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

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.

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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