Solution for Hard Sudoku #322713524895

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

This Sudoku Puzzle has 52 steps and it is solved using Hidden Single, Naked Single, Full House techniques.

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Solution Steps:

  1. Row 2 / Column 1 → 8 (Hidden Single)
  2. Row 3 / Column 5 → 7 (Hidden Single)
  3. Row 5 / Column 3 → 2 (Hidden Single)
  4. Row 1 / Column 9 → 9 (Hidden Single)
  5. Row 1 / Column 3 → 6 (Naked Single)
  6. Row 1 / Column 5 → 8 (Naked Single)
  7. Row 1 / Column 8 → 5 (Full House)
  8. Row 1 / Column 4 → 5 (Full House)
  9. Row 2 / Column 3 → 3 (Naked Single)
  10. Row 3 / Column 3 → 9 (Naked Single)
  11. Row 3 / Column 1 → 5 (Full House)
  12. Row 3 / Column 2 → 5 (Full House)
  13. Row 2 / Column 6 → 6 (Naked Single)
  14. Row 3 / Column 6 → 6 (Naked Single)
  15. Row 2 / Column 4 → 4 (Naked Single)
  16. Row 2 / Column 7 → 1 (Full House)
  17. Row 2 / Column 9 → 1 (Full House)
  18. Row 3 / Column 8 → 4 (Naked Single)
  19. Row 4 / Column 7 → 2 (Hidden Single)
  20. Row 8 / Column 9 → 8 (Hidden Single)
  21. Row 8 / Column 4 → 6 (Naked Single)
  22. Row 7 / Column 5 → 4 (Full House)
  23. Row 9 / Column 5 → 4 (Full House)
  24. Row 7 / Column 4 → 9 (Naked Single)
  25. Row 9 / Column 7 → 6 (Naked Single)
  26. Row 5 / Column 4 → 8 (Naked Single)
  27. Row 5 / Column 6 → 9 (Full House)
  28. Row 7 / Column 9 → 5 (Naked Single)
  29. Row 9 / Column 2 → 9 (Naked Single)
  30. Row 4 / Column 9 → 6 (Naked Single)
  31. Row 7 / Column 7 → 3 (Naked Single)
  32. Row 5 / Column 7 → 4 (Full House)
  33. Row 8 / Column 7 → 4 (Full House)
  34. Row 9 / Column 1 → 1 (Naked Single)
  35. Row 4 / Column 1 → 9 (Naked Single)
  36. Row 4 / Column 2 → 8 (Full House)
  37. Row 4 / Column 8 → 8 (Full House)
  38. Row 7 / Column 2 → 6 (Naked Single)
  39. Row 7 / Column 8 → 1 (Full House)
  40. Row 5 / Column 9 → 7 (Naked Single)
  41. Row 6 / Column 9 → 7 (Naked Single)
  42. Row 8 / Column 3 → 7 (Naked Single)
  43. Row 6 / Column 3 → 4 (Full House)
  44. Row 8 / Column 1 → 3 (Full House)
  45. Row 5 / Column 1 → 6 (Full House)
  46. Row 5 / Column 2 → 3 (Full House)
  47. Row 5 / Column 8 → 3 (Full House)
  48. Row 6 / Column 1 → 6 (Full House)
  49. Row 9 / Column 6 → 8 (Naked Single)
  50. Row 6 / Column 8 → 3 (Naked Single)
  51. Row 6 / Column 2 → 3 (Naked Single)
  52. Row 8 / Column 6 → 5 (Hidden Single)
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