Daily Killer Sudoku August 21, 2026
The same puzzle everyone got on August 21, 2026 — deterministic, graded, and still playable.
| 5 | 16 | 24 | 12 | 5 | ||||
| 12 | 8 | 20 | ||||||
| 298 | 14 | 2 | 9 | 6 | ||||
| 9 | 14 | 12 | ||||||
| 14 | 17 | 22 | 11 | |||||
| 13 | 20 | 5 | ||||||
| 1 | 7 | 14 | 16 | |||||
| 9 | 13 | 15 | 16 | 7 | 4 | |||
| 18 |
What it takes to solve
Our grader solved this puzzle in 132 steps. Every technique it needed, in ladder order:
- Naked single× 47
- Hidden single× 31
- Cage combinations× 54
Difficulty on Stillgrid is graded by the hardest technique a puzzle actually requires — this one earns Medium. How the technique ladder works.
Stuck on a cage? The killer sudoku calculator lists every combination a sum can take.
Also on August 21, 2026: the daily classic.