 2 personal bests set
- Cube4fun in Warsaw 2022 · 30 Jul 2022
- September Speedcubing Tour Warszawa 2021 · 25 Sep 2021
- Mazowiecka Liga Speedcubingu Warszawa 2020 · 29 Feb 2020 — 1 personal best set
- III Project Warszawa 2019 · 23 Nov 2019
- II Project Warszawa 2019 · 13 Jul 2019 — 2 personal bests set
- Project Warszawa 2019 · 16 Mar 2019 — 1 personal best set
- Project Radom 2018 · 4 Aug 2018 — 1 personal best set
- Warsaw Cube Masters 2018 · 24 Feb 2018 — 2 personal bests set
- Polish Championship 2016 · 9 Dec 2016 — 2 personal bests set
- Warsaw Cube Masters 2015 · 19 Sep 2015 — 2 personal bests set
- Radom Open 2013 · 14 Dec 2013 — 5 personal bests set
- Warszawa Open 2012 · 24 Nov 2012 — 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.
- Arkadiusz Abramowski — met in 82 rounds, finished ahead 24 times
- Michał Krasowski — met in 80 rounds, finished ahead 4 times
- Przemysław Rogalski — met in 78 rounds, finished ahead 7 times
Next targets
- A sub-2 2×2 single — 8,848 people have one; it is 0.57 away.
- A sub-30 4×4 single — 2,388 people have one; it is 9.63 away.
Targets move as he improves.