Solution for Evil Sudoku #1227639814596

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

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

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

Solution Steps:

  1. Row 5 / Column 8 → 2 (Hidden Single)
  2. Row 4 / Column 1 → 7 (Hidden Single)
  3. Row 5 / Column 2 → 4 (Hidden Single)
  4. Row 1 / Column 8 → 8 (Hidden Single)
  5. Row 6 / Column 9 → 6 (Hidden Single)
  6. Row 2 / Column 4 → 2 (Hidden Single)
  7. Row 4 / Column 7 → 1 (Hidden Single)
  8. Row 7 / Column 2 → 1 (Hidden Single)
  9. Row 3 / Column 8 → 3 (Hidden Single)
  10. Row 4 / Column 9 → 4 (Hidden Single)
  11. Row 2 / Column 8 → 7 (Hidden Single)
  12. Row 5 / Column 6 → 7 (Hidden Single)
  13. Row 3 / Column 5 → 7 (Hidden Single)
  14. Locked Pair: 4,5 in r23c1 => r1c13,r3c3,r9c1<>4, r79c1<>5
  15. Row 1 / Column 1 → 3 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 9 in b1 => r6c3<>9
  17. Locked Candidates Type 1 (Pointing): 5 in b5 => r78c6<>5
  18. Locked Pair: 3,4 in r8c46 => r7c6,r8c239,r9c4<>3, r8c3,r9c4<>4
  19. Row 8 / Column 2 → 5 (Naked Single)
  20. Row 9 / Column 3 → 4 (Hidden Single)
  21. Row 9 / Column 9 → 7 (Hidden Single)
  22. Row 8 / Column 9 → 2 (Naked Single)
  23. Row 1 / Column 9 → 9 (Naked Single)
  24. Row 8 / Column 3 → 7 (Naked Single)
  25. Row 1 / Column 3 → 1 (Naked Single)
  26. Row 1 / Column 5 → 6 (Naked Single)
  27. Row 3 / Column 9 → 5 (Naked Single)
  28. Row 7 / Column 9 → 3 (Full House)
  29. Row 3 / Column 3 → 9 (Naked Single)
  30. Row 1 / Column 6 → 4 (Naked Single)
  31. Row 1 / Column 7 → 2 (Full House)
  32. Row 5 / Column 5 → 9 (Naked Single)
  33. Row 5 / Column 4 → 6 (Full House)
  34. Row 2 / Column 7 → 4 (Naked Single)
  35. Row 3 / Column 7 → 6 (Full House)
  36. Row 3 / Column 1 → 4 (Naked Single)
  37. Row 3 / Column 4 → 1 (Full House)
  38. Row 2 / Column 6 → 9 (Full House)
  39. Row 2 / Column 1 → 5 (Full House)
  40. Row 7 / Column 3 → 2 (Naked Single)
  41. Row 6 / Column 3 → 3 (Full House)
  42. Row 8 / Column 6 → 3 (Naked Single)
  43. Row 8 / Column 4 → 4 (Full House)
  44. Row 7 / Column 6 → 6 (Naked Single)
  45. Row 6 / Column 4 → 8 (Naked Single)
  46. Row 4 / Column 6 → 5 (Naked Single)
  47. Row 6 / Column 6 → 1 (Full House)
  48. Row 4 / Column 4 → 3 (Full House)
  49. Row 9 / Column 4 → 9 (Full House)
  50. Row 7 / Column 1 → 8 (Naked Single)
  51. Row 6 / Column 1 → 2 (Naked Single)
  52. Row 9 / Column 1 → 6 (Full House)
  53. Row 9 / Column 2 → 3 (Full House)
  54. Row 6 / Column 2 → 9 (Naked Single)
  55. Row 4 / Column 2 → 8 (Full House)
  56. Row 4 / Column 8 → 9 (Full House)
  57. Row 6 / Column 8 → 5 (Full House)
  58. Row 9 / Column 7 → 5 (Naked Single)
  59. Row 7 / Column 7 → 9 (Full House)
  60. Row 7 / Column 5 → 5 (Full House)
  61. Row 9 / Column 5 → 8 (Full House)
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