Solution for Evil Sudoku #1333713524895

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

This Sudoku Puzzle has 66 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Hidden Pair, Naked Single, Naked Pair, Full House techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 2 / Column 2 → 3 (Hidden Single)
  3. Row 5 / Column 5 → 3 (Hidden Single)
  4. Row 1 / Column 3 → 4 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 5 in b1 => r5c1<>5
  6. Locked Candidates Type 1 (Pointing): 8 in b4 => r79c1<>8
  7. Locked Candidates Type 1 (Pointing): 4 in b9 => r9c5<>4
  8. Locked Candidates Type 2 (Claiming): 8 in r9 => r8c9<>8
  9. Hidden Pair: 4,8 in r9c79 => r9c7<>1, r9c79<>2, r9c79<>6, r9c79<>9
  10. Row 8 / Column 9 → 2 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 1 in b9 => r4c8<>1
  12. Locked Candidates Type 1 (Pointing): 5 in b9 => r23c8<>5
  13. Locked Candidates Type 1 (Pointing): 6 in b9 => r234c8<>6
  14. Row 2 / Column 8 → 9 (Naked Single)
  15. Row 3 / Column 8 → 7 (Naked Single)
  16. Row 4 / Column 8 → 7 (Naked Single)
  17. Row 9 / Column 1 → 7 (Hidden Single)
  18. Row 6 / Column 2 → 7 (Hidden Single)
  19. Row 8 / Column 5 → 7 (Hidden Single)
  20. Locked Candidates Type 1 (Pointing): 9 in b2 => r3c2<>9
  21. Locked Candidates Type 2 (Claiming): 9 in c7 => r56c9<>9
  22. Naked Pair: 5,6 in r16c9 => r35c9<>5, r35c9<>6
  23. Row 3 / Column 9 → 4 (Naked Single)
  24. Row 5 / Column 9 → 8 (Naked Single)
  25. Row 9 / Column 9 → 8 (Naked Single)
  26. Row 9 / Column 7 → 4 (Naked Single)
  27. Row 4 / Column 1 → 8 (Hidden Single)
  28. Row 4 / Column 3 → 2 (Hidden Single)
  29. Row 9 / Column 5 → 2 (Hidden Single)
  30. Row 2 / Column 4 → 2 (Hidden Single)
  31. Row 9 / Column 3 → 9 (Hidden Single)
  32. Row 7 / Column 3 → 6 (Naked Single)
  33. Row 5 / Column 3 → 5 (Naked Single)
  34. Row 6 / Column 3 → 5 (Naked Single)
  35. Row 7 / Column 1 → 2 (Naked Single)
  36. Row 7 / Column 8 → 5 (Naked Single)
  37. Row 8 / Column 2 → 8 (Naked Single)
  38. Row 8 / Column 3 → 1 (Naked Single)
  39. Row 7 / Column 2 → 8 (Full House)
  40. Row 6 / Column 9 → 6 (Naked Single)
  41. Row 8 / Column 8 → 6 (Naked Single)
  42. Row 1 / Column 9 → 5 (Naked Single)
  43. Row 5 / Column 7 → 9 (Naked Single)
  44. Row 5 / Column 1 → 6 (Full House)
  45. Row 9 / Column 8 → 1 (Naked Single)
  46. Row 2 / Column 7 → 6 (Naked Single)
  47. Row 1 / Column 7 → 2 (Full House)
  48. Row 3 / Column 7 → 2 (Full House)
  49. Row 4 / Column 7 → 1 (Naked Single)
  50. Row 6 / Column 7 → 1 (Naked Single)
  51. Row 1 / Column 1 → 9 (Naked Single)
  52. Row 2 / Column 1 → 5 (Full House)
  53. Row 3 / Column 2 → 6 (Full House)
  54. Row 1 / Column 2 → 6 (Full House)
  55. Row 2 / Column 5 → 4 (Naked Single)
  56. Row 3 / Column 5 → 9 (Full House)
  57. Row 2 / Column 6 → 8 (Full House)
  58. Row 7 / Column 5 → 9 (Full House)
  59. Row 3 / Column 6 → 5 (Full House)
  60. Row 8 / Column 4 → 5 (Full House)
  61. Row 8 / Column 6 → 5 (Full House)
  62. Row 7 / Column 4 → 4 (Naked Single)
  63. Row 6 / Column 4 → 9 (Naked Single)
  64. Row 4 / Column 4 → 6 (Full House)
  65. Row 4 / Column 6 → 6 (Naked Single)
  66. Row 6 / Column 6 → 4 (Naked Single)
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