Solution for Evil Sudoku #1413713524895

4
5
3
1
4
1
8
7
3
1
1
7
8
5
2
3
1
7
3
7
1
2
4
3
8
1

This Sudoku Puzzle has 57 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Triple, Full House techniques.

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Solution Steps:

  1. Row 3 / Column 9 → 4 (Hidden Single)
  2. Row 5 / Column 5 → 3 (Hidden Single)
  3. Row 3 / Column 2 → 1 (Hidden Single)
  4. Row 7 / Column 4 → 1 (Hidden Single)
  5. Row 8 / Column 8 → 3 (Hidden Single)
  6. Row 3 / Column 3 → 3 (Hidden Single)
  7. Row 2 / Column 9 → 3 (Hidden Single)
  8. Locked Pair: 6,9 in r46c6 => r1378c6,r46c4<>6, r1378c6,r46c4<>9
  9. Row 3 / Column 6 → 2 (Naked Single)
  10. Row 7 / Column 6 → 8 (Naked Single)
  11. Row 8 / Column 6 → 7 (Naked Single)
  12. Row 4 / Column 4 → 4 (Naked Single)
  13. Row 6 / Column 4 → 4 (Naked Single)
  14. Row 1 / Column 6 → 7 (Naked Single)
  15. Row 1 / Column 5 → 8 (Hidden Single)
  16. Row 9 / Column 7 → 7 (Hidden Single)
  17. Row 5 / Column 3 → 4 (Hidden Single)
  18. Row 5 / Column 1 → 7 (Hidden Single)
  19. Row 2 / Column 2 → 7 (Hidden Single)
  20. Row 9 / Column 1 → 8 (Hidden Single)
  21. Row 7 / Column 7 → 4 (Hidden Single)
  22. Row 2 / Column 3 → 8 (Hidden Single)
  23. Locked Triple: 2,6,9 in r5c789 => r4c8,r5c2<>2, r46c8,r5c2,r6c7<>6, r46c8,r5c2,r6c7<>9
  24. Row 5 / Column 2 → 9 (Naked Single)
  25. Row 6 / Column 7 → 5 (Naked Single)
  26. Row 4 / Column 8 → 8 (Naked Single)
  27. Row 6 / Column 8 → 8 (Naked Single)
  28. Row 6 / Column 2 → 6 (Naked Single)
  29. Row 6 / Column 6 → 9 (Naked Single)
  30. Row 8 / Column 2 → 5 (Naked Single)
  31. Row 4 / Column 6 → 6 (Naked Single)
  32. Row 4 / Column 2 → 2 (Naked Single)
  33. Row 4 / Column 3 → 5 (Full House)
  34. Row 9 / Column 2 → 2 (Naked Single)
  35. Row 1 / Column 3 → 2 (Hidden Single)
  36. Row 8 / Column 3 → 6 (Hidden Single)
  37. Row 8 / Column 1 → 9 (Full House)
  38. Row 8 / Column 7 → 9 (Full House)
  39. Row 1 / Column 1 → 6 (Full House)
  40. Row 3 / Column 1 → 6 (Full House)
  41. Row 7 / Column 1 → 9 (Naked Single)
  42. Row 1 / Column 9 → 9 (Hidden Single)
  43. Row 1 / Column 8 → 5 (Naked Single)
  44. Row 2 / Column 4 → 6 (Hidden Single)
  45. Row 2 / Column 7 → 2 (Full House)
  46. Row 2 / Column 8 → 2 (Full House)
  47. Row 5 / Column 7 → 6 (Naked Single)
  48. Row 5 / Column 8 → 6 (Naked Single)
  49. Row 7 / Column 8 → 6 (Naked Single)
  50. Row 5 / Column 9 → 2 (Naked Single)
  51. Row 9 / Column 9 → 5 (Full House)
  52. Row 7 / Column 9 → 5 (Full House)
  53. Row 7 / Column 5 → 5 (Naked Single)
  54. Row 9 / Column 4 → 9 (Naked Single)
  55. Row 3 / Column 5 → 9 (Naked Single)
  56. Row 3 / Column 4 → 5 (Naked Single)
  57. Row 9 / Column 5 → 6 (Naked Single)
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