Verified daily Sudoku challenge
Daily Sudoku for July 23, 2026
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Available through: August 15, 2026
Four verified puzzles
Easy
| 5 | | 7 | | 2 | | 4 | | |
| 1 | | 8 | 4 | | 5 | | 7 | |
| | | | | | | | | |
| | 8 | 2 | 1 | | | | 3 | |
| | | | 2 | 3 | 6 | | | |
| | 1 | | | | 8 | 9 | 5 | |
| | | | | | | | | |
| | 7 | | 3 | | 2 | 8 | | 9 |
| | | 1 | | 6 | | 2 | | 5 |
- Puzzle ID
LDI0-092664e4242c6a054dbb503aa2fe37b2ca984621- Clue count
- 29
- Unique solution
- Verified
- LDI v0 score
- 0
- Tier
- Easy
- Hardest technique
- Naked Single
- Logical steps
- 52
Verified key step: Naked Single: place 9 at row 2, column 5.
Medium
| 3 | | | | 1 | 9 | 5 | | |
| | | | | 8 | 5 | | | 9 |
| | | | | | 7 | 4 | 8 | |
| 9 | | 3 | | | | | | |
| | 7 | | | | 1 | | | |
| 4 | | | | | | 7 | | 2 |
| 2 | | | | 9 | 6 | | | |
| 8 | | 7 | | | | | 2 | 4 |
| 6 | | | 2 | | | | | |
- Puzzle ID
LDI0-1be7f58bcb0e751bbb6c78aecfc059b54f893573- Clue count
- 26
- Unique solution
- Verified
- LDI v0 score
- 21
- Tier
- Medium
- Hardest technique
- Hidden Single
- Logical steps
- 55
Verified key step: Naked Single: place 5 at row 5, column 1.
Hard
| | 1 | | | | | | 3 | 4 |
| 3 | | | | 2 | | 5 | | |
| 7 | 2 | | 5 | 3 | | | | |
| | 6 | | | 9 | 2 | | | |
| | | 7 | | | | 6 | | |
| | | | 3 | 6 | | | 4 | |
| | | | | 8 | 7 | | 5 | 2 |
| | | 2 | | 5 | | | | 6 |
| 8 | 4 | | | | | | 7 | |
- Puzzle ID
LDI0-1604bfda25ded3395bbdafe680fbc1ec598d7194- Clue count
- 28
- Unique solution
- Verified
- LDI v0 score
- 32
- Tier
- Hard
- Hardest technique
- Locked Candidates
- Logical steps
- 54
Verified key step: Naked Single: place 7 at row 1, column 5.
Expert
| | | | | | | | 1 | 5 |
| | | | 6 | 9 | | 8 | | 7 |
| 1 | | | 8 | | | | 9 | |
| | 5 | | | | | 3 | | |
| | | 1 | | | 9 | 4 | | |
| | 6 | 7 | 2 | | 8 | | | |
| 3 | 4 | | | | | | | 8 |
| | | | | | 2 | 1 | | 4 |
| | | | | 7 | | | | |
- Puzzle ID
LDI0-17ab0fdee343d133f6081557667d6e21c105c133- Clue count
- 25
- Unique solution
- Verified
- LDI v0 score
- 87
- Tier
- Expert
- Hardest technique
- XY-Wing
- Logical steps
- 62
Verified key step: Naked Single: place 5 at row 6, column 8.
2026-07-23 · LDI v0
Play this dated challenge
LDI v0
Verified puzzle facts
- Puzzle ID
LDI0-092664e4242c6a054dbb503aa2fe37b2ca984621- LDI score (0–100)
- 0
- Clue count
- 29
- Logical steps
- 52
- Hardest technique
- Naked Single
Clue count is a board fact, not the difficulty verdict. The tier comes from this published LDI version.