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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Skyscraper techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 6 (Hidden Single)
  2. Row 5 / Column 7 → 7 (Hidden Single)
  3. Row 9 / Column 4 → 7 (Hidden Single)
  4. Row 2 / Column 2 → 6 (Hidden Single)
  5. Row 5 / Column 9 → 6 (Hidden Single)
  6. Row 3 / Column 7 → 6 (Hidden Single)
  7. Row 7 / Column 3 → 6 (Hidden Single)
  8. Row 2 / Column 6 → 7 (Hidden Single)
  9. Row 5 / Column 5 → 3 (Hidden Single)
  10. Row 6 / Column 4 → 2 (Naked Single)
  11. Row 4 / Column 4 → 1 (Naked Single)
  12. Row 4 / Column 6 → 9 (Naked Single)
  13. Row 6 / Column 5 → 5 (Full House)
  14. Row 7 / Column 2 → 7 (Hidden Single)
  15. Row 1 / Column 3 → 7 (Hidden Single)
  16. Row 4 / Column 9 → 2 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 5 in b6 => r4c2<>5
  18. Locked Candidates Type 1 (Pointing): 3 in b8 => r8c278<>3
  19. Locked Candidates Type 1 (Pointing): 3 in b7 => r123c1<>3
  20. Locked Candidates Type 1 (Pointing): 8 in b8 => r13c5<>8
  21. Locked Candidates Type 2 (Claiming): 8 in c8 => r4c7,r6c9<>8
  22. Naked Triple: 1,4,8 in r279c5 => r13c5<>1, r3c5<>4
  23. Locked Candidates Type 1 (Pointing): 4 in b2 => r2c1<>4
  24. Skyscraper: 1 in r7c5,r8c8 (connected by r2c58) => r7c9,r8c6<>1
  25. Row 8 / Column 6 → 3 (Naked Single)
  26. Row 8 / Column 4 → 4 (Naked Single)
  27. Row 2 / Column 4 → 3 (Full House)
  28. Row 9 / Column 5 → 8 (Naked Single)
  29. Row 7 / Column 5 → 1 (Full House)
  30. Row 2 / Column 5 → 4 (Naked Single)
  31. Row 8 / Column 8 → 1 (Hidden Single)
  32. Row 2 / Column 8 → 5 (Naked Single)
  33. Row 2 / Column 1 → 1 (Full House)
  34. Row 4 / Column 8 → 8 (Naked Single)
  35. Row 6 / Column 8 → 3 (Full House)
  36. Row 4 / Column 2 → 4 (Naked Single)
  37. Row 4 / Column 7 → 5 (Full House)
  38. Row 6 / Column 9 → 4 (Full House)
  39. Row 6 / Column 3 → 9 (Naked Single)
  40. Row 6 / Column 2 → 8 (Full House)
  41. Row 8 / Column 7 → 9 (Naked Single)
  42. Row 9 / Column 9 → 5 (Hidden Single)
  43. Row 9 / Column 3 → 4 (Naked Single)
  44. Row 3 / Column 3 → 2 (Naked Single)
  45. Row 7 / Column 1 → 3 (Naked Single)
  46. Row 9 / Column 7 → 3 (Naked Single)
  47. Row 9 / Column 1 → 9 (Full House)
  48. Row 3 / Column 5 → 9 (Naked Single)
  49. Row 1 / Column 5 → 2 (Full House)
  50. Row 8 / Column 3 → 5 (Naked Single)
  51. Row 5 / Column 3 → 1 (Full House)
  52. Row 8 / Column 2 → 2 (Full House)
  53. Row 7 / Column 9 → 8 (Naked Single)
  54. Row 7 / Column 7 → 4 (Full House)
  55. Row 1 / Column 7 → 8 (Full House)
  56. Row 1 / Column 1 → 5 (Naked Single)
  57. Row 3 / Column 1 → 4 (Naked Single)
  58. Row 5 / Column 1 → 2 (Full House)
  59. Row 5 / Column 2 → 5 (Full House)
  60. Row 3 / Column 2 → 3 (Naked Single)
  61. Row 1 / Column 2 → 9 (Full House)
  62. Row 1 / Column 6 → 1 (Naked Single)
  63. Row 1 / Column 9 → 3 (Full House)
  64. Row 3 / Column 9 → 1 (Full House)
  65. Row 3 / Column 6 → 8 (Full House)
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