Solution for Evil Sudoku #2228597316493

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

This Sudoku Puzzle has 60 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Pair techniques.

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

Solution Steps:

  1. Row 6 / Column 4 → 6 (Naked Single)
  2. Row 4 / Column 4 → 2 (Naked Single)
  3. Row 6 / Column 5 → 1 (Naked Single)
  4. Row 4 / Column 6 → 9 (Full House)
  5. Row 2 / Column 8 → 3 (Hidden Single)
  6. Row 3 / Column 5 → 9 (Hidden Single)
  7. Row 6 / Column 1 → 3 (Hidden Single)
  8. Row 9 / Column 1 → 9 (Hidden Single)
  9. Row 8 / Column 8 → 9 (Hidden Single)
  10. Row 2 / Column 7 → 5 (Hidden Single)
  11. Row 1 / Column 8 → 6 (Hidden Single)
  12. Row 5 / Column 2 → 9 (Hidden Single)
  13. Row 4 / Column 2 → 8 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 8 in b3 => r3c4<>8
  15. Locked Candidates Type 1 (Pointing): 5 in b6 => r7c8<>5
  16. Locked Pair: 1,4 in r7c78 => r7c129,r9c7<>1, r7c1259,r8c9,r9c7<>4
  17. Row 9 / Column 7 → 8 (Naked Single)
  18. Row 5 / Column 7 → 1 (Naked Single)
  19. Row 9 / Column 4 → 4 (Naked Single)
  20. Row 4 / Column 9 → 4 (Naked Single)
  21. Row 5 / Column 1 → 2 (Naked Single)
  22. Row 7 / Column 7 → 4 (Naked Single)
  23. Row 3 / Column 4 → 7 (Naked Single)
  24. Row 2 / Column 4 → 8 (Full House)
  25. Row 9 / Column 5 → 6 (Naked Single)
  26. Row 1 / Column 9 → 1 (Naked Single)
  27. Row 4 / Column 8 → 7 (Naked Single)
  28. Row 5 / Column 3 → 5 (Naked Single)
  29. Row 5 / Column 8 → 8 (Full House)
  30. Row 6 / Column 8 → 5 (Full House)
  31. Row 7 / Column 8 → 1 (Naked Single)
  32. Row 3 / Column 8 → 4 (Full House)
  33. Row 3 / Column 7 → 2 (Naked Single)
  34. Row 1 / Column 7 → 7 (Full House)
  35. Row 3 / Column 9 → 8 (Full House)
  36. Row 3 / Column 6 → 1 (Full House)
  37. Row 7 / Column 5 → 2 (Naked Single)
  38. Row 9 / Column 6 → 5 (Naked Single)
  39. Row 9 / Column 3 → 1 (Full House)
  40. Row 1 / Column 6 → 2 (Naked Single)
  41. Row 1 / Column 2 → 4 (Full House)
  42. Row 2 / Column 5 → 4 (Naked Single)
  43. Row 8 / Column 5 → 8 (Full House)
  44. Row 2 / Column 6 → 6 (Full House)
  45. Row 4 / Column 3 → 6 (Naked Single)
  46. Row 4 / Column 1 → 1 (Full House)
  47. Row 6 / Column 2 → 7 (Naked Single)
  48. Row 6 / Column 3 → 4 (Full House)
  49. Row 2 / Column 1 → 7 (Naked Single)
  50. Row 7 / Column 2 → 5 (Naked Single)
  51. Row 2 / Column 3 → 2 (Naked Single)
  52. Row 2 / Column 2 → 1 (Full House)
  53. Row 8 / Column 2 → 2 (Full House)
  54. Row 8 / Column 3 → 7 (Full House)
  55. Row 7 / Column 1 → 6 (Naked Single)
  56. Row 8 / Column 1 → 4 (Full House)
  57. Row 7 / Column 9 → 3 (Naked Single)
  58. Row 7 / Column 6 → 7 (Full House)
  59. Row 8 / Column 6 → 3 (Full House)
  60. Row 8 / Column 9 → 5 (Full House)
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