Verified daily Sudoku challenge
Daily Sudoku for July 18, 2026
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Available through: August 15, 2026
Four verified puzzles
Easy
| 8 | | | | | | | 3 | |
| | | | | | 3 | | 7 | 2 |
| | 7 | 3 | 5 | | | 4 | | |
| | | | | 1 | | 9 | 6 | 5 |
| | | 1 | | | | 8 | | |
| 5 | 6 | 4 | | 2 | | | | |
| | | 7 | | | 2 | 3 | 5 | |
| 1 | 8 | | 4 | | | | | |
| | 3 | | | | | | | 6 |
- Puzzle ID
LDI0-04fcf4e1cc46c9a1a088602ac4200e019c307a70- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 6
- Tier
- Easy
- Hardest technique
- Hidden Single
- Logical steps
- 53
Verified key step: Naked Single: place 2 at row 4, column 2.
Medium
| 1 | | | | 9 | 4 | | 6 | |
| 4 | 5 | | | | | | 2 | |
| | 3 | 7 | | | | | | |
| | 4 | | | 7 | | 5 | | |
| | | | 5 | | | 4 | | |
| | | | | | | | 9 | 2 |
| | | | 7 | | | | | |
| 5 | 7 | 2 | | | 1 | | 3 | |
| | 9 | 3 | | | 8 | | 4 | |
- Puzzle ID
LDI0-070df980bcdfc6460f97f83e5c52a7a919daf6c5- Clue count
- 26
- Unique solution
- Verified
- LDI v0 score
- 19
- Tier
- Medium
- Hardest technique
- Locked Candidates
- Logical steps
- 56
Verified key step: Naked Single: place 8 at row 1, column 3.
Hard
| | | | 3 | | | 7 | 1 | |
| | | | 4 | 9 | | | | 3 |
| | 2 | | | 7 | | | 8 | |
| | 9 | | | | 7 | 6 | | |
| 3 | 6 | | | 2 | | | | |
| 8 | | | | | 9 | 1 | | |
| | | | | | 4 | | | 6 |
| | | 4 | | | | 9 | 7 | |
| | | 7 | | | | 8 | | |
- Puzzle ID
LDI0-08c40d6a163082ff80ce802ee1cb1b4a7b906caf- Clue count
- 25
- Unique solution
- Verified
- LDI v0 score
- 22
- Tier
- Hard
- Hardest technique
- Hidden Single
- Logical steps
- 56
Verified key step: Hidden Single: place 3 at row 3, column 3.
Expert
| 5 | 3 | | | | | | | |
| | | | | 5 | | 4 | | |
| | | | 7 | | | | | 2 |
| | 6 | | 2 | | | 3 | | |
| | | 4 | | | 6 | | | 8 |
| | | 1 | | | 9 | | | 7 |
| 6 | 8 | | | | 7 | | | |
| 7 | | | | 1 | | | 4 | 9 |
| 1 | | | | | | | 2 | |
- Puzzle ID
LDI0-0a49699ec02f55dac179fe08d81a5a32739ada01- Clue count
- 24
- Unique solution
- Verified
- LDI v0 score
- 95
- Tier
- Expert
- Hardest technique
- XY-Wing
- Logical steps
- 65
Verified key step: Hidden Single: place 7 at row 9, column 7.
2026-07-18 · LDI v0
Play this dated challenge
LDI v0
Verified puzzle facts
- Puzzle ID
LDI0-04fcf4e1cc46c9a1a088602ac4200e019c307a70- LDI score (0–100)
- 6
- Clue count
- 28
- Logical steps
- 53
- Hardest technique
- Hidden Single
Clue count is a board fact, not the difficulty verdict. The tier comes from this published LDI version.