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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 1 → 1 (Naked Single)
2. Row 9 / Column 1 → 2 (Naked Single)
3. Row 7 / Column 1 → 6 (Naked Single)
4. Row 4 / Column 6 → 8 (Hidden Single)
5. Row 8 / Column 6 → 2 (Hidden Single)
6. Row 9 / Column 5 → 5 (Hidden Single)
7. Row 8 / Column 4 → 7 (Hidden Single)
8. Row 9 / Column 7 → 8 (Hidden Single)
9. Row 8 / Column 5 → 8 (Hidden Single)
10. Row 2 / Column 8 → 8 (Hidden Single)
11. Locked Candidates Type 1 (Pointing): 6 in b5 => r2c4<>6
12. Row 2 / Column 7 → 6 (Hidden Single)
13. Row 2 / Column 6 → 7 (Hidden Single)
14. Naked Pair: 1,4 in r7c35 => r7c79<>1, r7c7<>4
15. Locked Candidates Type 1 (Pointing): 4 in b9 => r8c23<>4
16. Row 3 / Column 2 → 4 (Hidden Single)
17. X-Wing: 3 r24 c24 => r8c2<>3
18. Row 8 / Column 3 → 3 (Hidden Single)
19. XYZ-Wing: 1/3/6 in r2c4,r3c35 => r3c6<>1
20. Row 3 / Column 6 → 9 (Naked Single)
21. Hidden Rectangle: 1/6 in r1c35,r3c35 => r1c5<>1
22. XY-Chain: 1 1- r1c6 -4- r6c6 -5- r6c2 -9- r8c2 -1- r2c2 -3- r2c4 -1 => r3c5<>1
23. XY-Wing: 1/6/3 in r2c2,r3c35 => r2c4,r3c1<>3
24. Row 2 / Column 4 → 1 (Naked Single)
25. Row 2 / Column 2 → 3 (Full House)
26. Row 3 / Column 1 → 7 (Naked Single)
27. Row 1 / Column 6 → 4 (Naked Single)
28. Row 9 / Column 4 → 4 (Naked Single)
29. Row 7 / Column 5 → 1 (Full House)
30. Row 4 / Column 2 → 5 (Naked Single)
31. Row 1 / Column 1 → 8 (Naked Single)
32. Row 5 / Column 1 → 3 (Full House)
33. Row 6 / Column 6 → 5 (Naked Single)
34. Row 5 / Column 6 → 1 (Full House)
35. Row 6 / Column 4 → 6 (Naked Single)
36. Row 4 / Column 4 → 3 (Full House)
37. Row 5 / Column 5 → 4 (Full House)
38. Row 7 / Column 3 → 4 (Naked Single)
39. Row 6 / Column 2 → 9 (Naked Single)
40. Row 5 / Column 3 → 8 (Full House)
41. Row 6 / Column 8 → 4 (Full House)
42. Row 8 / Column 2 → 1 (Full House)
43. Row 9 / Column 3 → 9 (Full House)
44. Row 9 / Column 9 → 1 (Full House)
45. Row 8 / Column 8 → 9 (Naked Single)
46. Row 8 / Column 7 → 4 (Full House)
47. Row 4 / Column 9 → 2 (Naked Single)
48. Row 5 / Column 8 → 7 (Naked Single)
49. Row 4 / Column 7 → 1 (Naked Single)
50. Row 4 / Column 8 → 6 (Full House)
51. Row 7 / Column 9 → 7 (Naked Single)
52. Row 7 / Column 7 → 2 (Full House)
53. Row 1 / Column 8 → 1 (Naked Single)
54. Row 3 / Column 8 → 2 (Full House)
55. Row 3 / Column 7 → 5 (Naked Single)
56. Row 1 / Column 3 → 6 (Naked Single)
57. Row 3 / Column 3 → 1 (Full House)
58. Row 3 / Column 9 → 3 (Naked Single)
59. Row 3 / Column 5 → 6 (Full House)
60. Row 1 / Column 5 → 3 (Full House)
61. Row 5 / Column 7 → 9 (Naked Single)
62. Row 1 / Column 7 → 7 (Full House)
63. Row 1 / Column 9 → 9 (Full House)
64. Row 5 / Column 9 → 5 (Full House)