Daily Killer Sudoku October 18, 2026
The same puzzle everyone got on October 18, 2026 — deterministic, graded, and still playable.
| 9 | 9 | 10 | 17 | |||||
| 19 | 1 | 11 | 9 | 17 | ||||
| 2 | 21 | 3 | 18 | |||||
| 8 | 12 | 8 | 13 | |||||
| 12 | 11 | 18 | 14 | |||||
| 15 | 6 | 29 | ||||||
| 14 | 6 | 7 | 12 | 11 | 12 | |||
| 5 | 20 | 18 | 8 | |||||
| 3 |
What it takes to solve
Our grader solved this puzzle in 147 steps. Every technique it needed, in ladder order:
- Naked single× 58
- Hidden single× 22
- Naked pair× 1
- Cage combinations× 66
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 October 18, 2026: the daily classic.