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

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

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

Solution Steps:

  1. Row 2 / Column 8 → 4 (Hidden Single)
  2. Row 3 / Column 3 → 4 (Hidden Single)
  3. Row 8 / Column 4 → 6 (Hidden Single)
  4. Row 4 / Column 4 → 4 (Hidden Single)
  5. Row 2 / Column 6 → 3 (Hidden Single)
  6. Row 3 / Column 9 → 9 (Hidden Single)
  7. Row 8 / Column 5 → 4 (Hidden Single)
  8. Row 5 / Column 5 → 3 (Hidden Single)
  9. Row 2 / Column 4 → 9 (Hidden Single)
  10. Row 3 / Column 4 → 5 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 9 in b5 => r78c6<>9
  12. Row 8 / Column 6 → 2 (Naked Single)
  13. Row 8 / Column 2 → 5 (Naked Single)
  14. Row 6 / Column 4 → 2 (Hidden Single)
  15. Row 5 / Column 1 → 5 (Hidden Single)
  16. Row 4 / Column 2 → 2 (Hidden Single)
  17. Row 1 / Column 1 → 6 (Hidden Single)
  18. Row 1 / Column 3 → 8 (Hidden Single)
  19. Row 1 / Column 5 → 2 (Hidden Single)
  20. Row 3 / Column 1 → 2 (Hidden Single)
  21. Row 2 / Column 1 → 7 (Hidden Single)
  22. Row 2 / Column 2 → 1 (Full House)
  23. Locked Candidates Type 1 (Pointing): 8 in b7 => r4c1<>8
  24. Row 4 / Column 6 → 8 (Hidden Single)
  25. Row 9 / Column 4 → 8 (Hidden Single)
  26. Row 7 / Column 1 → 8 (Hidden Single)
  27. Row 5 / Column 6 → 9 (Hidden Single)
  28. Remote Pair: 7/1 r3c7 -1- r3c5 -7- r1c4 -1- r5c4 -7- r6c6 -1- r7c6 => r5c7<>1, r7c7<>7
  29. Row 7 / Column 7 → 6 (Naked Single)
  30. Row 5 / Column 7 → 4 (Naked Single)
  31. Row 5 / Column 9 → 8 (Naked Single)
  32. Row 5 / Column 2 → 7 (Naked Single)
  33. Row 6 / Column 2 → 8 (Full House)
  34. Row 6 / Column 9 → 3 (Naked Single)
  35. Row 5 / Column 4 → 1 (Naked Single)
  36. Row 1 / Column 4 → 7 (Full House)
  37. Row 5 / Column 3 → 6 (Full House)
  38. Row 6 / Column 6 → 7 (Full House)
  39. Row 3 / Column 5 → 1 (Full House)
  40. Row 7 / Column 6 → 1 (Full House)
  41. Row 3 / Column 7 → 7 (Full House)
  42. Row 1 / Column 9 → 5 (Naked Single)
  43. Row 4 / Column 8 → 1 (Naked Single)
  44. Row 6 / Column 8 → 6 (Full House)
  45. Row 6 / Column 3 → 1 (Full House)
  46. Row 9 / Column 7 → 3 (Naked Single)
  47. Row 1 / Column 7 → 1 (Full House)
  48. Row 1 / Column 8 → 3 (Full House)
  49. Row 7 / Column 9 → 2 (Naked Single)
  50. Row 9 / Column 9 → 4 (Full House)
  51. Row 8 / Column 8 → 9 (Naked Single)
  52. Row 8 / Column 1 → 3 (Full House)
  53. Row 7 / Column 3 → 9 (Naked Single)
  54. Row 9 / Column 8 → 7 (Naked Single)
  55. Row 7 / Column 8 → 5 (Full House)
  56. Row 7 / Column 5 → 7 (Full House)
  57. Row 9 / Column 5 → 9 (Full House)
  58. Row 4 / Column 1 → 9 (Naked Single)
  59. Row 4 / Column 3 → 3 (Full House)
  60. Row 9 / Column 1 → 1 (Full House)
  61. Row 9 / Column 3 → 2 (Full House)
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