Verified daily Sudoku challenge
Daily Sudoku for July 20, 2026
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Available through: August 15, 2026
Four verified puzzles
Easy
| 9 | | | | | 7 | | | |
| 6 | | | 1 | 2 | 3 | | | 7 |
| | | | 9 | | | 5 | | 8 |
| | | 1 | 4 | | | | 2 | |
| 2 | 7 | | | | | | 8 | 5 |
| | 6 | | | | 2 | 1 | | |
| 3 | | 7 | | | 1 | | | |
| 5 | | | 7 | 6 | 4 | | | 1 |
| | | | 5 | | | | | 2 |
- Puzzle ID
LDI0-065013383d36162c592454b7402ea39c30329c8f- Clue count
- 30
- Unique solution
- Verified
- LDI v0 score
- 0
- Tier
- Easy
- Hardest technique
- Naked Single
- Logical steps
- 51
Verified key step: Naked Single: place 4 at row 3, column 5.
Medium
| 9 | | 5 | | 6 | | | | |
| 4 | 7 | | 9 | | | 6 | | |
| | | | 5 | 8 | | | 2 | |
| 3 | 5 | | | | | | | |
| | 8 | | | 2 | | | 9 | |
| | | | | | | | 3 | 6 |
| | 9 | | | 7 | 8 | | | |
| | | 3 | | | 5 | | 4 | 9 |
| | | | | 9 | | 2 | | 5 |
- Puzzle ID
LDI0-128d4a9118d9c6af372f639c2923f394a353e782- Clue count
- 27
- Unique solution
- Verified
- LDI v0 score
- 16
- Tier
- Medium
- Hardest technique
- Hidden Single
- Logical steps
- 54
Verified key step: Naked Single: place 1 at row 8, column 5.
Hard
| 4 | | 8 | | 1 | 7 | | 9 | |
| 5 | | | | | 8 | | | |
| 6 | 7 | 2 | | | 4 | | | |
| | | 6 | | | 3 | | | 7 |
| | | | | | | | | |
| 1 | | | 5 | | | 8 | | |
| | | | 4 | | | 7 | 3 | 5 |
| | | | 6 | | | | | 8 |
| | 5 | | 7 | 8 | | 6 | | 1 |
- Puzzle ID
LDI0-0a9e4c1a9eaab3d9adcf9a410287a3b253214d78- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 23
- Tier
- Hard
- Hardest technique
- Hidden Single
- Logical steps
- 53
Verified key step: Naked Single: place 3 at row 1, column 2.
Expert
| | | | | | | | | 7 |
| | 9 | 1 | 5 | | | 8 | | |
| | 4 | | 2 | 6 | | | 9 | |
| | 5 | | 9 | | | 4 | | |
| | | | | | 3 | 9 | | |
| | | | | | | | 2 | 1 |
| 1 | 3 | | | 8 | | | | |
| 9 | | | 1 | | | 5 | 6 | |
| | | 8 | | | | | | |
- Puzzle ID
LDI0-1399d1cd52c5113e0b92f011f45986f36505cae7- Clue count
- 24
- Unique solution
- Verified
- LDI v0 score
- 85
- Tier
- Expert
- Hardest technique
- XY-Wing
- Logical steps
- 63
Verified key step: Hidden Single: place 9 at row 6, column 3.
2026-07-20 · LDI v0
Play this dated challenge
LDI v0
Verified puzzle facts
- Puzzle ID
LDI0-065013383d36162c592454b7402ea39c30329c8f- LDI score (0–100)
- 0
- Clue count
- 30
- Logical steps
- 51
- Hardest technique
- Naked Single
Clue count is a board fact, not the difficulty verdict. The tier comes from this published LDI version.