Daily Killer Sudoku October 20, 2026
The same puzzle everyone got on October 20, 2026 — deterministic, graded, and still playable.
| 19 | 22 | 17 | 3 | |||||
| 8 | 17 | 13 | 2 | 21 | ||||
| 10 | 14 | 5 | ||||||
| 7 | 18 | 1 | 17 | 2 | ||||
| 14 | 5 | 26 | 4 | 14 | ||||
| 11 | 2 | 9 | ||||||
| 6 | 16 | 23 | 4 | 22 | ||||
| 6 | 7 | |||||||
| 4 | 24 | 7 | 4 | 6 |
What it takes to solve
Our grader solved this puzzle in 127 steps. Every technique it needed, in ladder order:
- Naked single× 55
- Hidden single× 25
- Cage combinations× 47
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 20, 2026: the daily classic.