Solution for Evil Sudoku #1317713524895

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

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

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 7 → 1 (Hidden Single)
  2. Row 4 / Column 8 → 7 (Hidden Single)
  3. Row 8 / Column 3 → 1 (Hidden Single)
  4. Row 1 / Column 3 → 4 (Hidden Single)
  5. Row 9 / Column 5 → 7 (Hidden Single)
  6. Row 8 / Column 2 → 7 (Hidden Single)
  7. Row 7 / Column 2 → 8 (Hidden Single)
  8. Locked Pair: 6,9 in r4c46 => r4c137,r5c5,r6c46<>6, r4c137,r5c5,r6c46<>9
  9. Row 4 / Column 3 → 2 (Naked Single)
  10. Row 4 / Column 7 → 8 (Naked Single)
  11. Row 5 / Column 5 → 3 (Naked Single)
  12. Row 6 / Column 4 → 4 (Naked Single)
  13. Row 4 / Column 1 → 8 (Naked Single)
  14. Row 6 / Column 6 → 4 (Naked Single)
  15. Row 9 / Column 9 → 8 (Hidden Single)
  16. Row 7 / Column 5 → 4 (Hidden Single)
  17. Row 9 / Column 7 → 4 (Hidden Single)
  18. Row 3 / Column 9 → 4 (Hidden Single)
  19. Row 9 / Column 1 → 2 (Hidden Single)
  20. Row 8 / Column 9 → 2 (Hidden Single)
  21. Row 7 / Column 4 → 2 (Hidden Single)
  22. Row 7 / Column 8 → 5 (Hidden Single)
  23. Locked Triple: 2,6,9 in r123c5 => r2c46,r3c6,r8c5<>6, r2c46,r3c6,r8c5<>9
  24. Row 8 / Column 5 → 9 (Naked Single)
  25. Row 8 / Column 8 → 6 (Naked Single)
  26. Row 9 / Column 8 → 9 (Full House)
  27. Row 2 / Column 8 → 3 (Full House)
  28. Row 3 / Column 8 → 3 (Full House)
  29. Row 9 / Column 3 → 6 (Full House)
  30. Row 3 / Column 6 → 5 (Naked Single)
  31. Row 2 / Column 4 → 8 (Naked Single)
  32. Row 2 / Column 6 → 8 (Naked Single)
  33. Row 8 / Column 6 → 8 (Naked Single)
  34. Row 8 / Column 4 → 5 (Naked Single)
  35. Row 4 / Column 4 → 9 (Hidden Single)
  36. Row 4 / Column 6 → 6 (Naked Single)
  37. Locked Candidates Type 1 (Pointing): 5 in b1 => r5c1<>5
  38. Naked Pair: 2,6 in r12c5 => r3c5<>2, r3c5<>6
  39. Row 3 / Column 5 → 6 (Naked Single)
  40. Row 1 / Column 5 → 2 (Naked Single)
  41. Row 2 / Column 5 → 2 (Naked Single)
  42. Row 3 / Column 2 → 2 (Hidden Single)
  43. Row 3 / Column 7 → 9 (Naked Single)
  44. Locked Pair: 5,6 in r1c79 => r1c1,r2c7<>5, r1c12,r2c7<>6
  45. Row 2 / Column 7 → 6 (Naked Single)
  46. Row 1 / Column 7 → 5 (Naked Single)
  47. Row 1 / Column 9 → 5 (Naked Single)
  48. Row 2 / Column 2 → 9 (Naked Single)
  49. Row 5 / Column 7 → 5 (Naked Single)
  50. Row 1 / Column 1 → 3 (Naked Single)
  51. Row 1 / Column 2 → 3 (Naked Single)
  52. Row 2 / Column 1 → 5 (Naked Single)
  53. Row 5 / Column 3 → 9 (Naked Single)
  54. Row 7 / Column 1 → 9 (Naked Single)
  55. Row 7 / Column 3 → 3 (Full House)
  56. Row 6 / Column 3 → 5 (Full House)
  57. Row 6 / Column 2 → 6 (Naked Single)
  58. Row 5 / Column 1 → 6 (Naked Single)
  59. Row 5 / Column 9 → 6 (Naked Single)
  60. Row 6 / Column 9 → 9 (Naked Single)
Show More...