Daily Killer Sudoku August 13, 2026
The same puzzle everyone got on August 13, 2026 — deterministic, graded, and still playable.
| 9 | 18 | 13 | 13 | 10 | 14 | 17 | ||
| 20 | 7 | 12 | 20 | 2 | ||||
| 11 | 12 | 10 | 12 | |||||
| 18 | 12 | 9 | ||||||
| 18 | 3 | 21 | 11 | 7 | ||||
| 2 | 16 | |||||||
| 11 | 13 | 6 | 13 | |||||
| 16 | 9 | 20 |
What it takes to solve
Our grader solved this puzzle in 189 steps. Every technique it needed, in ladder order:
- Naked single× 56
- Hidden single× 25
- Naked pair× 5
- Hidden pair× 2
- Pointing pair× 4
- Cage combinations× 89
- Forcing chain× 7
- Almost Locked Set× 1
Difficulty on Stillgrid is graded by the hardest technique a puzzle actually requires — this one earns Nightmare. How the technique ladder works.
Stuck on a cage? The killer sudoku calculator lists every combination a sum can take.
Also on August 13, 2026: the daily classic. Or jump to today's killer daily.