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

This Sudoku Puzzle has 59 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Skyscraper, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 8 / Column 6 → 5 (Naked Single)
  2. Row 4 / Column 8 → 1 (Hidden Single)
  3. Row 2 / Column 9 → 7 (Hidden Single)
  4. Row 9 / Column 3 → 7 (Hidden Single)
  5. Row 8 / Column 4 → 7 (Hidden Single)
  6. Row 6 / Column 8 → 8 (Hidden Single)
  7. Row 2 / Column 4 → 1 (Hidden Single)
  8. Row 5 / Column 5 → 7 (Hidden Single)
  9. Row 5 / Column 3 → 1 (Hidden Single)
  10. Row 6 / Column 7 → 7 (Hidden Single)
  11. Row 4 / Column 6 → 8 (Hidden Single)
  12. Row 2 / Column 6 → 3 (Hidden Single)
  13. Row 1 / Column 4 → 5 (Naked Single)
  14. Row 6 / Column 6 → 9 (Naked Single)
  15. Row 5 / Column 6 → 6 (Full House)
  16. Row 3 / Column 4 → 9 (Naked Single)
  17. Row 4 / Column 4 → 2 (Naked Single)
  18. Row 6 / Column 4 → 3 (Full House)
  19. Row 4 / Column 5 → 5 (Full House)
  20. Row 4 / Column 2 → 9 (Full House)
  21. Row 5 / Column 9 → 9 (Hidden Single)
  22. Row 2 / Column 3 → 9 (Hidden Single)
  23. Row 5 / Column 7 → 3 (Hidden Single)
  24. Locked Candidates Type 1 (Pointing): 6 in b7 => r2c2<>6
  25. Skyscraper: 5 in r2c2,r5c1 (connected by r25c8) => r3c1,r6c2<>5
  26. Row 3 / Column 1 → 3 (Naked Single)
  27. Row 1 / Column 9 → 3 (Hidden Single)
  28. W-Wing: 8/6 in r1c7,r3c5 connected by 6 in r2c58 => r1c5,r3c79<>8
  29. Row 1 / Column 7 → 8 (Hidden Single)
  30. Row 7 / Column 7 → 5 (Naked Single)
  31. Row 3 / Column 5 → 8 (Hidden Single)
  32. Row 7 / Column 9 → 8 (Hidden Single)
  33. Row 8 / Column 9 → 4 (Hidden Single)
  34. Row 8 / Column 1 → 1 (Hidden Single)
  35. Skyscraper: 2 in r5c1,r8c2 (connected by r58c8) => r6c2,r79c1<>2
  36. Row 6 / Column 2 → 4 (Naked Single)
  37. Row 2 / Column 2 → 5 (Naked Single)
  38. Row 2 / Column 8 → 6 (Naked Single)
  39. Row 2 / Column 5 → 4 (Full House)
  40. Row 1 / Column 5 → 6 (Full House)
  41. Row 3 / Column 3 → 6 (Naked Single)
  42. Row 3 / Column 7 → 1 (Naked Single)
  43. Row 3 / Column 9 → 5 (Full House)
  44. Row 9 / Column 7 → 6 (Full House)
  45. Row 8 / Column 8 → 2 (Naked Single)
  46. Row 5 / Column 8 → 5 (Full House)
  47. Row 6 / Column 9 → 2 (Full House)
  48. Row 8 / Column 2 → 6 (Full House)
  49. Row 9 / Column 2 → 2 (Full House)
  50. Row 9 / Column 9 → 1 (Full House)
  51. Row 5 / Column 1 → 2 (Full House)
  52. Row 6 / Column 3 → 5 (Full House)
  53. Row 7 / Column 3 → 4 (Naked Single)
  54. Row 1 / Column 3 → 2 (Full House)
  55. Row 1 / Column 1 → 4 (Full House)
  56. Row 9 / Column 5 → 9 (Naked Single)
  57. Row 7 / Column 5 → 2 (Full House)
  58. Row 7 / Column 1 → 9 (Full House)
  59. Row 9 / Column 1 → 5 (Full House)
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