In the past year (2025), Sebastian Kierznikiewicz competed in 14 competitions and 92 rounds across 7 events, from Jan 18th to Dec 14th.
Solves/Attempts
He attempted 385 solves and completed 375.
| Event | Solves | Attempts |
| 3x3x3 Cube | 109 | 110 |
| 2x2x2 Cube | 69 | 70 |
| Clock | 64 | 68 |
| Pyraminx | 60 | 62 |
| Skewb | 40 | 41 |
| 4x4x4 Cube | 22 | 22 |
| 5x5x5 Cube | 11 | 12 |
Personal Bests
He broke his personal best 22 times across 7 events, including 12 singles and 10 averages.
| Event | Times | Single | Average |
| 3x3x3 Cube | 8 | 3 | 5 |
| 4x4x4 Cube | 3 | 3 | 0 |
| 5x5x5 Cube | 3 | 3 | 0 |
| Skewb | 3 | 2 | 1 |
| 2x2x2 Cube | 2 | 0 | 2 |
| Clock | 2 | 1 | 1 |
| Pyraminx | 1 | 0 | 1 |
Improvements of Single
| Event | ≤2024 | 2025 | Improvement |
| Skewb | 8.88 | 5.15 | 3.73 (72.43%) |
| 3x3x3 Cube | 19.66 | 14.24 | 5.42 (38.06%) |
| 5x5x5 Cube | 3:44.39 | 2:47.00 | 57.39 (34.37%) |
| 4x4x4 Cube | 1:40.12 | 1:17.18 | 22.94 (29.72%) |
| Clock | 9.91 | 9.08 | 0.83 (9.14%) |
Improvements of Average
| Event | ≤2024 | 2025 | Improvement |
| 3x3x3 Cube | 26.89 | 21.72 | 5.17 (23.80%) |
| 2x2x2 Cube | 7.05 | 6.67 | 0.38 (5.70%) |
| Skewb | 13.25 | 12.77 | 0.48 (3.76%) |
| Pyraminx | 11.43 | 11.23 | 0.20 (1.78%) |
| Clock | 11.46 | 11.37 | 0.09 (0.79%) |
Cubers
He met 772 cubers from 24 countries/regions, 353 of whom competed with him more than once. Joanna Kierznikiewicz was the only one who accompanied the whole 14 competitions.
| Shared Competitions | Competitors |
| 1 | 419 |
| 2 | 140 |
| 3 | 73 |
| 4 | 43 |
| 5 | 21 |
| 6 | 25 |
| 7 | 18 |
| 8 | 10 |
| 9 | 11 |
| 10 | 4 |
| 11 | 4 |
| 12 | 1 |
| 13 | 2 |
| 14 | 1 |
| All | 772 |
Regions
He competed in 2 countries/regions.
| Region | Times |
| Poland | 13 |
| Czech Republic | 1 |
