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Daily Sudoku for October 17, 2026

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The daily sudoku for October 17, 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 October 17, 2026.
c1c2c3c4c5c6c7c8c9
r18
r249
r356
r45764
r5245
r6127
r7793
r82367
r96875
Open today’s daily challenge in the app
Difficulty
Hard
SE rating
4.4
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, 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 59 steps
  1. The Hidden Single places 4 in r6c1. Hidden Single
  2. The Hidden Single places 5 in r6c4. Hidden Single
  3. The Hidden Single places 7 in r5c3. Hidden Single
  4. The Hidden Single places 6 in r1c3. Hidden Single
  5. The Hidden Single places 6 in r2c5. Hidden Single
  6. The Hidden Single places 6 in r6c2. Hidden Single
  7. The Hidden Single places 8 in r4c2. Hidden Single
  8. The Hidden Single places 2 in r3c3. Hidden Single
  9. The Hidden Single places 3 in r4c3. Hidden Single
  10. The Full House places 9 in r5c1. Full House
  11. The Hidden Single places 9 in r8c3. Hidden Single
  12. The Full House places 5 in r7c3. Full House
  13. The Hidden Single places 6 in r5c7. Hidden Single
  14. The Hidden Single places 5 in r8c5. Hidden Single
  15. The Hidden Single places 9 in r1c6. Hidden Single
  16. The Hidden Single places 9 in r3c2. Hidden Single
  17. The Hidden Single places 9 in r6c5. Hidden Single
  18. The Hidden Single places 3 in r6c8. Hidden Single
  19. The Full House places 8 in r6c7. Full House
  20. The Hidden Single places 6 in r7c9. Hidden Single
  21. The Hidden Single places 9 in r4c7. Hidden Single
  22. The Hidden Single places 2 in r4c8. Hidden Single
  23. The Full House places 1 in r4c4. Full House
  24. The Full House places 1 in r5c8. Full House
  25. The Hidden Single places 2 in r7c5. Hidden Single
  26. The Hidden Single places 9 in r9c8. Hidden Single
  27. The Hidden Single places 2 in r9c9. Hidden Single
  28. The Naked Single places 3 in r9c4. Naked Single
  29. The Pointing Pair removes 1 from r1c2, r2c2. Pointing Pair
  30. The Pointing Pair removes 4 from r9c5. Pointing Pair
  31. The Hidden Single places 4 in r9c2. Hidden Single
  32. The Full House places 1 in r9c5. Full House
  33. The Full House places 1 in r7c2. Full House
  34. The Hidden Single places 1 in r2c6. Hidden Single
  35. The Hidden Single places 1 in r3c1. Hidden Single
  36. The Full House places 3 in r2c1. Full House
  37. The Hidden Single places 3 in r5c6. Hidden Single
  38. The Full House places 8 in r5c5. Full House
  39. The XY-Wing removes 7 from r1c7. XY-Wing
  40. The W-Wing removes 2 from r1c7, r2c4. W-Wing
  41. The Hidden Single places 2 in r1c4. Hidden Single
  42. The Hidden Single places 7 in r1c2. Hidden Single
  43. The Full House places 5 in r2c2. Full House
  44. The Hidden Single places 5 in r1c8. Hidden Single
  45. The Hidden Single places 2 in r2c7. Hidden Single
  46. The Hidden Single places 7 in r2c4. Hidden Single
  47. The Full House places 8 in r2c8. Full House
  48. The Full House places 8 in r3c4. Full House
  49. The Full House places 4 in r7c8. Full House
  50. The Full House places 8 in r7c6. Full House
  51. The Full House places 4 in r8c6. Full House
  52. The Hidden Single places 7 in r3c7. Hidden Single
  53. The Hidden Single places 4 in r3c5. Hidden Single
  54. The Full House places 3 in r3c9. Full House
  55. The Full House places 3 in r1c5. Full House
  56. The Hidden Single places 4 in r1c7. Hidden Single
  57. The Full House places 1 in r1c9. Full House
  58. The Full House places 1 in r8c7. Full House
  59. The Full House places 8 in r8c9. Full House
Show the completed grid
The completed grid for October 17, 2026.
c1c2c3c4c5c6c7c8c9
r1876239451
r2354761289
r3192845763
r4583176924
r5927483615
r6461592837
r7715928346
r8239654178
r9648317592

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.