Solution for Evil Sudoku #1219584763295

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

This Sudoku Puzzle has 59 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 4 / Column 4 → 9 (Naked Single)
  2. Row 6 / Column 4 → 8 (Naked Single)
  3. Row 6 / Column 6 → 3 (Naked Single)
  4. Row 4 / Column 6 → 4 (Naked Single)
  5. Row 5 / Column 5 → 1 (Full House)
  6. Row 5 / Column 1 → 8 (Hidden Single)
  7. Row 7 / Column 1 → 3 (Hidden Single)
  8. Row 3 / Column 6 → 8 (Hidden Single)
  9. Row 5 / Column 7 → 3 (Hidden Single)
  10. Locked Pair: 4,6 in r5c23 => r5c89,r6c2<>6
  11. Locked Triple: 7,8,9 in r2c789 => r1c8,r2c23<>7, r1c89,r2c2,r3c9<>9
  12. Locked Candidates Type 1 (Pointing): 1 in b2 => r79c4<>1
  13. Row 7 / Column 4 → 6 (Naked Single)
  14. Row 9 / Column 2 → 1 (Hidden Single)
  15. Row 2 / Column 2 → 4 (Naked Single)
  16. Row 5 / Column 2 → 6 (Naked Single)
  17. Row 5 / Column 3 → 4 (Naked Single)
  18. Row 8 / Column 2 → 9 (Naked Single)
  19. Row 8 / Column 3 → 6 (Naked Single)
  20. Row 8 / Column 1 → 4 (Naked Single)
  21. Row 9 / Column 1 → 7 (Full House)
  22. Row 8 / Column 7 → 2 (Naked Single)
  23. Locked Candidates Type 1 (Pointing): 2 in b6 => r1c8<>2
  24. Row 1 / Column 8 → 6 (Naked Single)
  25. Row 1 / Column 1 → 9 (Naked Single)
  26. Row 3 / Column 1 → 6 (Full House)
  27. Row 9 / Column 9 → 6 (Hidden Single)
  28. Row 9 / Column 7 → 4 (Naked Single)
  29. Row 7 / Column 7 → 9 (Naked Single)
  30. Row 9 / Column 5 → 2 (Naked Single)
  31. Row 9 / Column 4 → 5 (Full House)
  32. Row 2 / Column 7 → 7 (Naked Single)
  33. Row 6 / Column 7 → 6 (Full House)
  34. Row 7 / Column 9 → 8 (Naked Single)
  35. Row 1 / Column 5 → 7 (Naked Single)
  36. Row 2 / Column 4 → 1 (Naked Single)
  37. Row 3 / Column 4 → 2 (Full House)
  38. Row 8 / Column 6 → 1 (Naked Single)
  39. Row 8 / Column 8 → 5 (Full House)
  40. Row 7 / Column 8 → 1 (Full House)
  41. Row 2 / Column 9 → 9 (Naked Single)
  42. Row 1 / Column 6 → 5 (Naked Single)
  43. Row 3 / Column 5 → 9 (Full House)
  44. Row 7 / Column 5 → 4 (Full House)
  45. Row 7 / Column 6 → 7 (Full House)
  46. Row 2 / Column 3 → 5 (Naked Single)
  47. Row 2 / Column 8 → 8 (Full House)
  48. Row 3 / Column 9 → 3 (Naked Single)
  49. Row 1 / Column 9 → 2 (Full House)
  50. Row 5 / Column 9 → 5 (Full House)
  51. Row 5 / Column 8 → 9 (Full House)
  52. Row 1 / Column 3 → 3 (Full House)
  53. Row 3 / Column 2 → 7 (Naked Single)
  54. Row 3 / Column 3 → 1 (Full House)
  55. Row 4 / Column 3 → 7 (Full House)
  56. Row 6 / Column 2 → 2 (Naked Single)
  57. Row 4 / Column 2 → 3 (Full House)
  58. Row 4 / Column 8 → 2 (Full House)
  59. Row 6 / Column 8 → 7 (Full House)
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