Solution for Evil Sudoku #2258621374939

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

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

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

Solution Steps:

  1. Row 3 / Column 3 → 9 (Hidden Single)
  2. Row 2 / Column 8 → 5 (Hidden Single)
  3. Row 1 / Column 6 → 5 (Hidden Single)
  4. Row 6 / Column 4 → 6 (Hidden Single)
  5. Row 4 / Column 3 → 6 (Hidden Single)
  6. Row 7 / Column 5 → 5 (Hidden Single)
  7. Row 8 / Column 9 → 5 (Hidden Single)
  8. Row 9 / Column 6 → 9 (Hidden Single)
  9. Row 1 / Column 2 → 6 (Hidden Single)
  10. Row 2 / Column 7 → 1 (Hidden Single)
  11. Row 6 / Column 2 → 2 (Hidden Single)
  12. Row 4 / Column 6 → 2 (Hidden Single)
  13. Row 3 / Column 5 → 4 (Hidden Single)
  14. Row 7 / Column 6 → 4 (Hidden Single)
  15. Row 9 / Column 4 → 7 (Hidden Single)
  16. Row 1 / Column 1 → 2 (Hidden Single)
  17. Row 2 / Column 6 → 7 (Hidden Single)
  18. Row 3 / Column 6 → 8 (Full House)
  19. Row 1 / Column 4 → 3 (Naked Single)
  20. Row 1 / Column 7 → 8 (Full House)
  21. Row 3 / Column 4 → 2 (Full House)
  22. Row 5 / Column 8 → 2 (Hidden Single)
  23. Row 7 / Column 3 → 2 (Hidden Single)
  24. Row 5 / Column 2 → 7 (Hidden Single)
  25. Locked Candidates Type 1 (Pointing): 9 in b4 => r7c1<>9
  26. Naked Triple: 3,7,8 in r4c8,r6c79 => r5c9<>8
  27. W-Wing: 7/3 in r3c8,r6c7 connected by 3 in r36c9 => r3c7,r4c8<>7
  28. Row 4 / Column 8 → 8 (Naked Single)
  29. Row 4 / Column 1 → 9 (Naked Single)
  30. Row 4 / Column 5 → 7 (Full House)
  31. Row 6 / Column 9 → 3 (Naked Single)
  32. Row 9 / Column 8 → 1 (Naked Single)
  33. Row 6 / Column 5 → 8 (Naked Single)
  34. Row 6 / Column 7 → 7 (Full House)
  35. Row 5 / Column 5 → 9 (Full House)
  36. Row 3 / Column 9 → 6 (Naked Single)
  37. Row 8 / Column 8 → 3 (Naked Single)
  38. Row 3 / Column 8 → 7 (Full House)
  39. Row 3 / Column 7 → 3 (Full House)
  40. Row 5 / Column 9 → 4 (Naked Single)
  41. Row 5 / Column 7 → 6 (Full House)
  42. Row 9 / Column 9 → 8 (Full House)
  43. Row 9 / Column 3 → 4 (Full House)
  44. Row 7 / Column 7 → 9 (Naked Single)
  45. Row 8 / Column 7 → 4 (Full House)
  46. Row 7 / Column 2 → 8 (Naked Single)
  47. Row 2 / Column 2 → 4 (Naked Single)
  48. Row 8 / Column 2 → 9 (Full House)
  49. Row 7 / Column 4 → 1 (Naked Single)
  50. Row 7 / Column 1 → 3 (Full House)
  51. Row 8 / Column 3 → 1 (Full House)
  52. Row 8 / Column 4 → 8 (Full House)
  53. Row 2 / Column 1 → 8 (Naked Single)
  54. Row 2 / Column 3 → 3 (Full House)
  55. Row 5 / Column 3 → 8 (Full House)
  56. Row 5 / Column 1 → 1 (Full House)
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