5 Dan
Rubikun 
| Country/Region |  Japan |
|---|---|
| TopCoder ID | Rubikun |
| Codeforces ID | Rubikun |
| Affiliation | blessing software |
Contest Status
| Rank | 88th |
|---|---|
| Rating | 2834 |
| Highest Rating | 2938 ― 5 Dan (+62 to promote) |
| Rated Matches | 129 |
| Last Competed | 2025/09/28 |