# Solution for Medium Sudoku #12871925643103

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

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## 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)