Solution for Evil Sudoku #1216734582939

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

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 7 → 9 (Hidden Single)
  2. Row 2 / Column 2 → 1 (Hidden Single)
  3. Row 1 / Column 4 → 1 (Hidden Single)
  4. Row 6 / Column 6 → 7 (Hidden Single)
  5. Row 7 / Column 5 → 1 (Hidden Single)
  6. Row 8 / Column 1 → 1 (Hidden Single)
  7. Row 4 / Column 7 → 7 (Hidden Single)
  8. Row 9 / Column 4 → 9 (Hidden Single)
  9. Row 1 / Column 8 → 7 (Hidden Single)
  10. Row 2 / Column 3 → 4 (Hidden Single)
  11. Row 6 / Column 8 → 3 (Hidden Single)
  12. Row 4 / Column 4 → 3 (Hidden Single)
  13. Row 3 / Column 5 → 2 (Hidden Single)
  14. Row 7 / Column 4 → 2 (Hidden Single)
  15. Row 9 / Column 6 → 8 (Hidden Single)
  16. Row 1 / Column 9 → 3 (Hidden Single)
  17. Row 2 / Column 4 → 8 (Hidden Single)
  18. Row 3 / Column 4 → 6 (Full House)
  19. Row 1 / Column 6 → 5 (Naked Single)
  20. Row 1 / Column 3 → 6 (Full House)
  21. Row 3 / Column 6 → 3 (Full House)
  22. Row 7 / Column 7 → 3 (Hidden Single)
  23. Row 5 / Column 2 → 3 (Hidden Single)
  24. Row 5 / Column 8 → 8 (Hidden Single)
  25. Locked Candidates Type 1 (Pointing): 9 in b6 => r7c9<>9
  26. Naked Triple: 5,6,8 in r4c2,r6c13 => r5c1<>6
  27. W-Wing: 8/5 in r3c2,r6c3 connected by 5 in r36c1 => r3c3,r4c2<>8
  28. Row 4 / Column 2 → 6 (Naked Single)
  29. Row 4 / Column 9 → 9 (Naked Single)
  30. Row 4 / Column 5 → 8 (Full House)
  31. Row 6 / Column 1 → 5 (Naked Single)
  32. Row 9 / Column 2 → 4 (Naked Single)
  33. Row 6 / Column 5 → 6 (Naked Single)
  34. Row 6 / Column 3 → 8 (Full House)
  35. Row 5 / Column 5 → 9 (Full House)
  36. Row 3 / Column 1 → 7 (Naked Single)
  37. Row 8 / Column 2 → 5 (Naked Single)
  38. Row 3 / Column 2 → 8 (Full House)
  39. Row 3 / Column 3 → 5 (Full House)
  40. Row 5 / Column 1 → 2 (Naked Single)
  41. Row 5 / Column 3 → 7 (Full House)
  42. Row 9 / Column 1 → 6 (Full House)
  43. Row 9 / Column 7 → 2 (Full House)
  44. Row 7 / Column 3 → 9 (Naked Single)
  45. Row 8 / Column 3 → 2 (Full House)
  46. Row 7 / Column 8 → 6 (Naked Single)
  47. Row 2 / Column 8 → 2 (Naked Single)
  48. Row 8 / Column 8 → 9 (Full House)
  49. Row 7 / Column 6 → 4 (Naked Single)
  50. Row 7 / Column 9 → 5 (Full House)
  51. Row 8 / Column 7 → 4 (Full House)
  52. Row 8 / Column 6 → 6 (Full House)
  53. Row 2 / Column 9 → 6 (Naked Single)
  54. Row 2 / Column 7 → 5 (Full House)
  55. Row 5 / Column 7 → 6 (Full House)
  56. Row 5 / Column 9 → 4 (Full House)
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