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

This Sudoku Puzzle has 68 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 5 / Column 7 → 9 (Hidden Single)
2. Row 7 / Column 5 → 9 (Hidden Single)
3. Row 5 / Column 5 → 8 (Hidden Single)
4. Row 8 / Column 8 → 8 (Hidden Single)
5. Row 2 / Column 4 → 2 (Hidden Single)
6. Row 9 / Column 5 → 2 (Hidden Single)
7. Row 5 / Column 9 → 4 (Hidden Single)
8. Row 7 / Column 2 → 8 (Hidden Single)
9. Row 4 / Column 4 → 9 (Hidden Single)
10. Row 6 / Column 5 → 4 (Hidden Single)
11. Row 9 / Column 9 → 3 (Hidden Single)
12. Row 6 / Column 7 → 3 (Hidden Single)
13. Row 6 / Column 4 → 1 (Hidden Single)
14. Row 4 / Column 5 → 3 (Hidden Single)
15. Row 6 / Column 6 → 6 (Hidden Single)
16. Row 5 / Column 4 → 7 (Naked Single)
17. Row 4 / Column 6 → 5 (Full House)
18. Row 8 / Column 4 → 6 (Full House)
19. Row 5 / Column 1 → 3 (Hidden Single)
20. Row 5 / Column 2 → 5 (Naked Single)
21. Row 5 / Column 3 → 6 (Full House)
22. Row 9 / Column 1 → 6 (Hidden Single)
23. Locked Candidates Type 1 (Pointing): 2 in b4 => r3c2<>2
24. Locked Candidates Type 1 (Pointing): 7 in b6 => r29c8<>7
25. Locked Candidates Type 1 (Pointing): 5 in b7 => r123c3<>5
26. Locked Candidates Type 1 (Pointing): 7 in b8 => r123c6<>7
27. Naked Triple: 1,2,7 in r346c2 => r2c2<>1, r28c2<>7
28. X-Wing: 4 r17 c17 => r289c7<>4
29. Naked Triple: 1,5,7 in r289c7 => r137c7<>1, r13c7<>5, r137c7<>7
30. Locked Candidates Type 1 (Pointing): 5 in b3 => r2c5<>5
31. XY-Wing: 5/7/4 in r8c67,r9c8 => r9c6<>4
32. Row 9 / Column 6 → 7 (Naked Single)
33. Row 8 / Column 6 → 4 (Full House)
34. Row 8 / Column 2 → 3 (Naked Single)
35. Row 2 / Column 2 → 4 (Naked Single)
36. Row 2 / Column 8 → 5 (Naked Single)
37. Row 9 / Column 8 → 4 (Naked Single)
38. Row 7 / Column 7 → 2 (Naked Single)
39. Row 3 / Column 7 → 8 (Naked Single)
40. Row 1 / Column 7 → 4 (Naked Single)
41. Row 7 / Column 1 → 4 (Hidden Single)
42. Row 2 / Column 3 → 3 (Hidden Single)
43. Row 1 / Column 6 → 8 (Hidden Single)
44. Row 2 / Column 6 → 9 (Hidden Single)
45. Row 3 / Column 6 → 1 (Full House)
46. Row 3 / Column 2 → 7 (Naked Single)
47. Row 3 / Column 1 → 5 (Naked Single)
48. Row 6 / Column 2 → 2 (Naked Single)
49. Row 4 / Column 2 → 1 (Full House)
50. Row 6 / Column 8 → 7 (Full House)
51. Row 4 / Column 1 → 7 (Full House)
52. Row 1 / Column 1 → 1 (Full House)
53. Row 4 / Column 8 → 2 (Full House)
54. Row 3 / Column 5 → 6 (Naked Single)
55. Row 1 / Column 3 → 2 (Naked Single)
56. Row 3 / Column 3 → 9 (Full House)
57. Row 3 / Column 9 → 2 (Full House)
58. Row 2 / Column 5 → 7 (Naked Single)
59. Row 1 / Column 5 → 5 (Full House)
60. Row 1 / Column 9 → 7 (Full House)
61. Row 2 / Column 7 → 1 (Naked Single)
62. Row 2 / Column 9 → 6 (Full House)
63. Row 7 / Column 9 → 1 (Full House)
64. Row 7 / Column 3 → 7 (Full House)
65. Row 9 / Column 7 → 5 (Naked Single)
66. Row 8 / Column 7 → 7 (Full House)
67. Row 8 / Column 3 → 5 (Full House)
68. Row 9 / Column 3 → 1 (Full House)