Daily Killer Sudoku September 20, 2026
The same puzzle everyone got on September 20, 2026 — deterministic, graded, and still playable.
| 23 | 11 | 13 | 9 | 11 | 1 | |||
| 12 | 10 | 12 | 19 | |||||
| 22 | ||||||||
| 17 | 16 | 7 | 13 | |||||
| 10 | 4 | 5 | 15 | 17 | ||||
| 6 | 17 | 5 | 16 | 21 | ||||
| 1 | 12 | |||||||
| 14 | 19 | 11 | 14 | |||||
| 10 | 12 |
What it takes to solve
Our grader solved this puzzle in 149 steps. Every technique it needed, in ladder order:
- Naked single× 62
- Hidden single× 19
- Naked pair× 2
- 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 September 20, 2026: the daily classic.