Solution for Evil Sudoku #1352713524895

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

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

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 1 / Column 3 → 4 (Hidden Single)
  3. Row 2 / Column 1 → 5 (Hidden Single)
  4. Row 3 / Column 8 → 5 (Hidden Single)
  5. Row 2 / Column 8 → 3 (Hidden Single)
  6. Row 3 / Column 9 → 7 (Hidden Single)
  7. Row 4 / Column 8 → 7 (Hidden Single)
  8. Row 6 / Column 2 → 7 (Hidden Single)
  9. Row 9 / Column 9 → 4 (Hidden Single)
  10. Row 9 / Column 1 → 7 (Hidden Single)
  11. Row 8 / Column 5 → 7 (Hidden Single)
  12. Row 9 / Column 7 → 8 (Hidden Single)
  13. Row 4 / Column 1 → 8 (Hidden Single)
  14. Row 5 / Column 9 → 8 (Hidden Single)
  15. Row 8 / Column 9 → 2 (Hidden Single)
  16. Locked Candidates Type 1 (Pointing): 2 in b1 => r7c2<>2
  17. Locked Candidates Type 1 (Pointing): 3 in b2 => r3c2<>3
  18. Naked Pair: 6,9 in r4c36 => r4c47<>6, r4c47<>9
  19. Row 4 / Column 4 → 1 (Naked Single)
  20. Row 4 / Column 7 → 1 (Naked Single)
  21. Naked Triple: 6,8,9 in r8c246 => r8c38<>6, r8c38<>9
  22. Row 8 / Column 3 → 1 (Naked Single)
  23. Row 8 / Column 8 → 1 (Naked Single)
  24. Hidden Pair: 1,5 in r56c7 => r56c7<>6, r56c7<>9
  25. Row 5 / Column 7 → 5 (Naked Single)
  26. Row 6 / Column 7 → 5 (Naked Single)
  27. Row 6 / Column 9 → 6 (Hidden Single)
  28. Row 1 / Column 9 → 9 (Full House)
  29. Locked Triple: 3,6,9 in r456c3 => r5c1,r7c3<>3, r5c1,r79c3<>6, r5c1,r79c3<>9
  30. Row 7 / Column 3 → 2 (Naked Single)
  31. Row 9 / Column 3 → 2 (Naked Single)
  32. Row 5 / Column 1 → 9 (Naked Single)
  33. Row 4 / Column 3 → 6 (Naked Single)
  34. Row 6 / Column 3 → 3 (Naked Single)
  35. Row 4 / Column 6 → 9 (Naked Single)
  36. Row 5 / Column 3 → 3 (Naked Single)
  37. Row 6 / Column 4 → 4 (Naked Single)
  38. Row 6 / Column 6 → 4 (Naked Single)
  39. Row 5 / Column 5 → 6 (Naked Single)
  40. Row 9 / Column 5 → 9 (Naked Single)
  41. Row 2 / Column 5 → 4 (Naked Single)
  42. Row 7 / Column 5 → 4 (Naked Single)
  43. Row 9 / Column 8 → 6 (Naked Single)
  44. Row 3 / Column 5 → 3 (Naked Single)
  45. Row 7 / Column 8 → 9 (Naked Single)
  46. Row 3 / Column 6 → 6 (Naked Single)
  47. Row 2 / Column 6 → 8 (Naked Single)
  48. Row 2 / Column 4 → 9 (Full House)
  49. Row 3 / Column 2 → 9 (Naked Single)
  50. Row 3 / Column 7 → 4 (Full House)
  51. Row 8 / Column 6 → 8 (Naked Single)
  52. Row 7 / Column 4 → 6 (Full House)
  53. Row 8 / Column 4 → 6 (Full House)
  54. Row 8 / Column 2 → 6 (Naked Single)
  55. Row 7 / Column 1 → 3 (Naked Single)
  56. Row 2 / Column 2 → 2 (Naked Single)
  57. Row 2 / Column 7 → 6 (Full House)
  58. Row 1 / Column 7 → 2 (Full House)
  59. Row 1 / Column 1 → 6 (Naked Single)
  60. Row 1 / Column 2 → 3 (Full House)
  61. Row 7 / Column 2 → 8 (Naked Single)
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