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

This Sudoku Puzzle has 67 steps and it is solved using Hidden Single, Naked Triple, Locked Candidates Type 1 (Pointing), undefined, Skyscraper, Locked Candidates Type 2 (Claiming), Turbot Fish, Naked Single, Uniqueness Test 1, Full House techniques.

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

Solution Steps:

  1. Row 6 / Column 8 → 3 (Hidden Single)
  2. Row 3 / Column 7 → 8 (Hidden Single)
  3. Row 4 / Column 2 → 8 (Hidden Single)
  4. Row 7 / Column 1 → 8 (Hidden Single)
  5. Row 3 / Column 5 → 5 (Hidden Single)
  6. Row 1 / Column 7 → 5 (Hidden Single)
  7. Row 8 / Column 5 → 8 (Hidden Single)
  8. Row 1 / Column 1 → 6 (Hidden Single)
  9. Row 3 / Column 3 → 3 (Hidden Single)
  10. Row 1 / Column 8 → 1 (Hidden Single)
  11. Row 2 / Column 6 → 6 (Hidden Single)
  12. Row 9 / Column 1 → 7 (Hidden Single)
  13. Row 9 / Column 3 → 1 (Hidden Single)
  14. Row 5 / Column 1 → 4 (Hidden Single)
  15. Row 9 / Column 6 → 5 (Hidden Single)
  16. Row 8 / Column 3 → 5 (Hidden Single)
  17. Row 5 / Column 7 → 1 (Hidden Single)
  18. Row 6 / Column 4 → 5 (Hidden Single)
  19. Row 4 / Column 4 → 1 (Hidden Single)
  20. Row 6 / Column 5 → 7 (Hidden Single)
  21. Naked Triple: 2,4,9 in r8c8,r9c79 => r7c79<>2, r7c79,r8c7<>9, r7c9<>4
  22. Locked Candidates Type 1 (Pointing): 2 in b9 => r9c5<>2
  23. 2-String Kite: 2 in r3c9,r5c3 (connected by r1c3,r3c2) => r5c9<>2
  24. Locked Candidates Type 1 (Pointing): 2 in b6 => r4c56<>2
  25. Skyscraper: 2 in r5c3,r6c6 (connected by r1c36) => r5c5,r6c2<>2
  26. Row 5 / Column 3 → 2 (Hidden Single)
  27. Row 6 / Column 6 → 2 (Hidden Single)
  28. Naked Triple: 4,6,9 in r459c5 => r17c5<>9, r7c5<>4
  29. Locked Candidates Type 2 (Claiming): 4 in r7 => r8c2<>4
  30. Turbot Fish: 9 r2c4 =9= r1c6 -9- r1c3 =9= r7c3 => r7c4<>9
  31. Locked Candidates Type 2 (Claiming): 9 in r7 => r8c2<>9
  32. Row 8 / Column 2 → 6 (Naked Single)
  33. Uniqueness Test 1: 4/9 in r1c23,r7c23 => r1c2<>4, r1c2<>9
  34. Uniqueness Test 1: 1/9 in r3c12,r6c12 => r3c2<>1, r3c2<>9
  35. Row 3 / Column 2 → 2 (Naked Single)
  36. Row 1 / Column 2 → 7 (Naked Single)
  37. Row 3 / Column 9 → 9 (Naked Single)
  38. Row 3 / Column 1 → 1 (Full House)
  39. Row 6 / Column 1 → 9 (Full House)
  40. Row 6 / Column 2 → 1 (Full House)
  41. Row 5 / Column 9 → 6 (Naked Single)
  42. Row 5 / Column 5 → 9 (Full House)
  43. Row 7 / Column 9 → 7 (Naked Single)
  44. Row 4 / Column 6 → 4 (Naked Single)
  45. Row 4 / Column 5 → 6 (Full House)
  46. Row 9 / Column 5 → 4 (Naked Single)
  47. Row 7 / Column 4 → 2 (Naked Single)
  48. Row 8 / Column 7 → 3 (Naked Single)
  49. Row 9 / Column 9 → 2 (Naked Single)
  50. Row 1 / Column 9 → 4 (Full House)
  51. Row 9 / Column 7 → 9 (Full House)
  52. Row 2 / Column 4 → 9 (Naked Single)
  53. Row 8 / Column 4 → 7 (Full House)
  54. Row 7 / Column 5 → 3 (Naked Single)
  55. Row 8 / Column 6 → 9 (Full House)
  56. Row 8 / Column 8 → 4 (Full House)
  57. Row 7 / Column 7 → 6 (Full House)
  58. Row 1 / Column 6 → 3 (Full House)
  59. Row 1 / Column 5 → 2 (Full House)
  60. Row 1 / Column 3 → 9 (Full House)
  61. Row 2 / Column 2 → 4 (Full House)
  62. Row 7 / Column 3 → 4 (Full House)
  63. Row 7 / Column 2 → 9 (Full House)
  64. Row 2 / Column 8 → 2 (Naked Single)
  65. Row 2 / Column 7 → 7 (Full House)
  66. Row 4 / Column 7 → 2 (Full House)
  67. Row 4 / Column 8 → 9 (Full House)
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