Solution for Evil Sudoku #2214265983743

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

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

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Solution Steps:

  1. Row 6 / Column 7 → 8 (Naked Single)
  2. Row 6 / Column 8 → 5 (Naked Single)
  3. Row 1 / Column 6 → 6 (Hidden Single)
  4. Row 4 / Column 3 → 1 (Hidden Single)
  5. Row 4 / Column 4 → 4 (Naked Single)
  6. Row 5 / Column 4 → 5 (Naked Single)
  7. Row 3 / Column 4 → 1 (Naked Single)
  8. Row 9 / Column 4 → 6 (Full House)
  9. Row 6 / Column 2 → 6 (Hidden Single)
  10. Row 4 / Column 5 → 7 (Hidden Single)
  11. Row 4 / Column 8 → 9 (Naked Single)
  12. Row 4 / Column 2 → 2 (Full House)
  13. Row 8 / Column 2 → 5 (Hidden Single)
  14. Row 8 / Column 5 → 8 (Hidden Single)
  15. Row 3 / Column 5 → 5 (Hidden Single)
  16. Row 7 / Column 9 → 5 (Hidden Single)
  17. Row 7 / Column 3 → 6 (Hidden Single)
  18. Row 5 / Column 6 → 2 (Hidden Single)
  19. Row 2 / Column 1 → 6 (Hidden Single)
  20. Row 7 / Column 7 → 9 (Hidden Single)
  21. Row 2 / Column 9 → 8 (Hidden Single)
  22. Row 3 / Column 1 → 8 (Hidden Single)
  23. Row 2 / Column 8 → 1 (Hidden Single)
  24. Locked Candidates Type 1 (Pointing): 2 in b7 => r1c1<>2
  25. X-Wing: 4 c27 r39 => r39c9,r9c15<>4
  26. Row 7 / Column 5 → 4 (Hidden Single)
  27. X-Wing: 7 c27 r29 => r9c9<>7
  28. Naked Pair: 1,3 in r9c59 => r9c1<>1, r9c12<>3
  29. Row 9 / Column 1 → 2 (Naked Single)
  30. Row 7 / Column 8 → 2 (Hidden Single)
  31. Empty Rectangle: 3 in b7 (r18c8) => r1c1<>3
  32. XY-Wing: 7/9/4 in r1c1,r29c2 => r3c2,r8c1<>4
  33. Row 3 / Column 7 → 4 (Hidden Single)
  34. Row 9 / Column 7 → 7 (Naked Single)
  35. Row 2 / Column 7 → 2 (Full House)
  36. Row 9 / Column 2 → 4 (Naked Single)
  37. Row 2 / Column 5 → 9 (Naked Single)
  38. Row 1 / Column 5 → 2 (Full House)
  39. Row 2 / Column 2 → 7 (Full House)
  40. Row 1 / Column 3 → 3 (Naked Single)
  41. Row 1 / Column 8 → 7 (Naked Single)
  42. Row 3 / Column 2 → 9 (Naked Single)
  43. Row 5 / Column 2 → 3 (Full House)
  44. Row 5 / Column 1 → 9 (Full House)
  45. Row 3 / Column 3 → 2 (Naked Single)
  46. Row 8 / Column 3 → 7 (Full House)
  47. Row 1 / Column 1 → 4 (Full House)
  48. Row 1 / Column 9 → 9 (Full House)
  49. Row 3 / Column 9 → 3 (Full House)
  50. Row 5 / Column 8 → 4 (Naked Single)
  51. Row 5 / Column 9 → 7 (Full House)
  52. Row 8 / Column 8 → 3 (Full House)
  53. Row 9 / Column 9 → 1 (Naked Single)
  54. Row 8 / Column 9 → 4 (Full House)
  55. Row 8 / Column 1 → 1 (Full House)
  56. Row 9 / Column 5 → 3 (Full House)
  57. Row 7 / Column 1 → 3 (Full House)
  58. Row 6 / Column 5 → 1 (Full House)
  59. Row 7 / Column 6 → 1 (Full House)
  60. Row 6 / Column 6 → 3 (Full House)
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