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

This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Skyscraper techniques.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 4 (Naked Single)
  2. Row 8 / Column 4 → 9 (Naked Single)
  3. Row 9 / Column 1 → 3 (Naked Single)
  4. Row 3 / Column 6 → 2 (Naked Single)
  5. Row 6 / Column 5 → 3 (Naked Single)
  6. Row 7 / Column 4 → 4 (Naked Single)
  7. Row 8 / Column 6 → 6 (Naked Single)
  8. Row 3 / Column 5 → 4 (Naked Single)
  9. Row 6 / Column 4 → 1 (Naked Single)
  10. Row 2 / Column 4 → 3 (Naked Single)
  11. Row 4 / Column 4 → 2 (Full House)
  12. Row 9 / Column 5 → 5 (Naked Single)
  13. Row 7 / Column 5 → 8 (Full House)
  14. Row 1 / Column 5 → 7 (Naked Single)
  15. Row 2 / Column 6 → 9 (Full House)
  16. Row 5 / Column 5 → 9 (Full House)
  17. Row 4 / Column 6 → 7 (Full House)
  18. Row 6 / Column 8 → 5 (Naked Single)
  19. Row 9 / Column 3 → 9 (Naked Single)
  20. Row 6 / Column 2 → 8 (Naked Single)
  21. Row 6 / Column 7 → 6 (Full House)
  22. Row 4 / Column 1 → 1 (Naked Single)
  23. Row 1 / Column 1 → 2 (Naked Single)
  24. Row 7 / Column 1 → 7 (Naked Single)
  25. Row 5 / Column 1 → 6 (Naked Single)
  26. Row 3 / Column 1 → 8 (Full House)
  27. Row 4 / Column 7 → 8 (Hidden Single)
  28. Row 8 / Column 3 → 8 (Hidden Single)
  29. Row 2 / Column 3 → 6 (Hidden Single)
  30. Row 3 / Column 9 → 6 (Hidden Single)
  31. Row 8 / Column 7 → 7 (Hidden Single)
  32. Row 4 / Column 9 → 9 (Hidden Single)
  33. Row 7 / Column 7 → 9 (Hidden Single)
  34. Row 2 / Column 2 → 7 (Hidden Single)
  35. Row 5 / Column 3 → 7 (Hidden Single)
  36. Row 1 / Column 7 → 5 (Hidden Single)
  37. Locked Candidates Type 1 (Pointing): 4 in b1 => r1c9<>4
  38. Naked Pair: 2,4 in r29c7 => r5c7<>2, r5c7<>4
  39. Naked Triple: 1,3,5 in r178c9 => r5c9<>1, r5c9<>3
  40. Skyscraper: 1 in r3c7,r7c9 (connected by r37c3) => r1c9<>1
  41. Row 1 / Column 9 → 3 (Naked Single)
  42. Row 3 / Column 7 → 1 (Naked Single)
  43. Row 3 / Column 3 → 3 (Full House)
  44. Row 5 / Column 7 → 3 (Naked Single)
  45. Row 4 / Column 8 → 4 (Naked Single)
  46. Row 5 / Column 2 → 4 (Naked Single)
  47. Row 2 / Column 8 → 2 (Naked Single)
  48. Row 2 / Column 7 → 4 (Full House)
  49. Row 9 / Column 7 → 2 (Full House)
  50. Row 9 / Column 9 → 4 (Full House)
  51. Row 4 / Column 3 → 5 (Naked Single)
  52. Row 4 / Column 2 → 3 (Full House)
  53. Row 5 / Column 9 → 2 (Naked Single)
  54. Row 5 / Column 8 → 1 (Full House)
  55. Row 8 / Column 8 → 3 (Full House)
  56. Row 1 / Column 2 → 1 (Naked Single)
  57. Row 1 / Column 3 → 4 (Full House)
  58. Row 7 / Column 3 → 1 (Full House)
  59. Row 8 / Column 2 → 5 (Full House)
  60. Row 7 / Column 9 → 5 (Full House)
  61. Row 8 / Column 9 → 1 (Full House)
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