Verified daily Sudoku challenge
Daily Sudoku for July 19, 2026
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Available through: August 15, 2026
Four verified puzzles
Easy
| 6 | | | | | | 7 | | |
| | | | 2 | 8 | | | 9 | 5 |
| | 3 | | | | 6 | | | 2 |
| | | | | | | 3 | | 6 |
| | 6 | | 3 | | | 2 | | 1 |
| | | | 7 | | | | | 4 |
| 1 | 8 | | | | | | 3 | |
| | | 5 | 6 | 4 | | | | |
| 9 | | | | | | | | 7 |
- Puzzle ID
LDI0-05eb37fd1c6b9a048197bc1ec80b077aee56e335- Clue count
- 25
- Unique solution
- Verified
- LDI v0 score
- 14
- Tier
- Easy
- Hardest technique
- Hidden Single
- Logical steps
- 56
Verified key step: Naked Single: place 9 at row 7, column 9.
Medium
| | | | 1 | | | | | |
| | | 6 | 7 | 8 | | | 1 | |
| | 4 | | | 2 | 9 | | | |
| 4 | | | | | 3 | | 5 | 1 |
| 2 | | 3 | | | | 8 | | 4 |
| 5 | 1 | | 8 | | | | | 2 |
| | | | 6 | 9 | | | 7 | |
| | 9 | | | 3 | 7 | 6 | | |
| | | | | | 2 | | | |
- Puzzle ID
LDI0-0a74a5f40ac3197945ef2772661f4cb43cc3495e- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 15
- Tier
- Medium
- Hardest technique
- Hidden Single
- Logical steps
- 53
Verified key step: Hidden Single: place 2 at row 4, column 4.
Hard
| 5 | 3 | | | 9 | 7 | 4 | | 6 |
| | | | | | | | | 1 |
| | | 9 | 2 | 1 | | | | |
| 4 | | | | | | 6 | | |
| | 2 | | 1 | | 3 | | 5 | |
| | | 3 | | | | | | 8 |
| | | | | 2 | 8 | 1 | | |
| 6 | | | | | | | | |
| 3 | | 2 | 5 | 6 | | | 8 | 9 |
- Puzzle ID
LDI0-093ec9479ea64f1ba35441d47aa8c9c825a5eb50- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 31
- Tier
- Hard
- Hardest technique
- Locked Candidates
- Logical steps
- 55
Verified key step: Naked Single: place 8 at row 1, column 4.
Expert
| 7 | | 5 | | | | 8 | | |
| | | | | | 6 | | 5 | |
| 4 | 3 | | | 1 | | | | |
| 9 | 1 | | | | | | | 7 |
| | 8 | 6 | 1 | | 4 | 3 | 9 | |
| 3 | | | | | | | 4 | 8 |
| | | | | 4 | | | 8 | 5 |
| | 5 | | 3 | | | | | |
| | | 8 | | | | 2 | | 6 |
- Puzzle ID
LDI0-0dddb9c6143062277d8730db39026e7daf72a782- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 52
- Tier
- Expert
- Hardest technique
- XY-Wing
- Logical steps
- 54
Verified key step: Naked Single: place 2 at row 5, column 9.
2026-07-19 · LDI v0
Play this dated challenge
LDI v0
Verified puzzle facts
- Puzzle ID
LDI0-05eb37fd1c6b9a048197bc1ec80b077aee56e335- LDI score (0–100)
- 14
- Clue count
- 25
- Logical steps
- 56
- Hardest technique
- Hidden Single
Clue count is a board fact, not the difficulty verdict. The tier comes from this published LDI version.