5 problems
| ID | Problem | Difficulty | Accepted | Solved | Status |
|---|---|---|---|---|---|
| 540 | 호반우의 파라파라 댄스hobanwoo-dance | Bronze V | 89% | 35 | Not tried |
| 541 | 나는 호반우가 좋아!Ilovehobanwoo | Bronze I | 70% | 33 | Not tried |
| 542 | 호반우의 4구billiard-simulation | Silver II | 71% | 28 | Not tried |
| 543 | 호반우의 4구 특훈 (easy)hobanwoo-training | Gold V | 60% | 26 | Not tried |
| 547 | 호반우의 4구 특훈 (hard)hobanwoo-training2 | Platinum IV | 26% | 16 | Not tried |
