Solution for Evil Sudoku #1375713524895

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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Triple, Naked Single, Full House techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 3 / Column 8 → 7 (Hidden Single)
  3. Row 6 / Column 2 → 7 (Hidden Single)
  4. Row 1 / Column 3 → 4 (Hidden Single)
  5. Row 7 / Column 8 → 5 (Hidden Single)
  6. Row 8 / Column 6 → 5 (Hidden Single)
  7. Row 2 / Column 8 → 3 (Hidden Single)
  8. Row 2 / Column 7 → 5 (Hidden Single)
  9. Row 2 / Column 6 → 8 (Hidden Single)
  10. Row 5 / Column 9 → 5 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 3 in b2 => r3c2<>3
  12. Locked Candidates Type 1 (Pointing): 4 in b3 => r3c56<>4
  13. Row 6 / Column 6 → 4 (Hidden Single)
  14. Row 6 / Column 3 → 3 (Hidden Single)
  15. Row 3 / Column 6 → 3 (Hidden Single)
  16. Row 5 / Column 5 → 3 (Hidden Single)
  17. Row 4 / Column 6 → 6 (Hidden Single)
  18. Locked Candidates Type 1 (Pointing): 6 in b4 => r5c7<>6
  19. Locked Candidates Type 1 (Pointing): 8 in b4 => r79c1<>8
  20. Locked Candidates Type 1 (Pointing): 9 in b5 => r278c4<>9
  21. Locked Candidates Type 1 (Pointing): 9 in b2 => r789c5<>9
  22. Locked Triple: 2,4,6 in r789c5 => r23c5,r78c4<>2, r2c5,r7c4<>4, r23c5,r78c4<>6
  23. Row 2 / Column 5 → 9 (Naked Single)
  24. Row 3 / Column 5 → 9 (Naked Single)
  25. Row 7 / Column 4 → 8 (Naked Single)
  26. Row 8 / Column 4 → 8 (Naked Single)
  27. Row 2 / Column 4 → 4 (Hidden Single)
  28. Row 7 / Column 5 → 4 (Hidden Single)
  29. Row 9 / Column 9 → 8 (Hidden Single)
  30. Row 9 / Column 7 → 4 (Hidden Single)
  31. Row 3 / Column 9 → 4 (Hidden Single)
  32. Row 8 / Column 9 → 2 (Hidden Single)
  33. Row 8 / Column 5 → 6 (Naked Single)
  34. Row 8 / Column 2 → 9 (Naked Single)
  35. Row 9 / Column 5 → 2 (Naked Single)
  36. Row 8 / Column 3 → 1 (Naked Single)
  37. Row 8 / Column 8 → 1 (Naked Single)
  38. Row 9 / Column 1 → 6 (Naked Single)
  39. Row 9 / Column 3 → 6 (Naked Single)
  40. Row 4 / Column 8 → 9 (Naked Single)
  41. Row 2 / Column 1 → 2 (Naked Single)
  42. Row 2 / Column 2 → 6 (Full House)
  43. Row 7 / Column 3 → 2 (Naked Single)
  44. Row 7 / Column 1 → 3 (Full House)
  45. Row 7 / Column 2 → 3 (Full House)
  46. Row 9 / Column 8 → 9 (Naked Single)
  47. Row 5 / Column 3 → 9 (Naked Single)
  48. Row 5 / Column 7 → 8 (Full House)
  49. Row 5 / Column 1 → 8 (Full House)
  50. Row 4 / Column 3 → 2 (Naked Single)
  51. Row 4 / Column 4 → 1 (Naked Single)
  52. Row 6 / Column 4 → 9 (Full House)
  53. Row 6 / Column 9 → 6 (Naked Single)
  54. Row 4 / Column 7 → 1 (Full House)
  55. Row 1 / Column 9 → 9 (Full House)
  56. Row 6 / Column 7 → 1 (Full House)
  57. Row 3 / Column 2 → 6 (Naked Single)
  58. Row 4 / Column 1 → 8 (Naked Single)
  59. Row 1 / Column 2 → 3 (Naked Single)
  60. Row 1 / Column 1 → 9 (Naked Single)
  61. Row 3 / Column 7 → 2 (Naked Single)
  62. Row 1 / Column 7 → 6 (Full House)
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