Solution for Evil Sudoku #3197682431595

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

This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Locked Triple, Locked Candidates Type 1 (Pointing) techniques.

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

Solution Steps:

  1. Row 4 / Column 6 → 8 (Naked Single)
  2. Row 4 / Column 4 → 7 (Naked Single)
  3. Row 6 / Column 6 → 1 (Naked Single)
  4. Row 6 / Column 4 → 2 (Naked Single)
  5. Row 5 / Column 5 → 9 (Full House)
  6. Row 1 / Column 5 → 8 (Hidden Single)
  7. Row 1 / Column 7 → 1 (Hidden Single)
  8. Row 6 / Column 3 → 8 (Hidden Single)
  9. Row 7 / Column 5 → 1 (Hidden Single)
  10. Locked Pair: 2,3 in r23c5 => r2c6,r89c5<>3
  11. Locked Triple: 4,7,8 in r789c2 => r23c2,r8c1<>4, r2c2,r89c1,r9c3<>7
  12. Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
  13. Locked Candidates Type 1 (Pointing): 7 in b3 => r78c8<>7
  14. Locked Candidates Type 1 (Pointing): 9 in b4 => r4c79<>9
  15. Row 4 / Column 7 → 3 (Naked Single)
  16. Row 2 / Column 9 → 9 (Hidden Single)
  17. Row 2 / Column 2 → 2 (Naked Single)
  18. Row 2 / Column 5 → 3 (Naked Single)
  19. Row 2 / Column 8 → 7 (Naked Single)
  20. Row 3 / Column 5 → 2 (Naked Single)
  21. Row 3 / Column 8 → 3 (Naked Single)
  22. Row 1 / Column 8 → 2 (Naked Single)
  23. Row 1 / Column 9 → 4 (Full House)
  24. Row 7 / Column 8 → 5 (Naked Single)
  25. Locked Candidates Type 1 (Pointing): 5 in b8 => r8c1<>5
  26. Row 8 / Column 1 → 3 (Naked Single)
  27. Row 1 / Column 1 → 7 (Naked Single)
  28. Row 1 / Column 3 → 3 (Full House)
  29. Row 7 / Column 6 → 3 (Hidden Single)
  30. Row 7 / Column 9 → 2 (Naked Single)
  31. Row 5 / Column 9 → 5 (Naked Single)
  32. Row 7 / Column 7 → 7 (Naked Single)
  33. Row 7 / Column 2 → 4 (Full House)
  34. Row 4 / Column 9 → 6 (Naked Single)
  35. Row 9 / Column 9 → 3 (Full House)
  36. Row 5 / Column 1 → 4 (Naked Single)
  37. Row 9 / Column 7 → 8 (Naked Single)
  38. Row 4 / Column 2 → 9 (Naked Single)
  39. Row 4 / Column 3 → 5 (Full House)
  40. Row 6 / Column 8 → 9 (Naked Single)
  41. Row 8 / Column 8 → 6 (Full House)
  42. Row 8 / Column 7 → 9 (Full House)
  43. Row 5 / Column 3 → 7 (Naked Single)
  44. Row 5 / Column 7 → 2 (Full House)
  45. Row 6 / Column 1 → 6 (Full House)
  46. Row 6 / Column 7 → 4 (Full House)
  47. Row 9 / Column 2 → 7 (Naked Single)
  48. Row 3 / Column 2 → 6 (Naked Single)
  49. Row 8 / Column 2 → 8 (Full House)
  50. Row 9 / Column 3 → 1 (Naked Single)
  51. Row 9 / Column 1 → 5 (Full House)
  52. Row 3 / Column 1 → 1 (Full House)
  53. Row 9 / Column 5 → 6 (Full House)
  54. Row 8 / Column 5 → 7 (Full House)
  55. Row 2 / Column 3 → 4 (Naked Single)
  56. Row 3 / Column 3 → 9 (Full House)
  57. Row 3 / Column 4 → 4 (Full House)
  58. Row 2 / Column 6 → 5 (Naked Single)
  59. Row 2 / Column 4 → 1 (Full House)
  60. Row 8 / Column 4 → 5 (Full House)
  61. Row 8 / Column 6 → 4 (Full House)
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