Solution for Hard Sudoku #118713524895

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

This Sudoku Puzzle has 55 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming) techniques.

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

Solution Steps:

  1. Row 6 / Column 9 → 8 (Hidden Single)
  2. Row 1 / Column 9 → 9 (Hidden Single)
  3. Row 5 / Column 7 → 7 (Hidden Single)
  4. Row 5 / Column 3 → 2 (Hidden Single)
  5. Row 5 / Column 9 → 6 (Naked Single)
  6. Row 5 / Column 1 → 4 (Full House)
  7. Row 7 / Column 9 → 2 (Naked Single)
  8. Row 2 / Column 9 → 5 (Full House)
  9. Row 2 / Column 7 → 4 (Hidden Single)
  10. Row 6 / Column 8 → 4 (Hidden Single)
  11. Row 4 / Column 7 → 2 (Hidden Single)
  12. Row 4 / Column 8 → 5 (Full House)
  13. Row 3 / Column 8 → 2 (Hidden Single)
  14. Row 1 / Column 8 → 1 (Hidden Single)
  15. Locked Candidates Type 1 (Pointing): 6 in b5 => r123789c5<>6
  16. Locked Candidates Type 1 (Pointing): 9 in b5 => r789c5<>9
  17. Row 7 / Column 7 → 9 (Hidden Single)
  18. Locked Candidates Type 2 (Claiming): 1 in c3 => r3c12<>1
  19. Row 3 / Column 1 → 6 (Naked Single)
  20. Row 3 / Column 6 → 5 (Naked Single)
  21. Row 8 / Column 1 → 9 (Naked Single)
  22. Row 4 / Column 1 → 1 (Full House)
  23. Row 9 / Column 1 → 1 (Full House)
  24. Row 4 / Column 2 → 6 (Naked Single)
  25. Row 4 / Column 5 → 9 (Full House)
  26. Row 6 / Column 5 → 6 (Full House)
  27. Row 6 / Column 2 → 5 (Naked Single)
  28. Row 6 / Column 3 → 9 (Full House)
  29. Row 1 / Column 2 → 4 (Naked Single)
  30. Row 1 / Column 3 → 5 (Naked Single)
  31. Row 3 / Column 2 → 3 (Naked Single)
  32. Row 2 / Column 3 → 1 (Full House)
  33. Row 3 / Column 3 → 1 (Full House)
  34. Row 7 / Column 2 → 7 (Full House)
  35. Row 9 / Column 2 → 7 (Full House)
  36. Row 3 / Column 5 → 4 (Naked Single)
  37. Row 7 / Column 5 → 3 (Naked Single)
  38. Row 2 / Column 5 → 2 (Naked Single)
  39. Row 7 / Column 8 → 6 (Naked Single)
  40. Row 7 / Column 4 → 4 (Full House)
  41. Row 8 / Column 7 → 5 (Full House)
  42. Row 9 / Column 7 → 5 (Full House)
  43. Row 9 / Column 8 → 3 (Full House)
  44. Row 8 / Column 5 → 8 (Naked Single)
  45. Row 9 / Column 5 → 2 (Naked Single)
  46. Row 2 / Column 6 → 6 (Naked Single)
  47. Row 2 / Column 4 → 3 (Full House)
  48. Row 8 / Column 4 → 6 (Naked Single)
  49. Row 9 / Column 4 → 6 (Naked Single)
  50. Row 1 / Column 5 → 7 (Naked Single)
  51. Row 8 / Column 6 → 6 (Naked Single)
  52. Row 1 / Column 4 → 7 (Naked Single)
  53. Row 1 / Column 6 → 8 (Naked Single)
  54. Row 9 / Column 6 → 9 (Naked Single)
  55. Row 8 / Column 3 → 4 (Hidden Single)
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