Daily Sudoku Challenge — 2026-06-15 (Casual) — Level 4
A fresh, hand-tuned Sudoku awaits. Today's grid balances logic and intuition — perfect to sharpen your mind in under 15 minutes.
| 8 | 9 | · | 2 | · | 5 | · | · | 6 |
| 1 | · | · | 3 | 7 | · | · | · | · |
| · | · | 5 | 4 | · | · | 1 | 3 | 2 |
| 2 | 8 | · | · | 4 | · | · | · | 3 |
| · | 7 | · | · | · | 3 | 2 | · | 9 |
| 3 | · | 6 | 5 | 2 | 9 | · | · | · |
| 6 | · | · | · | 5 | · | · | · | 1 |
| · | · | · | 7 | 8 | 2 | 4 | · | · |
| · | 5 | 8 | 6 | 3 | 1 | 9 | 2 | 7 |
Solving tips
- When stuck, restart your scan from the digit with fewest candidates.
- Scan rows, columns, and boxes for the most-frequent digit first.
- Pencil-mark candidates only when single-cell scanning stalls.