Solution for Evil Sudoku #1346713524895

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

This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Full House, Locked Candidates Type 2 (Claiming) techniques.

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Solution Steps:

  1. Row 1 / Column 5 → 1 (Hidden Single)
  2. Row 3 / Column 7 → 4 (Hidden Single)
  3. Locked Pair: 1,9 in r46c4 => r278c4,r46c6,r5c5<>9
  4. Row 4 / Column 6 → 6 (Naked Single)
  5. Row 6 / Column 6 → 3 (Naked Single)
  6. Row 5 / Column 5 → 3 (Naked Single)
  7. Locked Pair: 2,9 in r23c5 => r2c4,r789c5<>2, r23c6,r789c5<>9
  8. Row 7 / Column 5 → 6 (Naked Single)
  9. Row 3 / Column 6 → 5 (Naked Single)
  10. Row 8 / Column 5 → 7 (Naked Single)
  11. Row 9 / Column 5 → 7 (Naked Single)
  12. Row 2 / Column 4 → 8 (Naked Single)
  13. Row 2 / Column 6 → 8 (Naked Single)
  14. Row 8 / Column 6 → 9 (Naked Single)
  15. Row 6 / Column 2 → 7 (Hidden Single)
  16. Row 4 / Column 8 → 7 (Hidden Single)
  17. Row 3 / Column 9 → 7 (Hidden Single)
  18. Locked Pair: 5,9 in r56c3 => r1c3,r5c1<>5, r1479c3,r45c1<>9
  19. Row 4 / Column 3 → 2 (Naked Single)
  20. Row 5 / Column 1 → 8 (Naked Single)
  21. Row 4 / Column 1 → 8 (Naked Single)
  22. Row 7 / Column 3 → 3 (Naked Single)
  23. Row 1 / Column 3 → 6 (Naked Single)
  24. Row 8 / Column 3 → 1 (Naked Single)
  25. Row 9 / Column 3 → 1 (Naked Single)
  26. Row 7 / Column 2 → 8 (Hidden Single)
  27. Row 9 / Column 7 → 8 (Hidden Single)
  28. Row 8 / Column 2 → 6 (Hidden Single)
  29. Row 8 / Column 8 → 5 (Naked Single)
  30. Row 8 / Column 4 → 2 (Full House)
  31. Row 8 / Column 9 → 2 (Full House)
  32. Row 7 / Column 8 → 9 (Naked Single)
  33. Row 7 / Column 4 → 5 (Naked Single)
  34. Row 7 / Column 1 → 2 (Full House)
  35. Row 3 / Column 8 → 3 (Naked Single)
  36. Row 9 / Column 8 → 6 (Full House)
  37. Row 2 / Column 8 → 6 (Full House)
  38. Row 9 / Column 9 → 6 (Naked Single)
  39. Row 9 / Column 1 → 9 (Naked Single)
  40. Row 5 / Column 7 → 6 (Hidden Single)
  41. Locked Pair: 5,9 in r56c9 => r1c9,r6c7<>5, r1c9,r46c7<>9
  42. Row 1 / Column 9 → 9 (Naked Single)
  43. Row 4 / Column 7 → 1 (Naked Single)
  44. Row 6 / Column 7 → 1 (Naked Single)
  45. Row 4 / Column 4 → 9 (Full House)
  46. Row 6 / Column 4 → 9 (Full House)
  47. Row 5 / Column 9 → 5 (Naked Single)
  48. Row 6 / Column 9 → 5 (Naked Single)
  49. Row 6 / Column 3 → 5 (Naked Single)
  50. Row 5 / Column 3 → 9 (Naked Single)
  51. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c12<>3
  52. Row 2 / Column 1 → 5 (Naked Single)
  53. Row 1 / Column 1 → 3 (Naked Single)
  54. Row 2 / Column 7 → 2 (Naked Single)
  55. Row 1 / Column 2 → 2 (Naked Single)
  56. Row 2 / Column 2 → 9 (Full House)
  57. Row 3 / Column 2 → 9 (Full House)
  58. Row 1 / Column 7 → 5 (Naked Single)
  59. Row 2 / Column 5 → 9 (Naked Single)
  60. Row 3 / Column 5 → 2 (Naked Single)
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