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Daily Sudoku for October 18, 2026

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The daily sudoku for October 18, 2026 is a Newbie puzzle with 37 clues and an SE rating of 2.3. 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 Newbie daily sudoku for October 18, 2026.
c1c2c3c4c5c6c7c8c9
r15834
r221957
r3698
r42456
r557612
r667394
r726843
r897251
r95
Open today’s daily challenge in the app
Difficulty
Newbie
SE rating
2.3
Solution steps
44

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 and Hidden Single. 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 44 steps
  1. The Hidden Single places 7 in r1c1. Hidden Single
  2. The Hidden Single places 6 in r2c2. Hidden Single
  3. The Hidden Single places 6 in r1c7. Hidden Single
  4. The Hidden Single places 2 in r1c3. Hidden Single
  5. The Hidden Single places 9 in r1c2. Hidden Single
  6. The Full House places 1 in r1c9. Full House
  7. The Hidden Single places 3 in r2c1. Hidden Single
  8. The Hidden Single places 8 in r2c3. Hidden Single
  9. The Full House places 4 in r2c6. Full House
  10. The Full House places 7 in r3c4. Full House
  11. The Hidden Single places 5 in r3c2. Hidden Single
  12. The Hidden Single places 2 in r3c8. Hidden Single
  13. The Full House places 3 in r3c9. Full House
  14. The Hidden Single places 3 in r4c8. Hidden Single
  15. The Hidden Single places 9 in r4c3. Hidden Single
  16. The Hidden Single places 1 in r3c3. Hidden Single
  17. The Full House places 4 in r3c1. Full House
  18. The Full House places 4 in r5c3. Full House
  19. The Hidden Single places 1 in r9c4. Hidden Single
  20. The Hidden Single places 1 in r4c1. Hidden Single
  21. The Full House places 8 in r9c1. Full House
  22. The Full House places 8 in r5c2. Full House
  23. The Hidden Single places 6 in r8c4. Hidden Single
  24. The Full House places 3 in r5c4. Full House
  25. The Full House places 9 in r5c8. Full House
  26. The Hidden Single places 9 in r9c5. Hidden Single
  27. The Hidden Single places 1 in r6c6. Hidden Single
  28. The Hidden Single places 5 in r6c9. Hidden Single
  29. The Hidden Single places 5 in r7c6. Hidden Single
  30. The Hidden Single places 2 in r9c7. Hidden Single
  31. The Full House places 7 in r4c7. Full House
  32. The Full House places 8 in r4c6. Full House
  33. The Full House places 7 in r9c6. Full House
  34. The Full House places 2 in r6c5. Full House
  35. The Full House places 3 in r8c5. Full House
  36. The Full House places 8 in r6c8. Full House
  37. The Hidden Single places 3 in r9c2. Hidden Single
  38. The Hidden Single places 8 in r8c9. Hidden Single
  39. The Full House places 4 in r8c2. Full House
  40. The Full House places 1 in r7c2. Full House
  41. The Naked Single places 7 in r7c8. Naked Single
  42. The Full House places 9 in r7c9. Full House
  43. The Full House places 6 in r9c8. Full House
  44. The Full House places 4 in r9c9. Full House
Show the completed grid
The completed grid for October 18, 2026.
c1c2c3c4c5c6c7c8c9
r1792583641
r2368214957
r3451769823
r4129458736
r5584376192
r6673921485
r7216845379
r8947632518
r9835197264

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.