Solution for Evil Sudoku #1315624978396

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

This Sudoku Puzzle has 61 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 4 / Column 8 → 1 (Hidden Single)
  2. Row 1 / Column 6 → 5 (Hidden Single)
  3. Row 2 / Column 3 → 7 (Hidden Single)
  4. Row 8 / Column 9 → 9 (Hidden Single)
  5. Row 8 / Column 5 → 1 (Hidden Single)
  6. Row 9 / Column 4 → 6 (Hidden Single)
  7. Row 2 / Column 5 → 8 (Hidden Single)
  8. Row 7 / Column 6 → 7 (Hidden Single)
  9. Row 8 / Column 7 → 2 (Hidden Single)
  10. Row 9 / Column 6 → 8 (Hidden Single)
  11. Row 8 / Column 8 → 5 (Hidden Single)
  12. Row 6 / Column 5 → 5 (Hidden Single)
  13. Row 5 / Column 7 → 5 (Hidden Single)
  14. Locked Pair: 3,8 in r1c78 => r1c13<>3, r1c19,r3c79<>8
  15. Row 1 / Column 9 → 2 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 4 in b3 => r3c4<>4
  17. Locked Candidates Type 1 (Pointing): 3 in b5 => r6c23<>3
  18. Locked Pair: 2,8 in r46c2 => r239c2,r4c1,r6c3<>2, r3c2,r4c1<>8
  19. Row 2 / Column 2 → 3 (Naked Single)
  20. Row 3 / Column 1 → 8 (Hidden Single)
  21. Row 3 / Column 2 → 5 (Hidden Single)
  22. Row 9 / Column 2 → 1 (Naked Single)
  23. Row 9 / Column 9 → 4 (Naked Single)
  24. Row 3 / Column 9 → 7 (Naked Single)
  25. Row 5 / Column 9 → 6 (Naked Single)
  26. Row 9 / Column 7 → 3 (Naked Single)
  27. Row 3 / Column 7 → 4 (Naked Single)
  28. Row 5 / Column 5 → 4 (Naked Single)
  29. Row 4 / Column 5 → 6 (Full House)
  30. Row 6 / Column 9 → 8 (Naked Single)
  31. Row 7 / Column 9 → 1 (Full House)
  32. Row 1 / Column 7 → 8 (Naked Single)
  33. Row 1 / Column 8 → 3 (Full House)
  34. Row 7 / Column 8 → 8 (Naked Single)
  35. Row 6 / Column 8 → 4 (Full House)
  36. Row 4 / Column 7 → 7 (Full House)
  37. Row 7 / Column 7 → 6 (Full House)
  38. Row 9 / Column 3 → 2 (Naked Single)
  39. Row 9 / Column 1 → 5 (Full House)
  40. Row 6 / Column 2 → 2 (Naked Single)
  41. Row 4 / Column 2 → 8 (Full House)
  42. Row 6 / Column 3 → 6 (Naked Single)
  43. Row 3 / Column 3 → 1 (Naked Single)
  44. Row 3 / Column 4 → 2 (Full House)
  45. Row 6 / Column 6 → 3 (Naked Single)
  46. Row 6 / Column 4 → 7 (Full House)
  47. Row 1 / Column 3 → 9 (Naked Single)
  48. Row 4 / Column 4 → 9 (Naked Single)
  49. Row 4 / Column 6 → 2 (Full House)
  50. Row 4 / Column 1 → 4 (Full House)
  51. Row 8 / Column 6 → 4 (Naked Single)
  52. Row 2 / Column 6 → 9 (Full House)
  53. Row 8 / Column 4 → 3 (Full House)
  54. Row 1 / Column 1 → 6 (Naked Single)
  55. Row 1 / Column 4 → 1 (Full House)
  56. Row 2 / Column 1 → 2 (Full House)
  57. Row 2 / Column 4 → 4 (Full House)
  58. Row 5 / Column 3 → 3 (Naked Single)
  59. Row 5 / Column 1 → 9 (Full House)
  60. Row 7 / Column 1 → 3 (Full House)
  61. Row 7 / Column 3 → 4 (Full House)
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