# Solution for Hard Sudoku #127713524895

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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Locked Pair, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 5 → 2 (Hidden Single)
2. Row 2 / Column 9 → 8 (Hidden Single)
3. Row 5 / Column 3 → 7 (Hidden Single)
4. Row 9 / Column 9 → 9 (Hidden Single)
5. Row 8 / Column 1 → 8 (Hidden Single)
6. Row 7 / Column 3 → 9 (Hidden Single)
7. Row 8 / Column 3 → 3 (Hidden Single)
8. Row 9 / Column 3 → 2 (Hidden Single)
9. Locked Candidates Type 1 (Pointing): 6 in b5 => r5c12789<>6
10. Locked Candidates Type 1 (Pointing): 8 in b5 => r5c28<>8
11. Locked Candidates Type 1 (Pointing): 9 in b5 => r5c12<>9
12. Locked Candidates Type 1 (Pointing): 5 in b7 => r7c68<>5
13. Locked Candidates Type 1 (Pointing): 6 in b7 => r7c568<>6
14. Row 7 / Column 5 → 4 (Naked Single)
15. Row 7 / Column 6 → 2 (Naked Single)
16. Row 7 / Column 8 → 2 (Naked Single)
17. Locked Pair: 5,6 in r8c46 => r8c79,r9c4<>5, r8c79,r9c45<>6
18. Row 9 / Column 4 → 8 (Naked Single)
19. Row 9 / Column 5 → 8 (Naked Single)
20. Row 1 / Column 5 → 6 (Naked Single)
21. Row 9 / Column 8 → 5 (Hidden Single)
22. Row 5 / Column 6 → 8 (Hidden Single)
23. Row 5 / Column 4 → 6 (Hidden Single)
24. Row 8 / Column 4 → 5 (Naked Single)
25. Row 2 / Column 4 → 4 (Naked Single)
26. Row 3 / Column 4 → 9 (Full House)
27. Row 8 / Column 6 → 6 (Naked Single)
28. Row 2 / Column 3 → 6 (Naked Single)
29. Row 4 / Column 3 → 4 (Full House)
30. Row 1 / Column 6 → 1 (Naked Single)
31. Row 2 / Column 6 → 5 (Full House)
32. Row 5 / Column 2 → 3 (Naked Single)
33. Row 1 / Column 1 → 9 (Naked Single)
34. Row 1 / Column 7 → 4 (Full House)
35. Row 1 / Column 2 → 4 (Full House)
36. Row 3 / Column 2 → 4 (Naked Single)
37. Row 5 / Column 1 → 2 (Naked Single)
38. Row 8 / Column 7 → 1 (Naked Single)
39. Row 8 / Column 9 → 4 (Full House)
40. Row 5 / Column 7 → 1 (Naked Single)
41. Row 2 / Column 7 → 3 (Naked Single)
42. Row 2 / Column 1 → 1 (Full House)
43. Row 5 / Column 9 → 1 (Naked Single)
44. Row 5 / Column 8 → 4 (Naked Single)
45. Row 4 / Column 8 → 3 (Hidden Single)
46. Row 6 / Column 2 → 9 (Hidden Single)
47. Row 6 / Column 7 → 2 (Hidden Single)
48. Row 3 / Column 8 → 1 (Hidden Single)
49. Row 4 / Column 2 → 8 (Hidden Single)
50. Row 6 / Column 8 → 8 (Hidden Single)
51. Row 3 / Column 7 → 5 (Hidden Single)
52. Row 3 / Column 9 → 6 (Full House)
53. Row 4 / Column 9 → 5 (Naked Single)
54. Row 4 / Column 1 → 6 (Full House)
55. Row 6 / Column 9 → 5 (Full House)
56. Row 6 / Column 1 → 5 (Full House)
57. Row 7 / Column 1 → 5 (Full House)
58. Row 7 / Column 2 → 6 (Naked Single)