Daily Killer Sudoku October 13, 2026
The same puzzle everyone got on October 13, 2026 — deterministic, graded, and still playable.
| 11 | 15 | 12 | 6 | 19 | 9 | |||
| 12 | 8 | 18 | ||||||
| 4 | 1 | 20 | 11 | |||||
| 22 | 12 | 20 | 18 | |||||
| 10 | 14 | |||||||
| 7 | 21 | 3 | 23 | |||||
| 14 | 17 | 4 | ||||||
| 21 | 12 | 9 | 16 | |||||
| 1 | 6 | 9 |
What it takes to solve
Our grader solved this puzzle in 146 steps. Every technique it needed, in ladder order:
- Naked single× 72
- Hidden single× 9
- Cage combinations× 65
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 13, 2026: the daily classic.