Solution for Evil Sudoku #1348713524895

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

This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Locked Triple, Full House techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 4 / Column 7 → 8 (Hidden Single)
  3. Row 3 / Column 7 → 4 (Hidden Single)
  4. Row 7 / Column 2 → 8 (Hidden Single)
  5. Row 8 / Column 6 → 8 (Hidden Single)
  6. Row 9 / Column 9 → 8 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 5 in b8 => r2c4<>5
  8. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c12,r3c2<>3
  9. Naked Triple: 1,6,9 in r4c46,r6c4 => r5c5,r6c6<>6, r5c5,r6c6<>9
  10. Row 5 / Column 5 → 3 (Naked Single)
  11. Row 6 / Column 6 → 3 (Naked Single)
  12. Row 2 / Column 8 → 3 (Hidden Single)
  13. Row 1 / Column 2 → 3 (Hidden Single)
  14. Row 7 / Column 1 → 3 (Hidden Single)
  15. Naked Triple: 2,6,9 in r2c45,r3c5 => r23c6<>6, r23c6<>9
  16. Row 2 / Column 6 → 5 (Naked Single)
  17. Row 3 / Column 6 → 5 (Naked Single)
  18. Row 4 / Column 6 → 6 (Hidden Single)
  19. Locked Candidates Type 1 (Pointing): 5 in b1 => r1c79<>5
  20. Locked Candidates Type 1 (Pointing): 9 in b5 => r278c4<>9
  21. Locked Candidates Type 1 (Pointing): 9 in b2 => r789c5<>9
  22. Locked Triple: 2,6,7 in r789c5 => r23c5,r78c4<>2, r23c5,r78c4<>6
  23. Row 2 / Column 5 → 9 (Naked Single)
  24. Row 3 / Column 5 → 9 (Naked Single)
  25. Row 7 / Column 4 → 5 (Naked Single)
  26. Row 8 / Column 4 → 5 (Naked Single)
  27. Row 2 / Column 4 → 2 (Hidden Single)
  28. Row 2 / Column 1 → 6 (Full House)
  29. Row 2 / Column 2 → 6 (Full House)
  30. Row 2 / Column 7 → 6 (Full House)
  31. Row 3 / Column 2 → 2 (Naked Single)
  32. Row 3 / Column 8 → 7 (Naked Single)
  33. Row 3 / Column 9 → 7 (Naked Single)
  34. Row 4 / Column 1 → 7 (Hidden Single)
  35. Row 6 / Column 2 → 9 (Naked Single)
  36. Row 4 / Column 3 → 2 (Naked Single)
  37. Row 5 / Column 1 → 5 (Naked Single)
  38. Row 5 / Column 3 → 6 (Full House)
  39. Row 5 / Column 7 → 9 (Full House)
  40. Row 6 / Column 3 → 6 (Full House)
  41. Row 5 / Column 9 → 9 (Full House)
  42. Row 6 / Column 4 → 1 (Naked Single)
  43. Row 8 / Column 2 → 7 (Naked Single)
  44. Row 1 / Column 1 → 9 (Naked Single)
  45. Row 9 / Column 1 → 2 (Full House)
  46. Row 7 / Column 3 → 9 (Naked Single)
  47. Row 8 / Column 3 → 1 (Full House)
  48. Row 9 / Column 3 → 1 (Full House)
  49. Row 1 / Column 7 → 2 (Naked Single)
  50. Row 4 / Column 8 → 1 (Naked Single)
  51. Row 4 / Column 4 → 9 (Full House)
  52. Row 6 / Column 9 → 5 (Naked Single)
  53. Row 1 / Column 9 → 2 (Naked Single)
  54. Row 6 / Column 7 → 5 (Naked Single)
  55. Row 1 / Column 3 → 5 (Naked Single)
  56. Row 9 / Column 7 → 1 (Naked Single)
  57. Row 7 / Column 8 → 6 (Naked Single)
  58. Row 7 / Column 5 → 2 (Full House)
  59. Row 8 / Column 8 → 9 (Full House)
  60. Row 9 / Column 8 → 9 (Full House)
  61. Row 8 / Column 9 → 6 (Naked Single)
  62. Row 8 / Column 5 → 6 (Naked Single)
  63. Row 9 / Column 5 → 7 (Naked Single)
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