Solution for Evil Sudoku #1188713524895

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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Full House techniques.

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Solution Steps:

  1. Row 5 / Column 3 → 8 (Hidden Single)
  2. Row 2 / Column 8 → 8 (Hidden Single)
  3. Row 9 / Column 5 → 1 (Hidden Single)
  4. Row 9 / Column 7 → 4 (Hidden Single)
  5. Row 2 / Column 5 → 7 (Hidden Single)
  6. Row 4 / Column 8 → 7 (Hidden Single)
  7. Row 1 / Column 9 → 7 (Hidden Single)
  8. Row 7 / Column 1 → 7 (Hidden Single)
  9. Row 6 / Column 2 → 7 (Hidden Single)
  10. Row 1 / Column 1 → 4 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 1 in b4 => r1c3<>1
  12. Locked Candidates Type 1 (Pointing): 5 in b9 => r5c9<>5
  13. Locked Candidates Type 2 (Claiming): 3 in r9 => r78c8,r8c9<>3
  14. Naked Triple: 1,6,9 in r6c346 => r6c79<>6, r6c79<>9
  15. Row 6 / Column 7 → 2 (Naked Single)
  16. Row 6 / Column 9 → 2 (Naked Single)
  17. Row 3 / Column 8 → 2 (Hidden Single)
  18. Row 9 / Column 8 → 3 (Hidden Single)
  19. Locked Candidates Type 2 (Claiming): 2 in r9 => r78c3<>2
  20. Row 7 / Column 5 → 2 (Hidden Single)
  21. Row 1 / Column 3 → 2 (Hidden Single)
  22. Row 2 / Column 6 → 2 (Hidden Single)
  23. Row 9 / Column 1 → 2 (Hidden Single)
  24. Locked Candidates Type 2 (Claiming): 6 in c8 => r89c9<>6
  25. Row 9 / Column 3 → 6 (Hidden Single)
  26. Row 9 / Column 9 → 5 (Hidden Single)
  27. Row 8 / Column 9 → 9 (Naked Single)
  28. Row 7 / Column 8 → 6 (Full House)
  29. Row 8 / Column 8 → 6 (Full House)
  30. Row 7 / Column 4 → 9 (Hidden Single)
  31. Row 6 / Column 4 → 6 (Naked Single)
  32. Row 2 / Column 4 → 5 (Naked Single)
  33. Row 7 / Column 2 → 3 (Hidden Single)
  34. Row 8 / Column 2 → 5 (Naked Single)
  35. Row 7 / Column 3 → 4 (Full House)
  36. Row 8 / Column 3 → 4 (Full House)
  37. Row 8 / Column 6 → 4 (Naked Single)
  38. Row 8 / Column 4 → 3 (Naked Single)
  39. Row 4 / Column 4 → 4 (Full House)
  40. Row 8 / Column 5 → 3 (Naked Single)
  41. Row 5 / Column 5 → 9 (Naked Single)
  42. Row 4 / Column 6 → 1 (Full House)
  43. Row 6 / Column 6 → 1 (Full House)
  44. Row 1 / Column 5 → 6 (Naked Single)
  45. Row 6 / Column 3 → 9 (Naked Single)
  46. Row 3 / Column 5 → 4 (Naked Single)
  47. Row 3 / Column 6 → 9 (Full House)
  48. Row 4 / Column 3 → 5 (Naked Single)
  49. Row 4 / Column 1 → 6 (Full House)
  50. Row 5 / Column 1 → 6 (Full House)
  51. Row 3 / Column 2 → 6 (Naked Single)
  52. Row 3 / Column 7 → 3 (Full House)
  53. Row 3 / Column 9 → 3 (Full House)
  54. Row 4 / Column 7 → 9 (Full House)
  55. Row 2 / Column 1 → 9 (Naked Single)
  56. Row 1 / Column 7 → 1 (Full House)
  57. Row 1 / Column 2 → 1 (Full House)
  58. Row 2 / Column 2 → 1 (Full House)
  59. Row 5 / Column 9 → 3 (Naked Single)
  60. Row 5 / Column 7 → 5 (Naked Single)
  61. Row 2 / Column 7 → 6 (Full House)
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