Solution for Evil Sudoku #1245738219696

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

This Sudoku Puzzle has 62 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 8 → 4 (Hidden Single)
  2. Row 4 / Column 1 → 5 (Hidden Single)
  3. Row 5 / Column 2 → 9 (Hidden Single)
  4. Row 1 / Column 8 → 2 (Hidden Single)
  5. Row 6 / Column 9 → 7 (Hidden Single)
  6. Row 2 / Column 4 → 4 (Hidden Single)
  7. Row 4 / Column 7 → 1 (Hidden Single)
  8. Row 7 / Column 2 → 1 (Hidden Single)
  9. Row 3 / Column 8 → 3 (Hidden Single)
  10. Row 4 / Column 9 → 9 (Hidden Single)
  11. Row 2 / Column 8 → 5 (Hidden Single)
  12. Row 5 / Column 6 → 5 (Hidden Single)
  13. Row 3 / Column 5 → 5 (Hidden Single)
  14. Locked Pair: 6,9 in r23c1 => r1c13,r3c3,r9c1<>9, r79c1<>6
  15. Row 1 / Column 1 → 3 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 8 in b1 => r6c3<>8
  17. Locked Candidates Type 1 (Pointing): 2 in b5 => r9c4<>2
  18. Locked Candidates Type 1 (Pointing): 6 in b5 => r78c6<>6
  19. Locked Pair: 3,9 in r8c46 => r7c6,r8c239,r9c4<>3, r8c3,r9c4<>9
  20. Row 8 / Column 2 → 6 (Naked Single)
  21. Row 9 / Column 3 → 9 (Hidden Single)
  22. Row 9 / Column 9 → 5 (Hidden Single)
  23. Row 8 / Column 9 → 4 (Naked Single)
  24. Row 1 / Column 9 → 8 (Naked Single)
  25. Row 8 / Column 3 → 5 (Naked Single)
  26. Row 1 / Column 3 → 1 (Naked Single)
  27. Row 1 / Column 5 → 7 (Naked Single)
  28. Row 3 / Column 9 → 6 (Naked Single)
  29. Row 7 / Column 9 → 3 (Full House)
  30. Row 3 / Column 3 → 8 (Naked Single)
  31. Row 1 / Column 6 → 9 (Naked Single)
  32. Row 1 / Column 7 → 4 (Full House)
  33. Row 5 / Column 5 → 8 (Naked Single)
  34. Row 5 / Column 4 → 7 (Full House)
  35. Row 2 / Column 7 → 9 (Naked Single)
  36. Row 3 / Column 7 → 7 (Full House)
  37. Row 3 / Column 1 → 9 (Naked Single)
  38. Row 3 / Column 4 → 1 (Full House)
  39. Row 2 / Column 6 → 8 (Full House)
  40. Row 2 / Column 1 → 6 (Full House)
  41. Row 7 / Column 3 → 4 (Naked Single)
  42. Row 6 / Column 3 → 3 (Full House)
  43. Row 8 / Column 6 → 3 (Naked Single)
  44. Row 8 / Column 4 → 9 (Full House)
  45. Row 9 / Column 4 → 8 (Naked Single)
  46. Row 7 / Column 6 → 7 (Naked Single)
  47. Row 6 / Column 4 → 2 (Naked Single)
  48. Row 4 / Column 4 → 3 (Full House)
  49. Row 4 / Column 6 → 6 (Naked Single)
  50. Row 6 / Column 6 → 1 (Full House)
  51. Row 9 / Column 7 → 6 (Naked Single)
  52. Row 7 / Column 7 → 8 (Full House)
  53. Row 7 / Column 1 → 2 (Naked Single)
  54. Row 7 / Column 5 → 6 (Full House)
  55. Row 9 / Column 5 → 2 (Full House)
  56. Row 6 / Column 1 → 4 (Naked Single)
  57. Row 9 / Column 1 → 7 (Full House)
  58. Row 9 / Column 2 → 3 (Full House)
  59. Row 6 / Column 2 → 8 (Naked Single)
  60. Row 4 / Column 2 → 2 (Full House)
  61. Row 4 / Column 8 → 8 (Full House)
  62. Row 6 / Column 8 → 6 (Full House)
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