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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Swordfish, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 7 → 2 (Naked Single)
2. Row 4 / Column 4 → 5 (Hidden Single)
3. Row 2 / Column 1 → 7 (Hidden Single)
4. Row 4 / Column 5 → 2 (Hidden Single)
5. Row 9 / Column 5 → 6 (Naked Single)
6. Row 9 / Column 4 → 2 (Naked Single)
7. Row 4 / Column 8 → 9 (Hidden Single)
8. Row 6 / Column 5 → 9 (Hidden Single)
9. Locked Candidates Type 1 (Pointing): 2 in b3 => r78c8<>2
10. Locked Candidates Type 1 (Pointing): 3 in b5 => r5c28<>3
11. Locked Candidates Type 1 (Pointing): 6 in b5 => r5c28<>6
12. Locked Candidates Type 1 (Pointing): 7 in b5 => r5c8<>7
13. Naked Pair: 1,8 in r4c7,r5c8 => r4c9<>1, r4c9<>8
14. Naked Pair: 3,6 in r4c19 => r4c3<>3, r4c3<>6
15. Naked Triple: 3,4,6 in r146c1 => r7c1<>3, r8c1<>4, r8c1<>6
16. Swordfish: 1 r135 c248 => r2c48,r7c48,r8c8<>1
17. Row 8 / Column 5 → 1 (Hidden Single)
18. Row 2 / Column 5 → 3 (Naked Single)
19. Row 5 / Column 5 → 7 (Full House)
20. Row 5 / Column 4 → 6 (Naked Single)
21. Row 5 / Column 6 → 3 (Full House)
22. Row 7 / Column 9 → 1 (Hidden Single)
23. Row 7 / Column 1 → 2 (Hidden Single)
24. Row 8 / Column 1 → 5 (Naked Single)
25. Row 8 / Column 7 → 8 (Naked Single)
26. Row 4 / Column 7 → 1 (Naked Single)
27. Row 2 / Column 7 → 5 (Full House)
28. Row 9 / Column 9 → 3 (Naked Single)
29. Row 4 / Column 3 → 8 (Naked Single)
30. Row 5 / Column 8 → 8 (Naked Single)
31. Row 5 / Column 2 → 1 (Full House)
32. Row 4 / Column 9 → 6 (Naked Single)
33. Row 4 / Column 1 → 3 (Full House)
34. Row 7 / Column 3 → 3 (Naked Single)
35. Row 2 / Column 8 → 6 (Naked Single)
36. Row 3 / Column 2 → 6 (Naked Single)
37. Row 2 / Column 9 → 8 (Naked Single)
38. Row 6 / Column 9 → 7 (Naked Single)
39. Row 6 / Column 8 → 3 (Full House)
40. Row 8 / Column 9 → 2 (Full House)
41. Row 2 / Column 6 → 9 (Naked Single)
42. Row 1 / Column 1 → 4 (Naked Single)
43. Row 6 / Column 1 → 6 (Full House)
44. Row 6 / Column 3 → 4 (Full House)
45. Row 2 / Column 4 → 4 (Naked Single)
46. Row 2 / Column 3 → 1 (Full House)
47. Row 1 / Column 2 → 3 (Full House)
48. Row 8 / Column 3 → 6 (Full House)
49. Row 8 / Column 6 → 7 (Naked Single)
50. Row 1 / Column 4 → 1 (Naked Single)
51. Row 3 / Column 6 → 2 (Naked Single)
52. Row 7 / Column 4 → 9 (Naked Single)
53. Row 3 / Column 4 → 7 (Full House)
54. Row 1 / Column 6 → 6 (Full House)
55. Row 1 / Column 8 → 2 (Full House)
56. Row 3 / Column 8 → 1 (Full House)
57. Row 8 / Column 8 → 4 (Naked Single)
58. Row 8 / Column 2 → 9 (Full House)
59. Row 7 / Column 2 → 8 (Naked Single)
60. Row 9 / Column 2 → 4 (Full House)
61. Row 9 / Column 8 → 5 (Naked Single)
62. Row 7 / Column 8 → 7 (Full House)
63. Row 7 / Column 6 → 5 (Full House)
64. Row 9 / Column 6 → 8 (Full House)