Daily Killer Sudoku July 21, 2026
The same puzzle everyone got on July 21, 2026 — deterministic, graded, and still playable.
| 3 | 22 | 9 | 5 | 14 | 16 | |||
| 182 | 19 | |||||||
| 7 | 13 | 16 | 8 | 14 | ||||
| 5 | 18 | 18 | 7 | |||||
| 25 | 6 | 14 | ||||||
| 11 | 10 | 20 | ||||||
| 18 | 22 | 168 | 11 | |||||
| 19 | 12 | |||||||
| 1 | 11 | 6 |
What it takes to solve
Our grader solved this puzzle in 147 steps. Every technique it needed, in ladder order:
- Naked single× 61
- Hidden single× 16
- Cage combinations× 70
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 July 21, 2026: the daily classic.