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

This Sudoku Puzzle has 67 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Full House, Locked Candidates Type 2 (Claiming), Skyscraper, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 1 → 9 (Hidden Single)
2. Row 2 / Column 4 → 2 (Hidden Single)
3. Row 5 / Column 5 → 6 (Hidden Single)
4. Row 1 / Column 4 → 4 (Hidden Single)
5. Locked Candidates Type 1 (Pointing): 8 in b1 => r79c1<>8
6. Locked Candidates Type 1 (Pointing): 2 in b4 => r5c789<>2
7. Locked Candidates Type 1 (Pointing): 6 in b4 => r28c2<>6
8. Locked Candidates Type 1 (Pointing): 6 in b1 => r3c789<>6
9. Row 7 / Column 9 → 6 (Hidden Single)
10. Row 3 / Column 1 → 6 (Hidden Single)
11. Row 8 / Column 3 → 6 (Hidden Single)
12. Row 7 / Column 7 → 4 (Hidden Single)
13. Row 5 / Column 9 → 4 (Hidden Single)
14. Row 1 / Column 1 → 8 (Hidden Single)
15. Row 2 / Column 8 → 4 (Hidden Single)
16. Row 2 / Column 7 → 6 (Hidden Single)
17. Locked Candidates Type 1 (Pointing): 5 in b5 => r8c6<>5
18. Locked Candidates Type 1 (Pointing): 3 in b6 => r13c7<>3
19. Locked Candidates Type 1 (Pointing): 2 in b7 => r9c79<>2
20. Row 9 / Column 9 → 5 (Naked Single)
21. Row 1 / Column 9 → 3 (Naked Single)
22. Row 3 / Column 9 → 2 (Full House)
23. Row 1 / Column 3 → 1 (Naked Single)
24. Row 3 / Column 8 → 1 (Naked Single)
25. Row 1 / Column 5 → 9 (Naked Single)
26. Row 1 / Column 7 → 5 (Full House)
27. Row 3 / Column 7 → 9 (Full House)
28. Row 5 / Column 8 → 8 (Naked Single)
29. Row 4 / Column 7 → 1 (Naked Single)
30. Row 8 / Column 8 → 2 (Naked Single)
31. Row 5 / Column 7 → 3 (Naked Single)
32. Row 6 / Column 7 → 2 (Naked Single)
33. Row 8 / Column 5 → 5 (Hidden Single)
34. Row 7 / Column 3 → 5 (Hidden Single)
35. Row 8 / Column 6 → 9 (Hidden Single)
36. Locked Candidates Type 2 (Claiming): 8 in r7 => r8c4,r9c5<>8
37. Skyscraper: 1 in r7c4,r9c2 (connected by r6c24) => r7c1,r9c5<>1
38. Row 7 / Column 1 → 7 (Naked Single)
39. 2-String Kite: 7 in r2c2,r5c6 (connected by r4c2,r5c3) => r2c6<>7
40. W-Wing: 7/3 in r2c2,r9c5 connected by 3 in r8c24 => r2c5<>7
41. Row 2 / Column 2 → 7 (Hidden Single)
42. Row 3 / Column 3 → 3 (Full House)
43. Row 4 / Column 2 → 6 (Naked Single)
44. Row 9 / Column 3 → 2 (Naked Single)
45. Row 5 / Column 3 → 7 (Full House)
46. Row 4 / Column 8 → 5 (Naked Single)
47. Row 6 / Column 8 → 6 (Full House)
48. Row 6 / Column 2 → 1 (Naked Single)
49. Row 5 / Column 1 → 2 (Full House)
50. Row 9 / Column 1 → 1 (Full House)
51. Row 5 / Column 6 → 1 (Full House)
52. Row 6 / Column 4 → 3 (Naked Single)
53. Row 6 / Column 6 → 5 (Full House)
54. Row 2 / Column 6 → 3 (Naked Single)
55. Row 2 / Column 5 → 1 (Full House)
56. Row 8 / Column 4 → 7 (Naked Single)
57. Row 7 / Column 5 → 8 (Naked Single)
58. Row 7 / Column 4 → 1 (Full House)
59. Row 4 / Column 4 → 8 (Full House)
60. Row 9 / Column 5 → 3 (Full House)
61. Row 3 / Column 5 → 7 (Full House)
62. Row 4 / Column 6 → 7 (Full House)
63. Row 3 / Column 6 → 8 (Full House)
64. Row 8 / Column 7 → 8 (Naked Single)
65. Row 8 / Column 2 → 3 (Full House)
66. Row 9 / Column 2 → 8 (Full House)
67. Row 9 / Column 7 → 7 (Full House)