7
3
6
1
9
9
1
1
7
8
3
6
9
2
6
4
6
7
9
4
2
5
2
9
7

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Hidden Single, Full House, Skyscraper, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 2 (Naked Single)
  2. Row 5 / Column 9 → 9 (Hidden Single)
  3. Row 2 / Column 1 → 9 (Hidden Single)
  4. Row 4 / Column 3 → 9 (Hidden Single)
  5. Row 7 / Column 6 → 9 (Hidden Single)
  6. Row 2 / Column 4 → 2 (Hidden Single)
  7. Row 3 / Column 9 → 7 (Hidden Single)
  8. Row 4 / Column 2 → 6 (Hidden Single)
  9. Row 3 / Column 3 → 6 (Hidden Single)
  10. Row 7 / Column 5 → 7 (Hidden Single)
  11. Row 4 / Column 4 → 7 (Hidden Single)
  12. Row 4 / Column 6 → 4 (Naked Single)
  13. Row 2 / Column 8 → 6 (Hidden Single)
  14. Row 6 / Column 2 → 3 (Hidden Single)
  15. Row 3 / Column 2 → 1 (Hidden Single)
  16. Row 2 / Column 6 → 7 (Hidden Single)
  17. Row 5 / Column 7 → 7 (Hidden Single)
  18. Row 7 / Column 9 → 6 (Hidden Single)
  19. Row 9 / Column 5 → 6 (Hidden Single)
  20. Row 6 / Column 4 → 5 (Hidden Single)
  21. Row 5 / Column 5 → 1 (Full House)
  22. Row 6 / Column 3 → 8 (Naked Single)
  23. Row 6 / Column 8 → 1 (Full House)
  24. Row 5 / Column 2 → 2 (Hidden Single)
  25. Row 3 / Column 6 → 8 (Hidden Single)
  26. Row 8 / Column 6 → 3 (Full House)
  27. Row 5 / Column 8 → 8 (Hidden Single)
  28. Row 8 / Column 4 → 1 (Hidden Single)
  29. Row 9 / Column 4 → 8 (Full House)
  30. Row 9 / Column 9 → 3 (Naked Single)
  31. Row 7 / Column 1 → 3 (Hidden Single)
  32. Row 1 / Column 1 → 8 (Hidden Single)
  33. Row 1 / Column 9 → 5 (Naked Single)
  34. Row 8 / Column 9 → 8 (Full House)
  35. Row 2 / Column 7 → 8 (Hidden Single)
  36. Row 7 / Column 2 → 8 (Hidden Single)
  37. Skyscraper: 4 in r2c2,r3c8 (connected by r8c28) => r3c1<>4
  38. W-Wing: 2/4 in r1c3,r9c1 connected by 4 in r5c13 => r3c1,r9c3<>2
  39. Row 3 / Column 1 → 5 (Naked Single)
  40. Row 2 / Column 2 → 4 (Naked Single)
  41. Row 1 / Column 3 → 2 (Full House)
  42. Row 2 / Column 5 → 5 (Full House)
  43. Row 8 / Column 2 → 5 (Full House)
  44. Row 8 / Column 8 → 4 (Full House)
  45. Row 5 / Column 1 → 4 (Naked Single)
  46. Row 5 / Column 3 → 5 (Full House)
  47. Row 9 / Column 1 → 2 (Full House)
  48. Row 7 / Column 3 → 1 (Naked Single)
  49. Row 7 / Column 7 → 5 (Full House)
  50. Row 9 / Column 7 → 1 (Full House)
  51. Row 9 / Column 3 → 4 (Full House)
  52. Row 3 / Column 8 → 3 (Naked Single)
  53. Row 4 / Column 8 → 5 (Full House)
  54. Row 4 / Column 7 → 3 (Full House)
  55. Row 1 / Column 7 → 4 (Naked Single)
  56. Row 1 / Column 5 → 3 (Full House)
  57. Row 3 / Column 5 → 4 (Full House)
  58. Row 3 / Column 7 → 2 (Full House)
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