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

This Sudoku Puzzle has 52 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Pair, Hidden Triple, Hidden Single, Naked Single, Full House techniques.

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

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 6 in b4 => r23c2<>6
  2. Hidden Pair: 2,6 in r23c3 => r23c3<>1, r2c3<>7, r3c3<>3, r3c3<>5, r3c3<>8
  3. Hidden Triple: 2,5,9 in r479c7 => r4c7<>6, r47c7<>8, r79c7<>1, r79c7<>7
  4. Row 4 / Column 8 → 8 (Hidden Single)
  5. Row 4 / Column 2 → 6 (Hidden Single)
  6. Row 5 / Column 2 → 7 (Naked Single)
  7. Row 5 / Column 9 → 6 (Full House)
  8. Row 2 / Column 2 → 1 (Naked Single)
  9. Row 2 / Column 5 → 2 (Naked Single)
  10. Row 2 / Column 3 → 6 (Naked Single)
  11. Row 2 / Column 7 → 7 (Full House)
  12. Row 6 / Column 5 → 3 (Naked Single)
  13. Row 3 / Column 3 → 2 (Naked Single)
  14. Row 4 / Column 5 → 4 (Naked Single)
  15. Row 4 / Column 6 → 2 (Full House)
  16. Row 9 / Column 5 → 1 (Full House)
  17. Row 6 / Column 2 → 5 (Naked Single)
  18. Row 4 / Column 7 → 5 (Naked Single)
  19. Row 4 / Column 1 → 3 (Full House)
  20. Row 6 / Column 3 → 1 (Full House)
  21. Row 6 / Column 9 → 7 (Naked Single)
  22. Row 6 / Column 8 → 2 (Full House)
  23. Row 3 / Column 6 → 1 (Hidden Single)
  24. Row 7 / Column 4 → 2 (Hidden Single)
  25. Row 7 / Column 7 → 9 (Naked Single)
  26. Row 9 / Column 7 → 2 (Naked Single)
  27. Row 7 / Column 8 → 1 (Hidden Single)
  28. Row 1 / Column 7 → 1 (Hidden Single)
  29. Row 3 / Column 1 → 9 (Hidden Single)
  30. Row 9 / Column 2 → 9 (Hidden Single)
  31. Row 3 / Column 4 → 5 (Hidden Single)
  32. Row 1 / Column 4 → 4 (Full House)
  33. Row 1 / Column 8 → 3 (Naked Single)
  34. Row 1 / Column 2 → 8 (Naked Single)
  35. Row 3 / Column 9 → 8 (Naked Single)
  36. Row 9 / Column 8 → 7 (Naked Single)
  37. Row 3 / Column 2 → 3 (Naked Single)
  38. Row 7 / Column 2 → 4 (Full House)
  39. Row 3 / Column 7 → 6 (Naked Single)
  40. Row 3 / Column 8 → 4 (Full House)
  41. Row 8 / Column 8 → 6 (Full House)
  42. Row 8 / Column 7 → 8 (Full House)
  43. Row 8 / Column 3 → 7 (Full House)
  44. Row 9 / Column 6 → 4 (Naked Single)
  45. Row 7 / Column 6 → 7 (Full House)
  46. Row 1 / Column 3 → 5 (Naked Single)
  47. Row 1 / Column 1 → 7 (Full House)
  48. Row 7 / Column 1 → 5 (Full House)
  49. Row 9 / Column 3 → 3 (Naked Single)
  50. Row 7 / Column 3 → 8 (Full House)
  51. Row 7 / Column 9 → 3 (Full House)
  52. Row 9 / Column 9 → 5 (Full House)
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