Solution for Evil Sudoku #2179568341295

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

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

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

Solution Steps:

  1. Row 6 / Column 6 → 9 (Naked Single)
  2. Row 6 / Column 4 → 6 (Naked Single)
  3. Row 4 / Column 4 → 1 (Naked Single)
  4. Row 4 / Column 6 → 8 (Naked Single)
  5. Row 5 / Column 5 → 7 (Full House)
  6. Row 9 / Column 3 → 1 (Hidden Single)
  7. Row 9 / Column 5 → 6 (Hidden Single)
  8. Row 4 / Column 7 → 6 (Hidden Single)
  9. Row 3 / Column 5 → 1 (Hidden Single)
  10. Locked Pair: 4,8 in r78c5 => r12c5,r8c4<>4
  11. Locked Triple: 3,6,9 in r123c8 => r2c9,r78c8<>3, r1c79,r2c9,r8c8<>9
  12. Locked Candidates Type 1 (Pointing): 2 in b4 => r13c1<>2
  13. Locked Candidates Type 1 (Pointing): 7 in b6 => r6c13<>7
  14. Row 6 / Column 3 → 4 (Naked Single)
  15. Row 8 / Column 1 → 7 (Hidden Single)
  16. Row 8 / Column 8 → 8 (Naked Single)
  17. Row 8 / Column 5 → 4 (Naked Single)
  18. Row 7 / Column 5 → 8 (Naked Single)
  19. Row 8 / Column 2 → 9 (Naked Single)
  20. Row 7 / Column 2 → 4 (Naked Single)
  21. Row 9 / Column 2 → 8 (Naked Single)
  22. Row 9 / Column 1 → 3 (Full House)
  23. Row 3 / Column 2 → 2 (Naked Single)
  24. Locked Candidates Type 1 (Pointing): 2 in b2 => r2c9<>2
  25. Row 2 / Column 9 → 4 (Naked Single)
  26. Row 9 / Column 9 → 9 (Naked Single)
  27. Row 9 / Column 7 → 4 (Full House)
  28. Row 1 / Column 1 → 4 (Hidden Single)
  29. Row 3 / Column 1 → 8 (Naked Single)
  30. Row 3 / Column 3 → 9 (Naked Single)
  31. Row 5 / Column 1 → 2 (Naked Single)
  32. Row 6 / Column 1 → 5 (Full House)
  33. Row 1 / Column 3 → 6 (Naked Single)
  34. Row 3 / Column 8 → 3 (Naked Single)
  35. Row 3 / Column 4 → 4 (Full House)
  36. Row 5 / Column 9 → 3 (Naked Single)
  37. Row 4 / Column 2 → 7 (Naked Single)
  38. Row 2 / Column 2 → 5 (Full House)
  39. Row 2 / Column 3 → 7 (Full House)
  40. Row 6 / Column 8 → 7 (Naked Single)
  41. Row 6 / Column 7 → 2 (Full House)
  42. Row 1 / Column 8 → 9 (Naked Single)
  43. Row 4 / Column 9 → 5 (Naked Single)
  44. Row 5 / Column 7 → 9 (Full House)
  45. Row 5 / Column 3 → 8 (Full House)
  46. Row 4 / Column 3 → 3 (Full House)
  47. Row 2 / Column 5 → 9 (Naked Single)
  48. Row 1 / Column 5 → 5 (Full House)
  49. Row 7 / Column 8 → 5 (Naked Single)
  50. Row 2 / Column 8 → 6 (Full House)
  51. Row 1 / Column 7 → 1 (Naked Single)
  52. Row 1 / Column 9 → 2 (Full House)
  53. Row 7 / Column 9 → 1 (Full House)
  54. Row 8 / Column 7 → 3 (Naked Single)
  55. Row 7 / Column 7 → 7 (Full House)
  56. Row 7 / Column 6 → 3 (Full House)
  57. Row 8 / Column 4 → 2 (Naked Single)
  58. Row 2 / Column 4 → 3 (Full House)
  59. Row 2 / Column 6 → 2 (Full House)
  60. Row 8 / Column 6 → 1 (Full House)
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