Daily Killer Sudoku September 12, 2026
The same puzzle everyone got on September 12, 2026 — deterministic, graded, and still playable.
| 8 | 15 | 15 | 2 | 14 | 9 | 5 | ||
| 12 | 15 | |||||||
| 7 | 8 | 14 | 13 | 11 | 199 | |||
| 13 | 16 | 24 | ||||||
| 14 | 9 | |||||||
| 16 | 16 | 17 | ||||||
| 12 | 18 | 15 | 13 | |||||
| 25 | 3 | 16 | ||||||
| 4 | 12 |
What it takes to solve
Our grader solved this puzzle in 151 steps. Every technique it needed, in ladder order:
- Naked single× 58
- Hidden single× 21
- Naked pair× 4
- Hidden pair× 1
- Cage combinations× 67
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 12, 2026: the daily classic.