Solution for Evil Sudoku #2421964785396

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

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.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 2 → 5 (Hidden Single)
  2. Row 4 / Column 9 → 9 (Hidden Single)
  3. Row 5 / Column 8 → 2 (Hidden Single)
  4. Row 9 / Column 8 → 7 (Hidden Single)
  5. Row 6 / Column 7 → 8 (Hidden Single)
  6. Row 6 / Column 1 → 1 (Hidden Single)
  7. Row 3 / Column 2 → 8 (Hidden Single)
  8. Row 8 / Column 4 → 2 (Hidden Single)
  9. Row 7 / Column 8 → 6 (Hidden Single)
  10. Row 6 / Column 9 → 5 (Hidden Single)
  11. Row 8 / Column 8 → 1 (Hidden Single)
  12. Row 7 / Column 5 → 1 (Hidden Single)
  13. Row 5 / Column 6 → 1 (Hidden Single)
  14. Locked Pair: 3,5 in r78c1 => r13c1<>3, r19c1,r79c3<>5
  15. Row 9 / Column 1 → 6 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 3 in b5 => r23c6<>3
  17. Locked Pair: 5,6 in r2c46 => r1c4,r2c239,r3c6<>6, r1c4,r2c3<>5
  18. Row 2 / Column 2 → 3 (Naked Single)
  19. Row 1 / Column 3 → 5 (Hidden Single)
  20. Row 1 / Column 9 → 1 (Hidden Single)
  21. Row 2 / Column 9 → 2 (Naked Single)
  22. Row 2 / Column 3 → 1 (Naked Single)
  23. Row 9 / Column 9 → 4 (Naked Single)
  24. Row 7 / Column 9 → 3 (Naked Single)
  25. Row 3 / Column 9 → 6 (Full House)
  26. Row 9 / Column 3 → 8 (Naked Single)
  27. Row 9 / Column 5 → 9 (Naked Single)
  28. Row 7 / Column 1 → 5 (Naked Single)
  29. Row 8 / Column 7 → 5 (Naked Single)
  30. Row 3 / Column 3 → 2 (Naked Single)
  31. Row 7 / Column 3 → 4 (Naked Single)
  32. Row 8 / Column 1 → 3 (Full House)
  33. Row 8 / Column 6 → 4 (Full House)
  34. Row 4 / Column 3 → 6 (Full House)
  35. Row 5 / Column 5 → 4 (Naked Single)
  36. Row 5 / Column 4 → 9 (Full House)
  37. Row 9 / Column 6 → 5 (Naked Single)
  38. Row 9 / Column 7 → 2 (Full House)
  39. Row 7 / Column 7 → 9 (Full House)
  40. Row 7 / Column 4 → 8 (Full House)
  41. Row 3 / Column 6 → 9 (Naked Single)
  42. Row 2 / Column 6 → 6 (Naked Single)
  43. Row 2 / Column 4 → 5 (Full House)
  44. Row 4 / Column 4 → 7 (Naked Single)
  45. Row 3 / Column 1 → 7 (Naked Single)
  46. Row 6 / Column 6 → 3 (Naked Single)
  47. Row 4 / Column 6 → 8 (Full House)
  48. Row 6 / Column 4 → 6 (Full House)
  49. Row 1 / Column 4 → 4 (Full House)
  50. Row 4 / Column 1 → 2 (Naked Single)
  51. Row 1 / Column 1 → 9 (Full House)
  52. Row 1 / Column 2 → 6 (Full House)
  53. Row 4 / Column 2 → 4 (Naked Single)
  54. Row 4 / Column 8 → 3 (Full House)
  55. Row 6 / Column 8 → 4 (Full House)
  56. Row 6 / Column 2 → 7 (Full House)
  57. Row 3 / Column 5 → 3 (Naked Single)
  58. Row 1 / Column 5 → 7 (Full House)
  59. Row 1 / Column 7 → 3 (Full House)
  60. Row 3 / Column 7 → 4 (Full House)
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