People · Poland
Bartosz Kosyna
Skewb · top 1.7% of 74,164 all-time · competing since October 2024 · 2024KOSY01
Bartosz Kosyna has been competing for 2 years. His best event is the Skewb: a personal-best single of 2.13, set at Cube4fun Lublin on POLLUB 2026, puts him in the top 1.7% of the 74,164 people who have ever been ranked in the event, and 110th in Poland. Until December 2014, no official Skewb solve in the world had been that fast. Across 16 competitions since October 2024, he has put 503 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 54% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 20.59 in October 2024 to 11.58, a 44% improvement. Bartosz has entered 16 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 | Poland | |
|---|---|---|---|---|---|
| Skewb | 2.13 | 3.14 | top 1.7% | 110 / 2,848 | |
| 2×2 | 2.57 | 4.91 | top 9.7% | 745 / 5,487 | |
| Pyraminx | 4.40 | 6.85 | top 9.7% | 641 / 4,456 | |
| 3×3 | 11.58 | 13.29 | top 12.5% | 1,056 / 6,670 | |
| 4×4 | 48.69 | 54.09 | top 23.1% | 665 / 2,894 | |
| Clock | 10.96 | 14.21 | top 29.8% | 559 / 1,574 | |
| 3×3 one-handed | 24.64 | 27.56 | top 33.3% | 705 / 2,202 | |
| 5×5 | 2:12.03 | — | early days — 1 solve | 782 / 1,458 |
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
- 10 Aug 2025Four personal bests in one day at Cube4fun Lublin Holidays 2025.
- 1 Jun 2025Three personal bests in one day at Cube4fun Lublin Summer 2025.
- 23 Feb 2025Five personal bests in one day at Cube4fun Lublin Sunday 2025.
- 15 Feb 2025First sub-15 3×3: 14.20 at Cube4fun Lublin Saturday 2025.
- 15 Feb 2025Four personal bests in one day at Cube4fun Lublin Saturday 2025.
- 11 Jan 2025Four personal bests in one day at Cube4fun Lublin Winter 2025.
Competitions
- Cube4fun in Lublin 2026 · 17 Oct 2026 — 2 personal bests set
- Cube4fun Lublin Autumn 2026 · 10 Oct 2026 — 2 personal bests set
- Cube4fun Lublin Summer 2026 · 12 Jul 2026
- Cube4fun Lublin on POLLUB 2026 · 13 Jun 2026 — 2 personal bests set
- Cube4fun Lublin Spring 2026 · 19 Apr 2026 — 1 personal best set
- Cube4fun Lublin Winter 2026 · 10 Jan 2026 — 2 personal bests set
- Cube4fun in Lublin 2025 · 29 Nov 2025 — 1 personal best set
- Cube4fun Lublin Autumn 2025 · 11 Oct 2025 — 1 personal best set
- Cube4fun Lublin Holidays 2025 · 10 Aug 2025 — 4 personal bests set
- Cube4fun Lublin Summer 2025 · 1 Jun 2025 — 3 personal bests set
- Cube4fun Lublin Spring 2025 · 27 Apr 2025 — 2 personal bests set
- Cube4fun Lublin Sunday 2025 · 23 Feb 2025 — 5 personal bests set
- Cube4fun Lublin Saturday 2025 · 15 Feb 2025 — 4 personal bests set
- Cube4fun Lublin Winter 2025 · 11 Jan 2025 — 4 personal bests set
- Cube4fun Bełżyce Autumn 2024 · 16 Nov 2024 — 4 personal bests set
- Cube4fun Double Weekend Lublin 2024 · 20 Oct 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.
- Ryszard Kędziora — met in 119 rounds, finished ahead 10 times
- Dawid Kowalczyk — met in 92 rounds, finished ahead twice
- Piotr Tokarski — met in 86 rounds, finished ahead 5 times
Next targets
- A sub-2 Skewb single — 1,031 people have one; it is 0.13 away.
- A sub-2 2×2 single — 9,039 people have one; it is 0.57 away.
Targets move as he improves.