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Daily Sudoku for September 18, 2026

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The daily sudoku for September 18, 2026 is a Medium puzzle with 27 clues and an SE rating of 2.6. 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 Medium daily sudoku for September 18, 2026.
c1c2c3c4c5c6c7c8c9
r159
r256
r39348
r48253
r586
r63954
r7198
r8567
r9735
Open this puzzle in the app
Difficulty
Medium
SE rating
2.6
Solution steps
55

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 and Pointing Pair. 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 55 steps
  1. The Hidden Single places 9 in r2c9. Hidden Single
  2. The Hidden Single places 3 in r2c2. Hidden Single
  3. The Hidden Single places 3 in r8c1. Hidden Single
  4. The Hidden Single places 5 in r3c7. Hidden Single
  5. The Hidden Single places 9 in r4c8. Hidden Single
  6. The Hidden Single places 3 in r5c5. Hidden Single
  7. The Hidden Single places 8 in r6c7. Hidden Single
  8. The Hidden Single places 8 in r2c3. Hidden Single
  9. The Hidden Single places 8 in r1c8. Hidden Single
  10. The Hidden Single places 3 in r1c9. Hidden Single
  11. The Hidden Single places 4 in r2c7. Hidden Single
  12. The Hidden Single places 8 in r8c2. Hidden Single
  13. The Hidden Single places 8 in r9c5. Hidden Single
  14. The Hidden Single places 9 in r8c5. Hidden Single
  15. The Hidden Single places 3 in r7c8. Hidden Single
  16. The Hidden Single places 2 in r3c9. Hidden Single
  17. The Full House places 1 in r4c9. Full House
  18. The Hidden Single places 6 in r1c4. Hidden Single
  19. The Naked Single places 4 in r8c3. Naked Single
  20. The Hidden Single places 4 in r9c8. Hidden Single
  21. The Pointing Pair removes 6 from r7c2, r7c3. Pointing Pair
  22. The Naked Single places 5 in r7c3. Naked Single
  23. The Hidden Single places 5 in r5c2. Hidden Single
  24. The Naked Single places 2 in r7c2. Naked Single
  25. The Hidden Single places 2 in r1c1. Hidden Single
  26. The Hidden Single places 4 in r1c2. Hidden Single
  27. The Hidden Single places 4 in r5c1. Hidden Single
  28. The Hidden Single places 9 in r9c1. Hidden Single
  29. The Full House places 6 in r9c3. Full House
  30. The Hidden Single places 1 in r6c2. Hidden Single
  31. The Full House places 6 in r4c2. Full House
  32. The Hidden Single places 6 in r3c1. Hidden Single
  33. The Full House places 7 in r6c1. Full House
  34. The Full House places 9 in r5c3. Full House
  35. The Hidden Single places 4 in r4c4. Hidden Single
  36. The Full House places 7 in r4c5. Full House
  37. The Hidden Single places 1 in r5c6. Hidden Single
  38. The Hidden Single places 1 in r2c5. Hidden Single
  39. The Hidden Single places 1 in r9c4. Hidden Single
  40. The Full House places 2 in r9c7. Full House
  41. The Full House places 1 in r8c8. Full House
  42. The Full House places 2 in r8c6. Full House
  43. The Hidden Single places 2 in r2c4. Hidden Single
  44. The Full House places 7 in r2c6. Full House
  45. The Full House places 7 in r7c4. Full House
  46. The Hidden Single places 1 in r3c3. Hidden Single
  47. The Full House places 7 in r3c8. Full House
  48. The Full House places 7 in r1c3. Full House
  49. The Full House places 1 in r1c7. Full House
  50. The Full House places 7 in r5c7. Full House
  51. The Full House places 2 in r5c8. Full House
  52. The Hidden Single places 2 in r6c5. Hidden Single
  53. The Full House places 6 in r7c5. Full House
  54. The Full House places 6 in r6c6. Full House
  55. The Full House places 4 in r7c6. Full House
Show the completed grid
The completed grid for September 18, 2026.
c1c2c3c4c5c6c7c8c9
r1247659183
r2538217469
r3691348572
r4862475391
r5459831726
r6713926854
r7125764938
r8384592617
r9976183245

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.