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Daily Sudoku for September 23, 2026

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The daily sudoku for September 23, 2026 is a Hard puzzle with 26 clues and an SE rating of 3.4. 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 23, 2026.
c1c2c3c4c5c6c7c8c9
r1431
r285
r3312
r462
r536
r6237
r71958
r83974
r9753
Open this puzzle in the app
Difficulty
Hard
SE rating
3.4
Solution steps
59

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 and Finned X-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 59 steps
  1. The Hidden Single places 3 in r2c6. Hidden Single
  2. The Hidden Single places 1 in r2c5. Hidden Single
  3. The Hidden Single places 4 in r2c9. Hidden Single
  4. The Hidden Single places 3 in r4c9. Hidden Single
  5. The Hidden Single places 3 in r7c4. Hidden Single
  6. The Hidden Single places 7 in r7c7. Hidden Single
  7. The Hidden Single places 5 in r8c9. Hidden Single
  8. The Hidden Single places 4 in r9c2. Hidden Single
  9. The Naked Single places 7 in r2c2. Naked Single
  10. The Hidden Single places 7 in r4c3. Hidden Single
  11. The Hidden Single places 1 in r6c3. Hidden Single
  12. The Hidden Single places 7 in r5c6. Hidden Single
  13. The Hidden Single places 7 in r1c4. Hidden Single
  14. The Hidden Single places 7 in r3c8. Hidden Single
  15. The Hidden Single places 2 in r9c4. Hidden Single
  16. The Hidden Single places 1 in r4c4. Hidden Single
  17. The Hidden Single places 2 in r5c5. Hidden Single
  18. The Hidden Single places 8 in r4c5. Hidden Single
  19. The Hidden Single places 2 in r1c6. Hidden Single
  20. The Hidden Single places 2 in r7c9. Hidden Single
  21. The Pointing Pair removes 9 from r3c6. Pointing Pair
  22. The Pointing Triple removes 9 from r1c1, r2c1. Pointing Triple
  23. The Box Line Reduction removes 6 from r8c6, r9c6. Box Line Reduction
  24. The Finned X-Wing removes 8 from r5c9. Finned X-Wing
  25. The Hidden Single places 8 in r3c9. Hidden Single
  26. The Hidden Single places 6 in r9c9. Hidden Single
  27. The Full House places 9 in r5c9. Full House
  28. The Hidden Single places 9 in r1c7. Hidden Single
  29. The Full House places 6 in r2c8. Full House
  30. The Hidden Single places 9 in r2c3. Hidden Single
  31. The Full House places 2 in r2c1. Full House
  32. The Hidden Single places 9 in r3c5. Hidden Single
  33. The Hidden Single places 2 in r8c3. Hidden Single
  34. The Hidden Single places 4 in r7c5. Hidden Single
  35. The Full House places 6 in r1c5. Full House
  36. The Full House places 6 in r7c6. Full House
  37. The Hidden Single places 6 in r8c1. Hidden Single
  38. The Full House places 8 in r9c3. Full House
  39. The Full House places 6 in r3c3. Full House
  40. The Hidden Single places 6 in r6c7. Hidden Single
  41. The Hidden Single places 8 in r6c1. Hidden Single
  42. The Hidden Single places 8 in r1c2. Hidden Single
  43. The Full House places 5 in r1c1. Full House
  44. The Full House places 5 in r5c2. Full House
  45. The Hidden Single places 9 in r4c1. Hidden Single
  46. The Full House places 4 in r5c1. Full House
  47. The Hidden Single places 5 in r4c6. Hidden Single
  48. The Full House places 4 in r4c7. Full House
  49. The Hidden Single places 5 in r3c4. Hidden Single
  50. The Full House places 4 in r3c6. Full House
  51. The Full House places 4 in r6c4. Full House
  52. The Full House places 9 in r6c6. Full House
  53. The Full House places 5 in r6c8. Full House
  54. The Hidden Single places 8 in r5c7. Hidden Single
  55. The Full House places 1 in r5c8. Full House
  56. The Full House places 1 in r8c7. Full House
  57. The Full House places 8 in r8c6. Full House
  58. The Full House places 1 in r9c6. Full House
  59. The Full House places 9 in r9c8. Full House
Show the completed grid
The completed grid for September 23, 2026.
c1c2c3c4c5c6c7c8c9
r1584762931
r2279813564
r3316594278
r4967185423
r5453627819
r6821439657
r7195346782
r8632978145
r9748251396

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.