# Solution for Hard Sudoku #3496517284398

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

This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Turbot Fish techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 6 → 1 (Naked Single)
2. Row 2 / Column 6 → 9 (Naked Single)
3. Row 3 / Column 6 → 5 (Naked Single)
4. Row 6 / Column 6 → 7 (Naked Single)
5. Row 7 / Column 6 → 4 (Full House)
6. Row 4 / Column 5 → 4 (Hidden Single)
7. Row 8 / Column 8 → 3 (Hidden Single)
8. Row 5 / Column 5 → 9 (Hidden Single)
9. Row 6 / Column 7 → 9 (Hidden Single)
10. Row 3 / Column 1 → 9 (Hidden Single)
11. Row 7 / Column 4 → 9 (Hidden Single)
12. Row 3 / Column 3 → 7 (Hidden Single)
13. Row 8 / Column 1 → 4 (Hidden Single)
14. Row 9 / Column 9 → 4 (Hidden Single)
15. Row 1 / Column 3 → 4 (Hidden Single)
16. Row 3 / Column 8 → 4 (Hidden Single)
17. Locked Candidates Type 1 (Pointing): 2 in b3 => r78c9<>2
18. Locked Candidates Type 1 (Pointing): 3 in b4 => r2c1<>3
19. Locked Candidates Type 1 (Pointing): 1 in b9 => r7c5<>1
20. Locked Candidates Type 2 (Claiming): 6 in c7 => r7c89,r8c9<>6
21. 2-String Kite: 8 in r3c4,r6c9 (connected by r4c4,r6c5) => r3c9<>8
22. Turbot Fish: 8 r1c8 =8= r2c9 -8- r6c9 =8= r6c5 => r1c5<>8
23. XY-Wing: 6/8/2 in r1c18,r3c9 => r3c2<>2
24. XY-Wing: 1/2/8 in r49c4,r9c7 => r4c7<>8
25. Row 4 / Column 7 → 5 (Naked Single)
26. Row 5 / Column 1 → 5 (Hidden Single)
27. Row 5 / Column 2 → 7 (Hidden Single)
28. Row 7 / Column 1 → 7 (Hidden Single)
29. Row 9 / Column 5 → 7 (Hidden Single)
30. Row 6 / Column 3 → 6 (Hidden Single)
31. Row 8 / Column 9 → 7 (Hidden Single)
32. Row 9 / Column 4 → 1 (Hidden Single)
33. Row 4 / Column 4 → 8 (Naked Single)
34. Row 6 / Column 5 → 1 (Full House)
35. Row 6 / Column 1 → 3 (Naked Single)
36. Row 6 / Column 9 → 8 (Full House)
37. Row 8 / Column 5 → 5 (Hidden Single)
38. Row 7 / Column 9 → 5 (Hidden Single)
39. Row 4 / Column 9 → 3 (Hidden Single)
40. Row 1 / Column 8 → 8 (Hidden Single)
41. Row 1 / Column 1 → 2 (Naked Single)
42. Row 1 / Column 5 → 6 (Full House)
43. Row 7 / Column 8 → 1 (Naked Single)
44. Row 5 / Column 8 → 6 (Full House)
45. Row 5 / Column 9 → 1 (Full House)
46. Row 2 / Column 3 → 1 (Naked Single)
47. Row 4 / Column 3 → 2 (Full House)
48. Row 4 / Column 1 → 1 (Full House)
49. Row 2 / Column 1 → 8 (Full House)
50. Row 3 / Column 4 → 2 (Naked Single)
51. Row 8 / Column 4 → 6 (Full House)
52. Row 7 / Column 5 → 2 (Full House)
53. Row 8 / Column 7 → 2 (Full House)
54. Row 2 / Column 5 → 3 (Naked Single)
55. Row 3 / Column 5 → 8 (Full House)
56. Row 3 / Column 9 → 6 (Naked Single)
57. Row 2 / Column 9 → 2 (Full House)
58. Row 2 / Column 2 → 6 (Full House)
59. Row 3 / Column 2 → 3 (Full House)
60. Row 7 / Column 2 → 8 (Naked Single)
61. Row 7 / Column 7 → 6 (Full House)
62. Row 9 / Column 7 → 8 (Full House)
63. Row 9 / Column 2 → 2 (Full House)