Solution for Evil Sudoku #1139851724696

2
7
5
9
4
8
2
7
7
5
6
3
4
3
2
9
7
9
8
3
8
6
2
1

This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Full House techniques.

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Solution Steps:

  1. Row 3 / Column 4 → 2 (Hidden Single)
  2. Row 2 / Column 1 → 7 (Hidden Single)
  3. Row 1 / Column 6 → 8 (Hidden Single)
  4. Row 6 / Column 2 → 3 (Hidden Single)
  5. Row 8 / Column 7 → 2 (Hidden Single)
  6. Row 2 / Column 5 → 3 (Hidden Single)
  7. Row 8 / Column 5 → 4 (Hidden Single)
  8. Row 9 / Column 4 → 9 (Hidden Single)
  9. Row 1 / Column 4 → 4 (Hidden Single)
  10. Row 2 / Column 3 → 5 (Hidden Single)
  11. Row 2 / Column 2 → 9 (Hidden Single)
  12. Row 5 / Column 3 → 9 (Hidden Single)
  13. Row 4 / Column 5 → 9 (Hidden Single)
  14. Locked Pair: 4,6 in r9c23 => r7c13,r9c19<>4, r9c79<>6
  15. Row 9 / Column 1 → 5 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 6 in b5 => r4c78<>6
  17. Locked Pair: 4,5 in r46c8 => r178c8,r4c7,r6c9<>5, r6c9,r7c8<>4
  18. Row 8 / Column 8 → 6 (Naked Single)
  19. Row 7 / Column 9 → 4 (Hidden Single)
  20. Row 7 / Column 8 → 9 (Hidden Single)
  21. Row 1 / Column 8 → 3 (Naked Single)
  22. Row 1 / Column 1 → 1 (Naked Single)
  23. Row 1 / Column 3 → 6 (Naked Single)
  24. Row 5 / Column 1 → 8 (Naked Single)
  25. Row 7 / Column 1 → 2 (Naked Single)
  26. Row 1 / Column 7 → 5 (Naked Single)
  27. Row 1 / Column 9 → 9 (Full House)
  28. Row 3 / Column 2 → 4 (Naked Single)
  29. Row 9 / Column 3 → 4 (Naked Single)
  30. Row 5 / Column 5 → 1 (Naked Single)
  31. Row 6 / Column 5 → 8 (Full House)
  32. Row 4 / Column 1 → 4 (Naked Single)
  33. Row 3 / Column 1 → 3 (Full House)
  34. Row 3 / Column 3 → 8 (Full House)
  35. Row 7 / Column 3 → 1 (Naked Single)
  36. Row 9 / Column 2 → 6 (Full House)
  37. Row 4 / Column 2 → 1 (Full House)
  38. Row 6 / Column 3 → 2 (Full House)
  39. Row 7 / Column 7 → 3 (Naked Single)
  40. Row 7 / Column 6 → 5 (Full House)
  41. Row 4 / Column 8 → 5 (Naked Single)
  42. Row 6 / Column 8 → 4 (Full House)
  43. Row 4 / Column 7 → 8 (Naked Single)
  44. Row 6 / Column 6 → 7 (Naked Single)
  45. Row 4 / Column 4 → 6 (Naked Single)
  46. Row 4 / Column 6 → 2 (Full House)
  47. Row 6 / Column 4 → 5 (Full House)
  48. Row 6 / Column 9 → 1 (Full House)
  49. Row 9 / Column 7 → 7 (Naked Single)
  50. Row 8 / Column 6 → 1 (Naked Single)
  51. Row 9 / Column 6 → 3 (Naked Single)
  52. Row 9 / Column 9 → 8 (Full House)
  53. Row 8 / Column 9 → 5 (Full House)
  54. Row 2 / Column 6 → 6 (Full House)
  55. Row 2 / Column 4 → 1 (Full House)
  56. Row 8 / Column 4 → 7 (Full House)
  57. Row 3 / Column 9 → 6 (Naked Single)
  58. Row 3 / Column 7 → 1 (Full House)
  59. Row 5 / Column 7 → 6 (Full House)
  60. Row 5 / Column 9 → 7 (Full House)
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