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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Naked Single, Full House, Skyscraper, undefined, Locked Candidates Type 1 (Pointing) techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 3 → 5 (Hidden Single)
2. Row 1 / Column 8 → 2 (Hidden Single)
3. Row 8 / Column 2 → 7 (Hidden Single)
4. Row 8 / Column 8 → 5 (Hidden Single)
5. Row 5 / Column 7 → 5 (Hidden Single)
6. Row 6 / Column 6 → 2 (Hidden Single)
7. Row 5 / Column 1 → 7 (Hidden Single)
8. Row 5 / Column 5 → 1 (Naked Single)
9. Row 5 / Column 9 → 8 (Naked Single)
10. Row 5 / Column 3 → 2 (Full House)
11. Row 8 / Column 5 → 9 (Naked Single)
12. Row 4 / Column 5 → 5 (Hidden Single)
13. Row 8 / Column 3 → 6 (Hidden Single)
14. Row 9 / Column 2 → 2 (Hidden Single)
15. Row 7 / Column 5 → 2 (Hidden Single)
16. Row 4 / Column 4 → 7 (Hidden Single)
17. Row 6 / Column 5 → 3 (Naked Single)
18. Row 9 / Column 5 → 4 (Naked Single)
19. Row 3 / Column 5 → 6 (Naked Single)
20. Row 1 / Column 5 → 7 (Full House)
21. Row 6 / Column 2 → 6 (Hidden Single)
22. Row 7 / Column 4 → 3 (Hidden Single)
23. Row 3 / Column 7 → 4 (Hidden Single)
24. Row 2 / Column 4 → 4 (Hidden Single)
25. Row 7 / Column 3 → 4 (Hidden Single)
26. Row 1 / Column 1 → 6 (Hidden Single)
27. Row 2 / Column 8 → 6 (Hidden Single)
28. Row 6 / Column 8 → 4 (Hidden Single)
29. Row 1 / Column 7 → 8 (Hidden Single)
30. Row 7 / Column 9 → 6 (Hidden Single)
31. Row 1 / Column 9 → 3 (Hidden Single)
32. Row 9 / Column 7 → 3 (Hidden Single)
33. Row 9 / Column 9 → 7 (Hidden Single)
34. Row 6 / Column 7 → 7 (Hidden Single)
35. Skyscraper: 9 in r1c4,r3c9 (connected by r6c49) => r3c6<>9
36. 2-String Kite: 1 in r3c9,r4c2 (connected by r4c8,r6c9) => r3c2<>1
37. 2-String Kite: 9 in r3c1,r7c7 (connected by r2c7,r3c9) => r7c1<>9
38. Locked Candidates Type 1 (Pointing): 9 in b7 => r9c8<>9
39. W-Wing: 1/9 in r1c3,r2c7 connected by 9 in r3c19 => r2c2<>1
40. Row 2 / Column 2 → 3 (Naked Single)
41. Row 3 / Column 2 → 8 (Naked Single)
42. Row 4 / Column 2 → 1 (Full House)
43. Row 6 / Column 3 → 8 (Full House)
44. Row 4 / Column 8 → 9 (Naked Single)
45. Row 4 / Column 6 → 8 (Full House)
46. Row 6 / Column 4 → 9 (Full House)
47. Row 6 / Column 9 → 1 (Full House)
48. Row 3 / Column 9 → 9 (Full House)
49. Row 2 / Column 7 → 1 (Full House)
50. Row 2 / Column 6 → 9 (Full House)
51. Row 7 / Column 7 → 9 (Full House)
52. Row 8 / Column 6 → 1 (Naked Single)
53. Row 3 / Column 6 → 3 (Full House)
54. Row 1 / Column 4 → 1 (Full House)
55. Row 3 / Column 1 → 1 (Full House)
56. Row 8 / Column 4 → 8 (Full House)
57. Row 1 / Column 3 → 9 (Full House)
58. Row 9 / Column 3 → 1 (Full House)
59. Row 7 / Column 1 → 8 (Naked Single)
60. Row 7 / Column 8 → 1 (Full House)
61. Row 9 / Column 8 → 8 (Full House)
62. Row 9 / Column 1 → 9 (Full House)