Daily Killer Sudoku September 18, 2026
The same puzzle everyone got on September 18, 2026 — deterministic, graded, and still playable.
| 19 | 2 | 22 | 10 | 14 | 16 | |||
| 3 | 9 | 5 | ||||||
| 10 | 4 | 12 | 26 | |||||
| 11 | 9 | 6 | 15 | 17 | ||||
| 8 | 9 | 9 | 20 | |||||
| 14 | 20 | 18 | 7 | 6 | ||||
| 5 | 4 | 12 | ||||||
| 20 | 13 | 14 | ||||||
| 5 | 16 |
What it takes to solve
Our grader solved this puzzle in 137 steps. Every technique it needed, in ladder order:
- Naked single× 56
- Hidden single× 24
- Cage combinations× 57
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 18, 2026: the daily classic. Or jump to today's killer daily.