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

This Sudoku Puzzle has 66 steps and it is solved using Hidden Pair, Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Hidden Pair: 3,6 in r2c36 => r2c36<>7, r2c36<>9, r2c6<>8
  2. Hidden Pair: 1,3 in r7c28 => r7c2<>4, r7c2<>5, r7c2<>9, r7c8<>6
  3. Row 6 / Column 8 → 6 (Hidden Single)
  4. Row 7 / Column 8 → 3 (Hidden Single)
  5. Row 7 / Column 2 → 1 (Naked Single)
  6. Row 3 / Column 2 → 3 (Hidden Single)
  7. Row 2 / Column 3 → 6 (Naked Single)
  8. Row 2 / Column 6 → 3 (Naked Single)
  9. Row 8 / Column 3 → 3 (Hidden Single)
  10. Row 4 / Column 2 → 6 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 9 in b7 => r2346c1<>9
  12. Locked Candidates Type 1 (Pointing): 9 in b1 => r1c4678<>9
  13. Row 1 / Column 8 → 8 (Naked Single)
  14. Row 2 / Column 9 → 7 (Naked Single)
  15. Row 9 / Column 8 → 1 (Naked Single)
  16. Row 1 / Column 7 → 4 (Naked Single)
  17. Row 2 / Column 1 → 8 (Naked Single)
  18. Row 1 / Column 2 → 9 (Naked Single)
  19. Row 3 / Column 9 → 2 (Naked Single)
  20. Row 1 / Column 3 → 7 (Naked Single)
  21. Row 3 / Column 1 → 4 (Full House)
  22. Row 3 / Column 8 → 9 (Naked Single)
  23. Row 2 / Column 7 → 1 (Full House)
  24. Row 5 / Column 8 → 2 (Full House)
  25. Row 2 / Column 5 → 9 (Full House)
  26. Row 9 / Column 7 → 7 (Hidden Single)
  27. Row 6 / Column 1 → 7 (Hidden Single)
  28. Locked Candidates Type 1 (Pointing): 4 in b7 => r9c6<>4
  29. Locked Candidates Type 1 (Pointing): 8 in b9 => r8c45<>8
  30. Row 8 / Column 5 → 5 (Naked Single)
  31. Row 8 / Column 7 → 8 (Naked Single)
  32. Row 8 / Column 9 → 6 (Naked Single)
  33. Row 7 / Column 9 → 5 (Full House)
  34. Row 6 / Column 9 → 4 (Naked Single)
  35. Row 4 / Column 9 → 8 (Full House)
  36. Row 7 / Column 1 → 9 (Naked Single)
  37. Row 6 / Column 5 → 1 (Naked Single)
  38. Row 8 / Column 1 → 2 (Naked Single)
  39. Row 4 / Column 1 → 5 (Full House)
  40. Row 8 / Column 4 → 9 (Full House)
  41. Row 4 / Column 5 → 4 (Naked Single)
  42. Row 9 / Column 3 → 4 (Naked Single)
  43. Row 9 / Column 2 → 5 (Full House)
  44. Row 5 / Column 2 → 4 (Full House)
  45. Row 7 / Column 5 → 7 (Naked Single)
  46. Row 3 / Column 5 → 8 (Full House)
  47. Row 5 / Column 3 → 9 (Naked Single)
  48. Row 7 / Column 4 → 6 (Naked Single)
  49. Row 7 / Column 6 → 4 (Full House)
  50. Row 3 / Column 6 → 7 (Naked Single)
  51. Row 3 / Column 4 → 1 (Full House)
  52. Row 5 / Column 7 → 5 (Naked Single)
  53. Row 6 / Column 3 → 2 (Naked Single)
  54. Row 4 / Column 3 → 1 (Full House)
  55. Row 1 / Column 4 → 5 (Naked Single)
  56. Row 1 / Column 6 → 6 (Full House)
  57. Row 5 / Column 6 → 8 (Naked Single)
  58. Row 5 / Column 4 → 7 (Full House)
  59. Row 6 / Column 4 → 3 (Naked Single)
  60. Row 9 / Column 6 → 2 (Naked Single)
  61. Row 9 / Column 4 → 8 (Full House)
  62. Row 4 / Column 4 → 2 (Full House)
  63. Row 6 / Column 7 → 9 (Naked Single)
  64. Row 4 / Column 7 → 3 (Full House)
  65. Row 4 / Column 6 → 9 (Full House)
  66. Row 6 / Column 6 → 5 (Full House)
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