Daily Killer Sudoku July 31, 2026
The same puzzle everyone got on July 31, 2026 — deterministic, graded, and still playable.
| 17 | 10 | 2 | 9 | 17 | 1 | |||
| 22 | 4 | 227 | 23 | |||||
| 10 | 9 | 9 | 2 | |||||
| 17 | 9 | 4 | 8 | 10 | ||||
| 11 | 10 | 13 | 14 | |||||
| 15 | 9 | |||||||
| 5 | 25 | 12 | 16 | 3 | ||||
| 9 | 12 | 24 | 2 | 22 | ||||
What it takes to solve
Our grader solved this puzzle in 150 steps. Every technique it needed, in ladder order:
- Naked single× 52
- Hidden single× 27
- Cage combinations× 71
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 31, 2026: the daily classic.