Solution for Evil Sudoku #4328715643943

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

This Sudoku Puzzle has steps and it is solved using techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 7 / Column 6 → 4 (Naked Single)
  2. Row 8 / Column 6 → 5 (Naked Single)
  3. Row 2 / Column 8 → 5 (Hidden Single)
  4. Row 4 / Column 9 → 1 (Hidden Single)
  5. Row 5 / Column 8 → 4 (Hidden Single)
  6. Row 5 / Column 3 → 5 (Hidden Single)
  7. Row 4 / Column 3 → 2 (Naked Single)
  8. Row 4 / Column 4 → 8 (Naked Single)
  9. Row 4 / Column 5 → 5 (Full House)
  10. Row 5 / Column 4 → 9 (Hidden Single)
  11. Row 8 / Column 4 → 6 (Naked Single)
  12. Row 2 / Column 4 → 7 (Naked Single)
  13. Row 3 / Column 4 → 2 (Full House)
  14. Row 6 / Column 1 → 1 (Hidden Single)
  15. Row 3 / Column 7 → 1 (Hidden Single)
  16. Row 1 / Column 2 → 1 (Hidden Single)
  17. Row 1 / Column 3 → 4 (Hidden Single)
  18. Row 2 / Column 6 → 1 (Hidden Single)
  19. Row 6 / Column 5 → 7 (Hidden Single)
  20. Row 9 / Column 2 → 4 (Hidden Single)
  21. Row 9 / Column 7 → 5 (Hidden Single)
  22. Row 8 / Column 2 → 2 (Hidden Single)
  23. Row 7 / Column 7 → 6 (Hidden Single)
  24. Locked Candidates Type 1 (Pointing): 7 in b3 => r1c1<>7
  25. X-Wing: 8 r2r7 c3c9 => r9c3<>8,r1c9<>8,r5c9<>8,r9c9<>8
  26. Row 5 / Column 7 → 8 (Hidden Single)
  27. X-Wing: 9 r2r7 c2c9 => r9c9<>9
  28. Naked Pair: 2,3 in r5c9,r9c9 => r1c9<>2,r1c9<>3,r2c9<>3
  29. Row 1 / Column 9 → 7 (Naked Single)
  30. Row 8 / Column 7 → 7 (Hidden Single)
  31. XYZ-Wing: 3/8/9 in r8c8,r3c8,r7c9 => r9c8<>9
  32. Uniqueness Test 2: 2/3 in r1c7,r1c8,r9c7,r9c8 => r8c8<>8
  33. Naked Pair: 3,9 in r3c8,r8c8 => r1c8<>3,r9c8<>3
  34. Turbot Fish: 3 in r8c1,r8c8,r3c8,r1c7 => r1c1<>3
  35. Empty Rectangle: 3 in b7 => r3c1<>3
  36. Locked Candidates Type 1 (Pointing): 3 in b1 => r9c3<>3
  37. Row 9 / Column 3 → 3 (Naked Single)
  38. Row 1 / Column 1 → 8 (Brute Force)
  39. Row 1 / Column 5 → 6 (Brute Force)
  40. Row 1 / Column 7 → 3 (Brute Force)
  41. Row 1 / Column 8 → 2 (Brute Force)
  42. Row 2 / Column 2 → 9 (Brute Force)
  43. Row 2 / Column 3 → 6 (Brute Force)
  44. Row 2 / Column 5 → 3 (Brute Force)
  45. Row 2 / Column 9 → 8 (Brute Force)
  46. Row 3 / Column 1 → 3 (Brute Force)
  47. Row 3 / Column 3 → 7 (Brute Force)
  48. Row 3 / Column 8 → 9 (Brute Force)
  49. Row 5 / Column 1 → 7 (Brute Force)
  50. Row 5 / Column 2 → 6 (Brute Force)
  51. Row 5 / Column 6 → 2 (Brute Force)
  52. Row 5 / Column 9 → 3 (Brute Force)
  53. Row 6 / Column 6 → 3 (Brute Force)
  54. Row 6 / Column 7 → 2 (Brute Force)
  55. Row 7 / Column 2 → 7 (Brute Force)
  56. Row 7 / Column 3 → 8 (Brute Force)
  57. Row 7 / Column 9 → 9 (Brute Force)
  58. Row 8 / Column 1 → 9 (Brute Force)
  59. Row 8 / Column 5 → 8 (Brute Force)
  60. Row 8 / Column 8 → 3 (Brute Force)
  61. Row 9 / Column 1 → 6 (Brute Force)
  62. Row 9 / Column 5 → 9 (Brute Force)
  63. Row 9 / Column 8 → 8 (Brute Force)
  64. Row 9 / Column 9 → 2 (Brute Force)
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