Daily Killer Sudoku October 12, 2026
The same puzzle everyone got on October 12, 2026 — deterministic, graded, and still playable.
| 16 | 12 | 3 | 11 | 18 | ||||
| 23 | 23 | 11 | ||||||
| 11 | 4 | 10 | 1 | 23 | ||||
| 9 | 8 | |||||||
| 11 | 13 | 11 | 11 | 7 | ||||
| 11 | 21 | 9 | 3 | 11 | ||||
| 2 | 12 | 17 | ||||||
| 14 | 18 | 16 | 5 | 21 | ||||
| 9 |
What it takes to solve
Our grader solved this puzzle in 145 steps. Every technique it needed, in ladder order:
- Naked single× 62
- Hidden single× 19
- Cage combinations× 64
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 12, 2026: the daily classic.