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Daily Sudoku for September 15, 2026

Updated

The daily sudoku for September 15, 2026 is a Hard puzzle with 26 clues and an SE rating of 4.4. It is the same grid the Suuudokuuu app serves as its daily challenge that day, everywhere in the world: the board is forged from the UTC date alone, so the app, this page and the archive all arrive at it independently.

The Hard daily sudoku for September 15, 2026.
c1c2c3c4c5c6c7c8c9
r1764
r2163
r3379
r4591
r5235
r623
r7534
r848
r91457
Open this puzzle in the app
Difficulty
Hard
SE rating
4.4
Solution steps
62

Techniques this puzzle needs

Solved the way the SE rating measures it, reaching for the cheapest technique that still makes progress, this puzzle needs Full House, Naked Single, Hidden Single, Pointing Pair, Pointing Triple, Box Line Reduction, Sashimi X-Wing, XY-Wing and W-Wing. The hardest of them sets its rating; the sudoku difficulty rating guide explains the scale.

Step-by-step solution

Every placement and elimination below is proved by a named technique, in the order the engine found them. Each technique links to its guide. Stuck on a different puzzle? The step-by-step solver narrates any grid you paste.

Show all 62 steps
  1. The Hidden Single places 3 in r1c3. Hidden Single
  2. The Hidden Single places 7 in r6c2. Hidden Single
  3. The Hidden Single places 3 in r4c5. Hidden Single
  4. The Hidden Single places 2 in r4c4. Hidden Single
  5. The Hidden Single places 1 in r1c5. Hidden Single
  6. The Hidden Single places 7 in r5c6. Hidden Single
  7. The Hidden Single places 6 in r6c6. Hidden Single
  8. The Hidden Single places 4 in r4c7. Hidden Single
  9. The Hidden Single places 9 in r5c8. Hidden Single
  10. The Naked Single places 8 in r5c5. Naked Single
  11. The Hidden Single places 8 in r1c4. Hidden Single
  12. The Hidden Single places 5 in r1c8. Hidden Single
  13. The Hidden Single places 9 in r1c6. Hidden Single
  14. The Full House places 2 in r1c2. Full House
  15. The Hidden Single places 5 in r3c3. Hidden Single
  16. The Hidden Single places 5 in r2c5. Hidden Single
  17. The Hidden Single places 5 in r6c4. Hidden Single
  18. The Hidden Single places 5 in r8c9. Hidden Single
  19. The Hidden Single places 3 in r8c1. Hidden Single
  20. The Hidden Single places 3 in r9c9. Hidden Single
  21. The Naked Single places 4 in r5c4. Naked Single
  22. The Full House places 9 in r6c5. Full House
  23. The Pointing Pair removes 6 from r7c3, r8c3, r9c3. Pointing Pair
  24. The Pointing Pair removes 1 from r7c9. Pointing Pair
  25. The Box Line Reduction removes 9 from r7c1, r7c3, r8c3. Box Line Reduction
  26. The Sashimi X-Wing removes 8 from r7c1, r7c3. Sashimi X-Wing
  27. The Pointing Triple removes 8 from r9c8. Pointing Triple
  28. The W-Wing removes 2 from r7c9. W-Wing
  29. The Hidden Single places 2 in r2c9. Hidden Single
  30. The Hidden Single places 7 in r2c8. Hidden Single
  31. The Hidden Single places 2 in r3c6. Hidden Single
  32. The Full House places 4 in r2c6. Full House
  33. The Hidden Single places 4 in r3c1. Hidden Single
  34. The Hidden Single places 6 in r3c2. Hidden Single
  35. The Full House places 8 in r9c2. Full House
  36. The Hidden Single places 4 in r6c3. Hidden Single
  37. The Hidden Single places 7 in r4c9. Hidden Single
  38. The XY-Wing removes 8 from r6c9. XY-Wing
  39. The Hidden Single places 8 in r6c1. Hidden Single
  40. The Full House places 1 in r6c9. Full House
  41. The Hidden Single places 1 in r7c1. Hidden Single
  42. The Hidden Single places 6 in r9c1. Hidden Single
  43. The Full House places 9 in r2c1. Full House
  44. The Full House places 8 in r2c3. Full House
  45. The Hidden Single places 1 in r5c3. Hidden Single
  46. The Full House places 6 in r5c9. Full House
  47. The Full House places 8 in r7c9. Full House
  48. The Full House places 6 in r4c3. Full House
  49. The Full House places 8 in r4c8. Full House
  50. The Hidden Single places 8 in r3c7. Hidden Single
  51. The Full House places 1 in r3c8. Full House
  52. The Hidden Single places 9 in r9c3. Hidden Single
  53. The Full House places 2 in r9c8. Full House
  54. The Full House places 6 in r8c8. Full House
  55. The Hidden Single places 6 in r7c5. Hidden Single
  56. The Full House places 2 in r8c5. Full House
  57. The Hidden Single places 2 in r7c3. Hidden Single
  58. The Full House places 7 in r8c3. Full House
  59. The Hidden Single places 7 in r7c4. Hidden Single
  60. The Full House places 9 in r8c4. Full House
  61. The Full House places 9 in r7c7. Full House
  62. The Full House places 1 in r8c7. Full House
Show the completed grid
The completed grid for September 15, 2026.
c1c2c3c4c5c6c7c8c9
r1723819654
r2918654372
r3465372819
r4596231487
r5231487596
r6874596231
r7152763948
r8347928165
r9689145723

More daily puzzles

Every day since the archive began has its own page. Browse the Daily sudoku archive, September 2026, or go back to today’s daily sudoku.