Daily Killer Sudoku June 21, 2026
The same puzzle everyone got on June 21, 2026 — deterministic, graded, and still playable.
| 9 | 9 | 15 | 16 | 14 | ||||
| 137 | 3 | 4 | 19 | |||||
| 11 | 14 | 13 | 13 | |||||
| 23 | 5 | 7 | ||||||
| 7 | 11 | 21 | 16 | 17 | ||||
| 9 | 12 | |||||||
| 18 | 2 | 1 | 13 | 9 | 15 | |||
| 16 | 18 | 11 | 11 | |||||
| 10 |
What it takes to solve
Our grader solved this puzzle in 157 steps. Every technique it needed, in ladder order:
- Naked single× 67
- Hidden single× 13
- Naked pair× 3
- Cage combinations× 74
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 June 21, 2026: the daily classic. Or jump to today's killer daily.