Daily Killer Sudoku September 7, 2026
The same puzzle everyone got on September 7, 2026 — deterministic, graded, and still playable.
| 15 | 18 | 7 | 5 | 16 | ||||
| 17 | 21 | 5 | 9 | |||||
| 16 | 13 | 19 | ||||||
| 17 | 9 | 18 | 8 | 19 | ||||
| 5 | 15 | |||||||
| 12 | 6 | 3 | 20 | 21 | ||||
| 8 | 4 | |||||||
| 19 | 21 | 14 | 8 | |||||
| 1 | 6 | 17 | 3 | 2 |
What it takes to solve
Our grader solved this puzzle in 133 steps. Every technique it needed, in ladder order:
- Naked single× 54
- Hidden single× 25
- 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 September 7, 2026: the daily classic.