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Daily Sudoku for October 9, 2026

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The daily sudoku for October 9, 2026 is a Hard puzzle with 26 clues and an SE rating of 4.2. 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 October 9, 2026.
c1c2c3c4c5c6c7c8c9
r139
r281
r32518
r4685
r517534
r68
r734
r81257
r9279
Open this puzzle in the app
Difficulty
Hard
SE rating
4.2
Solution steps
60

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, Naked Pair, Finned X-Wing and XY-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 60 steps
  1. The Hidden Single places 1 in r1c3. Hidden Single
  2. The Hidden Single places 5 in r1c7. Hidden Single
  3. The Hidden Single places 3 in r6c2. Hidden Single
  4. The Hidden Single places 8 in r7c2. Hidden Single
  5. The Hidden Single places 5 in r2c2. Hidden Single
  6. The Full House places 4 in r3c2. Full House
  7. The Hidden Single places 8 in r5c3. Hidden Single
  8. The Hidden Single places 3 in r4c5. Hidden Single
  9. The Hidden Single places 3 in r3c6. Hidden Single
  10. The Hidden Single places 5 in r9c6. Hidden Single
  11. The Hidden Single places 1 in r6c6. Hidden Single
  12. The Hidden Single places 1 in r4c7. Hidden Single
  13. The Hidden Single places 1 in r9c4. Hidden Single
  14. The Hidden Single places 8 in r1c4. Hidden Single
  15. The Hidden Single places 8 in r8c5. Hidden Single
  16. The Hidden Single places 1 in r7c9. Hidden Single
  17. The Hidden Single places 8 in r9c7. Hidden Single
  18. The Hidden Single places 3 in r8c3. Hidden Single
  19. The Hidden Single places 3 in r2c8. Hidden Single
  20. The Hidden Single places 3 in r9c9. Hidden Single
  21. The Hidden Single places 4 in r8c7. Hidden Single
  22. The Pointing Pair removes 7 from r2c4. Pointing Pair
  23. The Pointing Pair removes 6 from r7c1, r7c3, r7c5. Pointing Pair
  24. The Hidden Single places 6 in r8c6. Hidden Single
  25. The Full House places 9 in r8c1. Full House
  26. The Full House places 9 in r7c5. Full House
  27. The Hidden Single places 9 in r3c7. Hidden Single
  28. The Hidden Single places 7 in r3c1. Hidden Single
  29. The Full House places 6 in r3c5. Full House
  30. The Full House places 6 in r2c3. Full House
  31. The Hidden Single places 6 in r9c1. Hidden Single
  32. The Full House places 4 in r9c3. Full House
  33. The Hidden Single places 7 in r7c3. Hidden Single
  34. The Full House places 5 in r7c1. Full House
  35. The Hidden Single places 5 in r6c3. Hidden Single
  36. The Full House places 9 in r4c3. Full House
  37. The Naked Pair removes 4, 2 from r6c4, r6c7, r6c9. Naked Pair
  38. The Finned X-Wing removes 2 from r1c9. Finned X-Wing
  39. The XY-Wing removes 6 from r7c7. XY-Wing
  40. The Hidden Single places 6 in r7c8. Hidden Single
  41. The Full House places 2 in r7c7. Full House
  42. The Hidden Single places 6 in r1c9. Hidden Single
  43. The Hidden Single places 4 in r1c5. Hidden Single
  44. The Full House places 2 in r6c5. Full House
  45. The Hidden Single places 2 in r4c1. Hidden Single
  46. The Full House places 4 in r6c1. Full House
  47. The Hidden Single places 4 in r2c9. Hidden Single
  48. The Hidden Single places 2 in r2c6. Hidden Single
  49. The Hidden Single places 2 in r1c8. Hidden Single
  50. The Full House places 7 in r1c6. Full House
  51. The Full House places 9 in r5c6. Full House
  52. The Full House places 7 in r4c8. Full House
  53. The Full House places 4 in r4c4. Full House
  54. The Full House places 9 in r2c4. Full House
  55. The Full House places 7 in r2c7. Full House
  56. The Full House places 6 in r6c7. Full House
  57. The Naked Single places 6 in r5c4. Naked Single
  58. The Full House places 7 in r6c4. Full House
  59. The Full House places 2 in r5c9. Full House
  60. The Full House places 9 in r6c9. Full House
Show the completed grid
The completed grid for October 9, 2026.
c1c2c3c4c5c6c7c8c9
r1391847526
r2856912734
r3742563918
r4269438175
r5178659342
r6435721689
r7587394261
r8913286457
r9624175893

More daily puzzles

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