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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 1 → 4 (Hidden Single)
2. Row 5 / Column 4 → 4 (Hidden Single)
3. Row 5 / Column 2 → 6 (Hidden Single)
4. Row 3 / Column 6 → 6 (Hidden Single)
5. Row 3 / Column 7 → 8 (Naked Single)
6. Row 8 / Column 5 → 4 (Hidden Single)
7. Row 9 / Column 3 → 4 (Hidden Single)
8. Row 7 / Column 9 → 4 (Hidden Single)
9. Row 7 / Column 6 → 1 (Hidden Single)
10. Row 7 / Column 4 → 9 (Hidden Single)
11. Locked Pair: 2,7 in r8c79 => r8c12<>2, r79c8,r8c12<>7
12. Row 7 / Column 2 → 7 (Hidden Single)
13. Locked Candidates Type 1 (Pointing): 7 in b2 => r1c89<>7
14. Row 6 / Column 8 → 7 (Hidden Single)
15. Row 6 / Column 7 → 2 (Naked Single)
16. Row 8 / Column 7 → 7 (Naked Single)
17. Row 8 / Column 9 → 2 (Naked Single)
18. Row 4 / Column 1 → 7 (Hidden Single)
19. Row 2 / Column 9 → 7 (Hidden Single)
20. Row 2 / Column 7 → 6 (Hidden Single)
21. Row 4 / Column 7 → 5 (Full House)
22. Row 4 / Column 9 → 6 (Hidden Single)
23. Row 5 / Column 1 → 5 (Hidden Single)
24. Row 1 / Column 9 → 5 (Hidden Single)
25. Row 2 / Column 3 → 5 (Hidden Single)
26. Row 7 / Column 3 → 8 (Naked Single)
27. Row 7 / Column 8 → 5 (Full House)
28. Row 9 / Column 8 → 8 (Full House)
29. Row 9 / Column 2 → 5 (Hidden Single)
30. Row 9 / Column 1 → 2 (Hidden Single)
31. Locked Candidates Type 1 (Pointing): 9 in b2 => r1c8<>9
32. X-Wing: 8 r26 c15 => r1c15,r4c5<>8
33. Naked Pair: 1,3 in r1c18 => r1c2<>1, r1c2456<>3
34. Row 1 / Column 5 → 9 (Naked Single)
35. 2-String Kite: 3 in r1c1,r6c9 (connected by r1c8,r3c9) => r6c1<>3
36. Turbot Fish: 3 r2c5 =3= r3c4 -3- r3c9 =3= r6c9 => r6c5<>3
37. XY-Wing: 2/3/7 in r1c6,r39c4 => r1c4,r9c6<>7
38. Row 9 / Column 6 → 3 (Naked Single)
39. Row 9 / Column 4 → 7 (Full House)
40. Row 5 / Column 6 → 9 (Naked Single)
41. Row 5 / Column 8 → 3 (Full House)
42. Row 6 / Column 9 → 9 (Full House)
43. Row 3 / Column 9 → 3 (Full House)
44. Row 4 / Column 6 → 2 (Naked Single)
45. Row 1 / Column 6 → 7 (Full House)
46. Row 1 / Column 8 → 1 (Naked Single)
47. Row 3 / Column 8 → 9 (Full House)
48. Row 3 / Column 4 → 2 (Naked Single)
49. Row 3 / Column 2 → 1 (Full House)
50. Row 1 / Column 1 → 3 (Naked Single)
51. Row 1 / Column 4 → 8 (Naked Single)
52. Row 1 / Column 2 → 2 (Full House)
53. Row 2 / Column 1 → 8 (Full House)
54. Row 2 / Column 5 → 3 (Full House)
55. Row 4 / Column 4 → 3 (Full House)
56. Row 8 / Column 2 → 3 (Naked Single)
57. Row 4 / Column 2 → 8 (Full House)
58. Row 6 / Column 1 → 1 (Naked Single)
59. Row 8 / Column 1 → 9 (Full House)
60. Row 8 / Column 3 → 1 (Full House)
61. Row 4 / Column 5 → 1 (Naked Single)
62. Row 4 / Column 3 → 9 (Full House)
63. Row 6 / Column 3 → 3 (Full House)
64. Row 6 / Column 5 → 8 (Full House)