Daily Killer Sudoku May 31, 2026
The same puzzle everyone got on May 31, 2026 — deterministic, graded, and still playable.
| 12 | 12 | 15 | 8 | 21 | ||||
| 2 | 15 | 21 | 9 | |||||
| 9 | 15 | 21 | ||||||
| 4 | 20 | 2 | 6 | |||||
| 10 | 15 | 20 | 18 | 14 | 1 | |||
| 19 | ||||||||
| 1 | 11 | 18 | 9 | 8 | ||||
| 16 | 7 | 7 | 21 | 9 | ||||
| 10 |
What it takes to solve
Our grader solved this puzzle in 147 steps. Every technique it needed, in ladder order:
- Naked single× 60
- Hidden single× 20
- Cage combinations× 67
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 May 31, 2026: the daily classic. Or jump to today's killer daily.