Solution for Evil Sudoku #1337713524895

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

This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Locked Candidates Type 2 (Claiming), Locked Triple, Full House techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 4 / Column 8 → 7 (Hidden Single)
  3. Row 1 / Column 3 → 4 (Hidden Single)
  4. Row 9 / Column 5 → 7 (Hidden Single)
  5. Row 8 / Column 2 → 7 (Hidden Single)
  6. Row 5 / Column 5 → 3 (Hidden Single)
  7. Row 7 / Column 2 → 8 (Hidden Single)
  8. Row 2 / Column 1 → 3 (Hidden Single)
  9. Row 6 / Column 3 → 3 (Hidden Single)
  10. Row 3 / Column 8 → 3 (Hidden Single)
  11. Row 1 / Column 1 → 5 (Hidden Single)
  12. Row 5 / Column 3 → 5 (Hidden Single)
  13. Locked Candidates Type 1 (Pointing): 6 in b1 => r6c2<>6
  14. Row 6 / Column 2 → 9 (Naked Single)
  15. Locked Candidates Type 1 (Pointing): 9 in b5 => r4c7<>9
  16. Locked Candidates Type 1 (Pointing): 1 in b6 => r9c7<>1
  17. Locked Candidates Type 1 (Pointing): 8 in b8 => r8c9<>8
  18. Locked Candidates Type 2 (Claiming): 9 in r1 => r2c78,r3c79<>9
  19. Locked Candidates Type 2 (Claiming): 9 in r2 => r3c56<>9
  20. Locked Candidates Type 2 (Claiming): 9 in c1 => r789c3<>9
  21. Locked Triple: 1,2,6 in r789c3 => r4c3,r79c1<>2, r4c3,r79c1<>6
  22. Row 4 / Column 3 → 6 (Naked Single)
  23. Row 7 / Column 1 → 9 (Naked Single)
  24. Row 9 / Column 1 → 9 (Naked Single)
  25. Row 4 / Column 6 → 9 (Naked Single)
  26. Row 5 / Column 1 → 8 (Naked Single)
  27. Row 7 / Column 3 → 2 (Naked Single)
  28. Row 4 / Column 4 → 1 (Naked Single)
  29. Row 4 / Column 1 → 2 (Naked Single)
  30. Row 8 / Column 3 → 1 (Naked Single)
  31. Row 9 / Column 3 → 1 (Naked Single)
  32. Row 4 / Column 7 → 8 (Naked Single)
  33. Row 9 / Column 8 → 6 (Naked Single)
  34. Row 2 / Column 8 → 5 (Naked Single)
  35. Row 7 / Column 8 → 5 (Naked Single)
  36. Row 8 / Column 8 → 9 (Naked Single)
  37. Row 8 / Column 9 → 2 (Naked Single)
  38. Row 8 / Column 5 → 6 (Naked Single)
  39. Row 9 / Column 7 → 4 (Naked Single)
  40. Row 7 / Column 4 → 4 (Naked Single)
  41. Row 7 / Column 5 → 4 (Naked Single)
  42. Row 9 / Column 9 → 8 (Naked Single)
  43. Row 6 / Column 4 → 6 (Naked Single)
  44. Row 6 / Column 6 → 4 (Full House)
  45. Row 3 / Column 5 → 2 (Naked Single)
  46. Row 6 / Column 9 → 5 (Naked Single)
  47. Row 6 / Column 7 → 1 (Full House)
  48. Row 2 / Column 5 → 9 (Naked Single)
  49. Row 3 / Column 2 → 6 (Naked Single)
  50. Row 1 / Column 2 → 2 (Full House)
  51. Row 2 / Column 2 → 2 (Full House)
  52. Row 3 / Column 7 → 6 (Naked Single)
  53. Row 1 / Column 7 → 9 (Full House)
  54. Row 1 / Column 9 → 9 (Full House)
  55. Row 2 / Column 4 → 8 (Naked Single)
  56. Row 8 / Column 4 → 5 (Full House)
  57. Row 8 / Column 6 → 8 (Full House)
  58. Row 3 / Column 6 → 5 (Naked Single)
  59. Row 2 / Column 6 → 6 (Full House)
  60. Row 3 / Column 9 → 4 (Naked Single)
  61. Row 2 / Column 7 → 6 (Naked Single)
  62. Row 5 / Column 7 → 9 (Naked Single)
  63. Row 5 / Column 9 → 6 (Naked Single)
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