Solution for Evil Sudoku #2359781263493

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

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

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Solution Steps:

  1. Row 6 / Column 6 → 3 (Naked Single)
  2. Row 5 / Column 6 → 6 (Naked Single)
  3. Row 6 / Column 4 → 5 (Naked Single)
  4. Row 4 / Column 4 → 8 (Full House)
  5. Row 2 / Column 8 → 8 (Hidden Single)
  6. Row 5 / Column 3 → 8 (Hidden Single)
  7. Row 2 / Column 2 → 2 (Hidden Single)
  8. Row 9 / Column 6 → 2 (Hidden Single)
  9. Row 9 / Column 9 → 8 (Hidden Single)
  10. Row 8 / Column 5 → 8 (Hidden Single)
  11. Row 2 / Column 1 → 3 (Hidden Single)
  12. Row 3 / Column 2 → 7 (Hidden Single)
  13. Row 8 / Column 4 → 9 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 9 in b1 => r6c3<>9
  15. Locked Candidates Type 1 (Pointing): 1 in b2 => r2c3<>1
  16. Locked Candidates Type 1 (Pointing): 7 in b2 => r2c7<>7
  17. Locked Pair: 4,6 in r23c7 => r1c78,r3c9,r589c7<>4, r189c7,r3c9<>6
  18. Row 3 / Column 9 → 9 (Naked Single)
  19. Row 3 / Column 5 → 6 (Naked Single)
  20. Row 6 / Column 9 → 4 (Naked Single)
  21. Row 1 / Column 4 → 4 (Naked Single)
  22. Row 3 / Column 7 → 4 (Naked Single)
  23. Row 9 / Column 5 → 5 (Naked Single)
  24. Row 5 / Column 9 → 3 (Naked Single)
  25. Row 6 / Column 3 → 1 (Naked Single)
  26. Row 6 / Column 2 → 9 (Full House)
  27. Row 1 / Column 1 → 6 (Naked Single)
  28. Row 2 / Column 4 → 1 (Naked Single)
  29. Row 2 / Column 7 → 6 (Naked Single)
  30. Row 7 / Column 5 → 7 (Naked Single)
  31. Row 2 / Column 5 → 9 (Full House)
  32. Row 2 / Column 6 → 7 (Full House)
  33. Row 2 / Column 3 → 4 (Full House)
  34. Row 4 / Column 9 → 7 (Naked Single)
  35. Row 7 / Column 9 → 6 (Full House)
  36. Row 5 / Column 7 → 5 (Naked Single)
  37. Row 3 / Column 3 → 5 (Naked Single)
  38. Row 3 / Column 1 → 1 (Full House)
  39. Row 1 / Column 3 → 9 (Full House)
  40. Row 4 / Column 3 → 6 (Full House)
  41. Row 4 / Column 1 → 5 (Naked Single)
  42. Row 8 / Column 1 → 4 (Full House)
  43. Row 7 / Column 4 → 3 (Naked Single)
  44. Row 9 / Column 4 → 6 (Full House)
  45. Row 5 / Column 2 → 4 (Naked Single)
  46. Row 5 / Column 8 → 9 (Full House)
  47. Row 4 / Column 2 → 3 (Full House)
  48. Row 8 / Column 6 → 1 (Naked Single)
  49. Row 7 / Column 6 → 4 (Full House)
  50. Row 9 / Column 2 → 1 (Naked Single)
  51. Row 8 / Column 7 → 7 (Naked Single)
  52. Row 7 / Column 2 → 5 (Naked Single)
  53. Row 7 / Column 8 → 1 (Full House)
  54. Row 8 / Column 2 → 6 (Full House)
  55. Row 8 / Column 8 → 5 (Full House)
  56. Row 9 / Column 7 → 3 (Naked Single)
  57. Row 9 / Column 8 → 4 (Full House)
  58. Row 1 / Column 7 → 2 (Naked Single)
  59. Row 1 / Column 8 → 7 (Full House)
  60. Row 4 / Column 8 → 2 (Full House)
  61. Row 4 / Column 7 → 1 (Full House)
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