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

This Sudoku Puzzle has 66 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 4 → 5 (Hidden Single)
2. Row 2 / Column 1 → 4 (Hidden Single)
3. Row 2 / Column 5 → 7 (Hidden Single)
4. Row 5 / Column 9 → 2 (Hidden Single)
5. Row 4 / Column 9 → 5 (Naked Single)
6. Row 6 / Column 9 → 1 (Naked Single)
7. Row 7 / Column 1 → 2 (Hidden Single)
8. Row 6 / Column 3 → 3 (Hidden Single)
9. Row 8 / Column 6 → 4 (Hidden Single)
10. Row 3 / Column 5 → 1 (Hidden Single)
11. Row 6 / Column 1 → 5 (Hidden Single)
12. Row 5 / Column 6 → 1 (Hidden Single)
13. Row 8 / Column 7 → 5 (Hidden Single)
14. Row 7 / Column 6 → 5 (Hidden Single)
15. Locked Candidates Type 1 (Pointing): 1 in b1 => r1c7<>1
16. Locked Candidates Type 1 (Pointing): 8 in b2 => r69c4<>8
17. Locked Candidates Type 1 (Pointing): 9 in b2 => r49c4<>9
18. Locked Candidates Type 1 (Pointing): 6 in b3 => r2c3<>6
19. Row 1 / Column 3 → 6 (Hidden Single)
20. Row 1 / Column 7 → 2 (Hidden Single)
21. Row 3 / Column 3 → 2 (Hidden Single)
22. Locked Candidates Type 1 (Pointing): 6 in b4 => r4c45<>6
23. Locked Candidates Type 1 (Pointing): 9 in b5 => r4c12<>9
24. Row 4 / Column 1 → 6 (Naked Single)
25. Locked Candidates Type 1 (Pointing): 8 in b8 => r9c8<>8
26. Locked Candidates Type 2 (Claiming): 8 in r3 => r2c89<>8
27. Locked Candidates Type 2 (Claiming): 9 in r3 => r2c79<>9
28. Naked Pair: 8,9 in r5c13 => r5c2<>9
29. XY-Wing: 6/9/2 in r48c5,r9c4 => r4c4,r9c5<>2
30. Row 4 / Column 4 → 4 (Naked Single)
31. Row 4 / Column 2 → 7 (Naked Single)
32. Row 6 / Column 4 → 6 (Naked Single)
33. Row 4 / Column 6 → 9 (Naked Single)
34. Row 4 / Column 5 → 2 (Full House)
35. Row 5 / Column 2 → 4 (Naked Single)
36. Row 6 / Column 5 → 8 (Naked Single)
37. Row 6 / Column 6 → 7 (Full House)
38. Row 9 / Column 6 → 8 (Full House)
39. Row 6 / Column 7 → 4 (Full House)
40. Row 5 / Column 8 → 7 (Full House)
41. Row 9 / Column 4 → 2 (Naked Single)
42. Row 3 / Column 7 → 9 (Naked Single)
43. Row 3 / Column 9 → 8 (Naked Single)
44. Row 3 / Column 8 → 4 (Full House)
45. Row 7 / Column 7 → 1 (Naked Single)
46. Row 2 / Column 7 → 3 (Naked Single)
47. Row 9 / Column 7 → 7 (Full House)
48. Row 9 / Column 8 → 6 (Naked Single)
49. Row 2 / Column 9 → 6 (Naked Single)
50. Row 2 / Column 8 → 1 (Full House)
51. Row 7 / Column 8 → 8 (Full House)
52. Row 7 / Column 9 → 9 (Naked Single)
53. Row 7 / Column 2 → 6 (Full House)
54. Row 8 / Column 9 → 3 (Full House)
55. Row 9 / Column 5 → 9 (Naked Single)
56. Row 8 / Column 5 → 6 (Full House)
57. Row 8 / Column 1 → 9 (Full House)
58. Row 9 / Column 2 → 1 (Naked Single)
59. Row 1 / Column 2 → 9 (Full House)
60. Row 9 / Column 1 → 3 (Full House)
61. Row 5 / Column 1 → 8 (Naked Single)
62. Row 1 / Column 1 → 1 (Full House)
63. Row 1 / Column 4 → 8 (Full House)
64. Row 2 / Column 3 → 8 (Full House)
65. Row 5 / Column 3 → 9 (Full House)
66. Row 2 / Column 4 → 9 (Full House)