Solution for Evil Sudoku #1112398657439

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

This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, undefined, Naked Single techniques.

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

Solution Steps:

  1. Row 5 / Column 7 → 1 (Hidden Single)
  2. Row 4 / Column 6 → 3 (Hidden Single)
  3. Row 3 / Column 3 → 4 (Hidden Single)
  4. Row 6 / Column 1 → 1 (Hidden Single)
  5. Row 8 / Column 2 → 1 (Hidden Single)
  6. Row 3 / Column 4 → 3 (Hidden Single)
  7. Row 9 / Column 8 → 1 (Hidden Single)
  8. Row 5 / Column 3 → 7 (Hidden Single)
  9. Row 2 / Column 6 → 9 (Hidden Single)
  10. Row 6 / Column 4 → 9 (Hidden Single)
  11. Row 6 / Column 9 → 4 (Hidden Single)
  12. Row 2 / Column 1 → 3 (Hidden Single)
  13. Row 7 / Column 2 → 8 (Hidden Single)
  14. Row 1 / Column 1 → 9 (Hidden Single)
  15. Row 3 / Column 7 → 9 (Hidden Single)
  16. Row 8 / Column 5 → 9 (Hidden Single)
  17. Row 2 / Column 5 → 5 (Hidden Single)
  18. Row 4 / Column 3 → 9 (Hidden Single)
  19. Row 4 / Column 9 → 5 (Hidden Single)
  20. Row 6 / Column 7 → 7 (Hidden Single)
  21. Row 6 / Column 2 → 5 (Hidden Single)
  22. Row 6 / Column 3 → 2 (Full House)
  23. Row 4 / Column 1 → 6 (Full House)
  24. Row 7 / Column 1 → 2 (Full House)
  25. Locked Candidates Type 1 (Pointing): 4 in b2 => r1c7<>4
  26. Naked Triple: 2,5,6 in r79c6,r8c4 => r9c5<>2
  27. W-Wing: 5/6 in r7c6,r8c3 connected by 6 in r9c36 => r7c3,r8c4<>5
  28. Row 8 / Column 4 → 2 (Naked Single)
  29. Row 1 / Column 4 → 4 (Naked Single)
  30. Row 5 / Column 4 → 5 (Full House)
  31. Row 8 / Column 9 → 8 (Naked Single)
  32. Row 9 / Column 6 → 6 (Naked Single)
  33. Row 5 / Column 6 → 2 (Naked Single)
  34. Row 7 / Column 6 → 5 (Full House)
  35. Row 5 / Column 5 → 4 (Full House)
  36. Row 8 / Column 8 → 6 (Naked Single)
  37. Row 8 / Column 3 → 5 (Full House)
  38. Row 9 / Column 3 → 3 (Naked Single)
  39. Row 7 / Column 3 → 6 (Full House)
  40. Row 7 / Column 7 → 4 (Naked Single)
  41. Row 9 / Column 5 → 7 (Naked Single)
  42. Row 7 / Column 5 → 3 (Full House)
  43. Row 7 / Column 8 → 7 (Full House)
  44. Row 9 / Column 9 → 2 (Full House)
  45. Row 3 / Column 9 → 7 (Full House)
  46. Row 2 / Column 7 → 2 (Naked Single)
  47. Row 2 / Column 2 → 7 (Naked Single)
  48. Row 2 / Column 8 → 4 (Full House)
  49. Row 3 / Column 8 → 8 (Naked Single)
  50. Row 1 / Column 7 → 6 (Full House)
  51. Row 4 / Column 7 → 8 (Full House)
  52. Row 4 / Column 8 → 2 (Full House)
  53. Row 3 / Column 5 → 2 (Naked Single)
  54. Row 1 / Column 5 → 8 (Full House)
  55. Row 1 / Column 2 → 2 (Full House)
  56. Row 3 / Column 2 → 6 (Full House)
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