In the past year (2025), Kotaro Sumi (角浩太郎) competed in 3 competitions and 7 rounds across 4 events, from Apr 12th to Sep 15th.
Solves/Attempts
He attempted 35 solves and completed 33.
| Event | Solves | Attempts |
| 3x3x3 Cube | 15 | 15 |
| Skewb | 9 | 10 |
| Pyraminx | 5 | 5 |
| Clock | 4 | 5 |
Personal Bests
He broke his personal best 11 times across 4 events, including 6 singles and 5 averages.
| Event | Times | Single | Average |
| 3x3x3 Cube | 6 | 3 | 3 |
| Clock | 2 | 1 | 1 |
| Skewb | 2 | 1 | 1 |
| Pyraminx | 1 | 1 | 0 |
Improvements of Single
| Event | ≤2024 | 2025 | Improvement |
| Skewb | 17.02 | 11.83 | 5.19 (43.87%) |
| 3x3x3 Cube | 32.22 | 23.19 | 9.03 (38.94%) |
| Pyraminx | 10.52 | 8.61 | 1.91 (22.18%) |
| Clock | - | 30.44 | - |
Improvements of Average
| Event | ≤2024 | 2025 | Improvement |
| Skewb | 23.14 | 16.24 | 6.90 (42.49%) |
| 3x3x3 Cube | 40.02 | 29.32 | 10.70 (36.49%) |
| Clock | - | 39.95 | - |
Cubers
He met 319 cubers from 15 countries/regions, 95 of whom competed with him more than once.
| Shared Competitions | Competitors |
| 1 | 224 |
| 2 | 65 |
| 3 | 30 |
| All | 319 |
Regions
He competed in 1 country/region.
