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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 5 → 2 (Naked Single)
2. Row 4 / Column 2 → 3 (Naked Single)
3. Row 4 / Column 3 → 6 (Naked Single)
4. Row 7 / Column 2 → 4 (Naked Single)
5. Row 4 / Column 6 → 2 (Naked Single)
6. Row 7 / Column 4 → 3 (Naked Single)
7. Row 7 / Column 8 → 6 (Naked Single)
8. Row 7 / Column 1 → 9 (Full House)
9. Row 2 / Column 1 → 3 (Hidden Single)
10. Row 9 / Column 3 → 3 (Hidden Single)
11. Row 9 / Column 1 → 6 (Hidden Single)
12. Row 3 / Column 3 → 9 (Hidden Single)
13. Locked Candidates Type 1 (Pointing): 2 in b7 => r8c79<>2
14. Locked Candidates Type 1 (Pointing): 8 in b7 => r8c4<>8
15. X-Wing: 5 r14 c47 => r5c47,r6c4,r8c7<>5
16. Row 8 / Column 7 → 7 (Naked Single)
17. Row 8 / Column 4 → 4 (Naked Single)
18. Row 8 / Column 9 → 5 (Naked Single)
19. Row 3 / Column 9 → 2 (Naked Single)
20. 2-String Kite: 7 in r3c5,r5c2 (connected by r2c2,r3c1) => r5c5<>7
21. XY-Wing: 7/8/5 in r3c18,r6c1 => r6c8<>5
22. Row 6 / Column 8 → 1 (Naked Single)
23. Row 6 / Column 1 → 5 (Hidden Single)
24. Locked Candidates Type 1 (Pointing): 7 in b4 => r5c46<>7
25. XY-Wing: 5/9/2 in r49c7,r5c8 => r5c7,r9c8<>2
26. Row 9 / Column 8 → 4 (Naked Single)
27. Row 2 / Column 8 → 8 (Naked Single)
28. Row 9 / Column 9 → 9 (Naked Single)
29. Row 9 / Column 7 → 2 (Full House)
30. Row 3 / Column 8 → 5 (Naked Single)
31. Row 5 / Column 8 → 2 (Full House)
32. Row 3 / Column 5 → 7 (Naked Single)
33. Row 3 / Column 1 → 8 (Full House)
34. Row 2 / Column 5 → 9 (Naked Single)
35. Row 2 / Column 6 → 6 (Naked Single)
36. Row 9 / Column 5 → 1 (Naked Single)
37. Row 5 / Column 5 → 5 (Full House)
38. Row 8 / Column 1 → 2 (Naked Single)
39. Row 1 / Column 6 → 8 (Naked Single)
40. Row 2 / Column 4 → 2 (Naked Single)
41. Row 1 / Column 4 → 5 (Full House)
42. Row 2 / Column 7 → 1 (Naked Single)
43. Row 2 / Column 9 → 4 (Naked Single)
44. Row 1 / Column 7 → 6 (Full House)
45. Row 2 / Column 2 → 7 (Full House)
46. Row 4 / Column 4 → 9 (Naked Single)
47. Row 4 / Column 7 → 5 (Full House)
48. Row 5 / Column 7 → 9 (Full House)
49. Row 1 / Column 1 → 4 (Naked Single)
50. Row 5 / Column 1 → 7 (Full House)
51. Row 9 / Column 6 → 7 (Naked Single)
52. Row 9 / Column 4 → 8 (Full House)
53. Row 5 / Column 2 → 8 (Naked Single)
54. Row 5 / Column 3 → 4 (Full House)
55. Row 5 / Column 4 → 6 (Naked Single)
56. Row 6 / Column 4 → 7 (Full House)
57. Row 1 / Column 3 → 1 (Naked Single)
58. Row 1 / Column 2 → 2 (Full House)
59. Row 8 / Column 2 → 1 (Full House)
60. Row 8 / Column 3 → 8 (Full House)
61. Row 6 / Column 6 → 3 (Naked Single)
62. Row 5 / Column 6 → 1 (Full House)
63. Row 5 / Column 9 → 3 (Full House)
64. Row 6 / Column 9 → 6 (Full House)