Solution for Evil Sudoku #1185713524895

3
8
7
8
3
1
5
4
2
4
3
8
2
7
5
5
1
4
1
8
5
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, Locked Pair, Full House techniques.

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Solution Steps:

  1. Row 3 / Column 2 → 5 (Hidden Single)
  2. Row 2 / Column 4 → 5 (Hidden Single)
  3. Row 2 / Column 8 → 8 (Hidden Single)
  4. Row 9 / Column 5 → 1 (Hidden Single)
  5. Row 9 / Column 7 → 4 (Hidden Single)
  6. Row 8 / Column 3 → 5 (Hidden Single)
  7. Row 2 / Column 5 → 7 (Hidden Single)
  8. Row 4 / Column 8 → 7 (Hidden Single)
  9. Row 1 / Column 9 → 7 (Hidden Single)
  10. Row 5 / Column 1 → 5 (Hidden Single)
  11. Row 7 / Column 1 → 7 (Hidden Single)
  12. Row 6 / Column 2 → 7 (Hidden Single)
  13. Row 1 / Column 1 → 4 (Hidden Single)
  14. Row 7 / Column 3 → 4 (Hidden Single)
  15. Locked Candidates Type 1 (Pointing): 1 in b4 => r1c3<>1
  16. Locked Candidates Type 1 (Pointing): 2 in b7 => r9c89<>2
  17. Locked Candidates Type 2 (Claiming): 3 in r9 => r78c8,r8c9<>3
  18. Naked Triple: 2,6,9 in r78c8,r8c9 => r9c89<>6, r9c89<>9
  19. Row 9 / Column 8 → 3 (Naked Single)
  20. Row 9 / Column 9 → 3 (Naked Single)
  21. Row 3 / Column 7 → 3 (Hidden Single)
  22. Row 4 / Column 4 → 3 (Hidden Single)
  23. Row 4 / Column 6 → 4 (Hidden Single)
  24. Row 8 / Column 4 → 4 (Hidden Single)
  25. Row 3 / Column 5 → 4 (Hidden Single)
  26. Row 4 / Column 3 → 1 (Hidden Single)
  27. Row 6 / Column 6 → 1 (Hidden Single)
  28. Locked Pair: 6,9 in r45c7 => r126c7,r56c9<>6, r126c7,r56c9<>9
  29. Row 6 / Column 7 → 2 (Naked Single)
  30. Row 5 / Column 9 → 8 (Naked Single)
  31. Row 1 / Column 7 → 1 (Naked Single)
  32. Row 2 / Column 7 → 1 (Naked Single)
  33. Row 6 / Column 9 → 8 (Naked Single)
  34. Locked Pair: 6,9 in r12c2 => r1c3,r2c1,r78c2<>6, r1c3,r2c1,r78c2<>9
  35. Row 7 / Column 2 → 3 (Naked Single)
  36. Row 8 / Column 2 → 3 (Naked Single)
  37. Row 1 / Column 3 → 2 (Naked Single)
  38. Row 2 / Column 1 → 2 (Naked Single)
  39. Row 3 / Column 6 → 2 (Hidden Single)
  40. Row 8 / Column 9 → 2 (Hidden Single)
  41. Row 7 / Column 5 → 2 (Hidden Single)
  42. Row 3 / Column 9 → 6 (Hidden Single)
  43. Row 3 / Column 8 → 9 (Full House)
  44. Row 7 / Column 8 → 6 (Full House)
  45. Row 8 / Column 8 → 6 (Full House)
  46. Row 7 / Column 4 → 9 (Full House)
  47. Row 8 / Column 5 → 9 (Full House)
  48. Row 8 / Column 6 → 9 (Full House)
  49. Row 6 / Column 4 → 6 (Full House)
  50. Row 1 / Column 5 → 6 (Full House)
  51. Row 5 / Column 5 → 6 (Full House)
  52. Row 2 / Column 6 → 6 (Full House)
  53. Row 1 / Column 2 → 9 (Full House)
  54. Row 6 / Column 3 → 9 (Naked Single)
  55. Row 5 / Column 3 → 9 (Naked Single)
  56. Row 5 / Column 7 → 9 (Naked Single)
  57. Row 4 / Column 1 → 6 (Full House)
  58. Row 4 / Column 7 → 6 (Full House)
  59. Row 2 / Column 2 → 9 (Naked Single)
  60. Row 9 / Column 3 → 6 (Naked Single)
  61. Row 9 / Column 1 → 9 (Naked Single)
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