Solution for Medium Sudoku #12871925643103

8
7
3
2
5
6
4
9
1
4
1
2
8
7
9
3
6
5
9
5
6
1
3
4
2
8
7
5
4
2
3
1
9
6
8
7
1
9
7
5
8
6
2
3
4
3
6
8
4
7
2
5
1
9
7
6
4
9
3
8
1
2
5
9
5
3
7
2
1
6
4
8
8
2
1
6
4
5
7
9
3

This Sudoku Puzzle has 66 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Full House techniques.

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

Solution Steps:

  1. Row 5 / Column 9 → 2 (Hidden Single)
  2. Row 4 / Column 3 → 2 (Hidden Single)
  3. Row 8 / Column 5 → 2 (Hidden Single)
  4. Row 5 / Column 6 → 6 (Hidden Single)
  5. Row 7 / Column 4 → 9 (Hidden Single)
  6. Row 3 / Column 7 → 2 (Hidden Single)
  7. Row 4 / Column 2 → 4 (Hidden Single)
  8. Row 3 / Column 6 → 5 (Hidden Single)
  9. Row 5 / Column 4 → 5 (Hidden Single)
  10. Row 7 / Column 6 → 3 (Hidden Single)
  11. Row 9 / Column 5 → 4 (Hidden Single)
  12. Row 7 / Column 3 → 4 (Hidden Single)
  13. Row 8 / Column 8 → 4 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 3 in b1 => r6c3<>3
  15. Locked Candidates Type 1 (Pointing): 3 in b5 => r1c5<>3
  16. Locked Candidates Type 1 (Pointing): 8 in b5 => r2c5<>8
  17. Locked Candidates Type 1 (Pointing): 6 in b9 => r1246c7<>6
  18. Locked Candidates Type 1 (Pointing): 6 in b3 => r46c9<>6
  19. Naked Triple: 1,7,8 in r2c7,r3c89 => r1c7<>1, r1c79,r2c9<>7, r2c9<>8
  20. Row 1 / Column 7 → 9 (Naked Single)
  21. Row 8 / Column 1 → 9 (Hidden Single)
  22. Row 9 / Column 8 → 9 (Hidden Single)
  23. Locked Candidates Type 1 (Pointing): 7 in b9 => r26c7<>7
  24. Locked Candidates Type 1 (Pointing): 7 in b3 => r3c3<>7
  25. Locked Candidates Type 1 (Pointing): 8 in b9 => r246c7<>8
  26. Row 2 / Column 7 → 1 (Naked Single)
  27. Row 2 / Column 5 → 7 (Naked Single)
  28. Row 1 / Column 5 → 1 (Naked Single)
  29. Row 2 / Column 4 → 8 (Hidden Single)
  30. Row 3 / Column 4 → 3 (Naked Single)
  31. Row 1 / Column 4 → 4 (Full House)
  32. Row 3 / Column 3 → 1 (Naked Single)
  33. Row 1 / Column 9 → 6 (Naked Single)
  34. Row 1 / Column 2 → 7 (Naked Single)
  35. Row 1 / Column 3 → 3 (Full House)
  36. Row 2 / Column 9 → 4 (Naked Single)
  37. Row 8 / Column 6 → 1 (Hidden Single)
  38. Row 9 / Column 6 → 8 (Full House)
  39. Row 9 / Column 7 → 7 (Naked Single)
  40. Row 9 / Column 3 → 5 (Naked Single)
  41. Row 9 / Column 1 → 1 (Full House)
  42. Row 2 / Column 3 → 6 (Naked Single)
  43. Row 2 / Column 2 → 5 (Full House)
  44. Row 8 / Column 3 → 8 (Naked Single)
  45. Row 6 / Column 3 → 7 (Full House)
  46. Row 8 / Column 7 → 6 (Full House)
  47. Row 7 / Column 7 → 8 (Full House)
  48. Row 7 / Column 2 → 6 (Naked Single)
  49. Row 7 / Column 1 → 7 (Full House)
  50. Row 5 / Column 1 → 3 (Naked Single)
  51. Row 5 / Column 5 → 8 (Naked Single)
  52. Row 5 / Column 2 → 1 (Naked Single)
  53. Row 5 / Column 8 → 7 (Full House)
  54. Row 6 / Column 2 → 8 (Full House)
  55. Row 3 / Column 8 → 8 (Naked Single)
  56. Row 3 / Column 9 → 7 (Full House)
  57. Row 6 / Column 9 → 9 (Naked Single)
  58. Row 4 / Column 9 → 8 (Full House)
  59. Row 4 / Column 8 → 6 (Naked Single)
  60. Row 6 / Column 8 → 1 (Full House)
  61. Row 6 / Column 5 → 3 (Naked Single)
  62. Row 4 / Column 5 → 9 (Full House)
  63. Row 4 / Column 1 → 5 (Naked Single)
  64. Row 4 / Column 7 → 3 (Full House)
  65. Row 6 / Column 7 → 5 (Full House)
  66. Row 6 / Column 1 → 6 (Full House)
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