In the past year (2025), Sum Leung competed in 4 competitions and 26 rounds across 11 events, from Apr 19th to Sep 7th.
Solves/Attempts
He attempted 93 solves and completed 78.
| Event | Solves | Attempts |
| 3x3x3 Cube | 24 | 25 |
| 2x2x2 Cube | 19 | 20 |
| Pyraminx | 10 | 10 |
| Skewb | 10 | 10 |
| Square-1 | 9 | 9 |
| 3x3x3 One-Handed | 4 | 4 |
| 4x4x4 Cube | 2 | 8 |
| 6x6x6 Cube | 0 | 1 |
| 3x3x3 Blindfolded | 0 | 3 |
| 3x3x3 Fewest Moves | 0 | 1 |
| Megaminx | 0 | 2 |
Personal Bests
He broke his personal best 20 times across 7 events, including 11 singles and 9 averages.
| Event | Times | Single | Average |
| 3x3x3 Cube | 7 | 3 | 4 |
| Skewb | 4 | 2 | 2 |
| 2x2x2 Cube | 2 | 1 | 1 |
| 3x3x3 One-Handed | 2 | 2 | 0 |
| Pyraminx | 2 | 1 | 1 |
| Square-1 | 2 | 1 | 1 |
| 4x4x4 Cube | 1 | 1 | 0 |
Improvements of Single
| Event | ≤2024 | 2025 | Improvement |
| 3x3x3 Cube | - | 16.04 | - |
| Skewb | - | 19.27 | - |
| 2x2x2 Cube | - | 5.41 | - |
| 3x3x3 One-Handed | - | 40.24 | - |
| Pyraminx | - | 12.67 | - |
| Square-1 | - | 1:17.05 | - |
| 4x4x4 Cube | - | 1:38.49 | - |
Improvements of Average
| Event | ≤2024 | 2025 | Improvement |
| 3x3x3 Cube | - | 18.57 | - |
| Skewb | - | 23.07 | - |
| 2x2x2 Cube | - | 7.88 | - |
| Pyraminx | - | 16.44 | - |
| Square-1 | - | 1:36.14 | - |
Cubers
He met 485 cubers from 33 countries/regions, 113 of whom competed with him more than once. Daniel Robinson was the only one who accompanied the whole 4 competitions.
| Shared Competitions | Competitors |
| 1 | 372 |
| 2 | 79 |
| 3 | 33 |
| 4 | 1 |
| All | 485 |
Regions
He competed in 1 country/region.
| Region | Times |
| United Kingdom | 4 |
