In the past year (2025), Zhou Zi Kai (周子凱) competed in 3 competitions and 25 rounds across 9 events, from Feb 8th to Nov 16th.
Solves/Attempts
He attempted 104 solves and completed 100.
| Event | Solves | Attempts |
| 3x3x3 Cube | 25 | 25 |
| 2x2x2 Cube | 23 | 25 |
| Pyraminx | 20 | 20 |
| Skewb | 10 | 10 |
| 3x3x3 One-Handed | 9 | 9 |
| 4x4x4 Cube | 8 | 9 |
| 5x5x5 Cube | 2 | 2 |
| Clock | 2 | 2 |
| Megaminx | 1 | 2 |
Personal Bests
He broke his personal best 7 times across 6 events, including 5 singles and 2 averages.
| Event | Times | Single | Average |
| 3x3x3 Cube | 2 | 1 | 1 |
| 2x2x2 Cube | 1 | 0 | 1 |
| 4x4x4 Cube | 1 | 1 | 0 |
| Clock | 1 | 1 | 0 |
| Pyraminx | 1 | 1 | 0 |
| Skewb | 1 | 1 | 0 |
Improvements of Single
| Event | ≤2024 | 2025 | Improvement |
| Clock | 22.47 | 17.54 | 4.93 (28.11%) |
| Skewb | 5.60 | 4.94 | 0.66 (13.36%) |
| Pyraminx | 2.49 | 2.30 | 0.19 (8.26%) |
| 4x4x4 Cube | 45.92 | 44.31 | 1.61 (3.63%) |
| 3x3x3 Cube | 8.05 | 7.84 | 0.21 (2.68%) |
Improvements of Average
| Event | ≤2024 | 2025 | Improvement |
| 2x2x2 Cube | 3.64 | 3.49 | 0.15 (4.30%) |
| 3x3x3 Cube | 10.15 | 10.14 | 0.01 (0.10%) |
Cubers
He met 484 cubers from 13 countries/regions, 80 of whom competed with him more than once.
| Shared Competitions | Competitors |
| 1 | 404 |
| 2 | 80 |
| All | 484 |
Regions
He competed in 2 countries/regions.
| Region | Times |
| Hong Kong | 2 |
| China | 1 |
Cities
In China, he visited 2 cities while competing.
| City | Times |
| Hong Kong | 2 |
| Chengdu | 1 |
