Solution for Evil Sudoku #1322713524895

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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, Naked Single, Locked Triple, Full House techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 2 / Column 2 → 2 (Hidden Single)
  3. Row 1 / Column 3 → 4 (Hidden Single)
  4. Row 8 / Column 3 → 2 (Hidden Single)
  5. Row 8 / Column 8 → 1 (Hidden Single)
  6. Row 9 / Column 3 → 1 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 5 in b1 => r5c1<>5
  8. Locked Candidates Type 1 (Pointing): 8 in b4 => r79c1<>8
  9. Locked Candidates Type 1 (Pointing): 4 in b9 => r9c5<>4
  10. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c1,r3c2<>3
  11. Locked Candidates Type 2 (Claiming): 8 in r9 => r8c9<>8
  12. Naked Pair: 6,9 in r4c36 => r4c1478<>6, r4c1478<>9
  13. Row 4 / Column 4 → 1 (Naked Single)
  14. Row 4 / Column 8 → 7 (Naked Single)
  15. Row 4 / Column 7 → 8 (Naked Single)
  16. Row 4 / Column 1 → 8 (Naked Single)
  17. Row 6 / Column 7 → 1 (Hidden Single)
  18. Row 3 / Column 9 → 7 (Hidden Single)
  19. Row 9 / Column 1 → 7 (Hidden Single)
  20. Row 6 / Column 2 → 7 (Hidden Single)
  21. Row 9 / Column 9 → 8 (Hidden Single)
  22. Row 8 / Column 5 → 7 (Hidden Single)
  23. Row 9 / Column 7 → 4 (Hidden Single)
  24. Locked Triple: 5,6,9 in r123c7 => r1c9,r23c8,r5c7<>5, r1c9,r23c8,r5c7<>6, r1c9,r23c8,r5c7<>9
  25. Row 5 / Column 7 → 9 (Naked Single)
  26. Row 1 / Column 9 → 9 (Naked Single)
  27. Row 2 / Column 8 → 3 (Naked Single)
  28. Row 3 / Column 8 → 3 (Naked Single)
  29. Row 7 / Column 8 → 5 (Hidden Single)
  30. Row 8 / Column 9 → 6 (Naked Single)
  31. Row 9 / Column 8 → 9 (Full House)
  32. Row 9 / Column 5 → 6 (Full House)
  33. Row 5 / Column 9 → 5 (Naked Single)
  34. Row 6 / Column 9 → 5 (Naked Single)
  35. Row 5 / Column 5 → 3 (Naked Single)
  36. Row 5 / Column 1 → 6 (Naked Single)
  37. Row 5 / Column 3 → 6 (Naked Single)
  38. Row 4 / Column 3 → 9 (Naked Single)
  39. Row 4 / Column 6 → 6 (Naked Single)
  40. Row 6 / Column 3 → 3 (Naked Single)
  41. Row 7 / Column 3 → 3 (Naked Single)
  42. Row 7 / Column 1 → 9 (Naked Single)
  43. Row 2 / Column 1 → 5 (Naked Single)
  44. Row 7 / Column 5 → 4 (Naked Single)
  45. Row 2 / Column 5 → 9 (Full House)
  46. Row 3 / Column 5 → 9 (Full House)
  47. Row 8 / Column 2 → 8 (Naked Single)
  48. Row 1 / Column 1 → 3 (Naked Single)
  49. Row 3 / Column 2 → 6 (Full House)
  50. Row 7 / Column 2 → 6 (Full House)
  51. Row 1 / Column 2 → 6 (Full House)
  52. Row 2 / Column 7 → 6 (Naked Single)
  53. Row 7 / Column 4 → 8 (Naked Single)
  54. Row 3 / Column 7 → 5 (Naked Single)
  55. Row 1 / Column 7 → 5 (Naked Single)
  56. Row 2 / Column 4 → 4 (Naked Single)
  57. Row 2 / Column 6 → 8 (Full House)
  58. Row 3 / Column 6 → 4 (Naked Single)
  59. Row 6 / Column 4 → 9 (Full House)
  60. Row 6 / Column 6 → 9 (Full House)
  61. Row 8 / Column 4 → 5 (Full House)
  62. Row 8 / Column 6 → 5 (Full House)
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