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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, Locked Candidates Type 2 (Claiming), Remote Pair, undefined, Skyscraper techniques.

Try To Solve This Puzzle

Solution Steps:

1. Row 5 / Column 3 → 8 (Naked Single)
2. Row 7 / Column 1 → 6 (Hidden Single)
3. Row 9 / Column 6 → 4 (Hidden Single)
4. Row 4 / Column 6 → 1 (Hidden Single)
5. Row 2 / Column 2 → 1 (Hidden Single)
6. Row 5 / Column 1 → 1 (Hidden Single)
7. Row 2 / Column 6 → 6 (Hidden Single)
8. Row 1 / Column 7 → 6 (Hidden Single)
9. Row 5 / Column 7 → 3 (Naked Single)
10. Row 5 / Column 9 → 4 (Naked Single)
11. Row 5 / Column 4 → 5 (Naked Single)
12. Row 5 / Column 5 → 6 (Full House)
13. Row 4 / Column 8 → 6 (Hidden Single)
14. Row 1 / Column 3 → 4 (Hidden Single)
15. Row 3 / Column 8 → 4 (Hidden Single)
16. Row 6 / Column 4 → 4 (Hidden Single)
17. Row 3 / Column 9 → 3 (Hidden Single)
18. Row 3 / Column 1 → 5 (Hidden Single)
19. Row 2 / Column 8 → 5 (Hidden Single)
20. Row 8 / Column 2 → 5 (Hidden Single)
21. Locked Candidates Type 1 (Pointing): 8 in b1 => r1c5<>8
22. Naked Triple: 2,7,8 in r78c4,r8c6 => r79c5<>2, r79c5<>7, r79c5<>8
23. Locked Candidates Type 1 (Pointing): 7 in b8 => r2c4<>7
24. Row 2 / Column 4 → 9 (Naked Single)
25. Row 2 / Column 1 → 7 (Full House)
26. Row 6 / Column 6 → 9 (Hidden Single)
27. Row 6 / Column 1 → 3 (Naked Single)
28. Row 6 / Column 2 → 7 (Naked Single)
29. Row 4 / Column 2 → 9 (Full House)
30. Row 1 / Column 2 → 8 (Naked Single)
31. Row 9 / Column 2 → 3 (Full House)
32. Row 4 / Column 5 → 3 (Hidden Single)
33. Row 8 / Column 8 → 3 (Hidden Single)
34. Row 8 / Column 4 → 7 (Hidden Single)
35. Locked Candidates Type 2 (Claiming): 7 in c8 => r7c79,r9c79<>7
36. Remote Pair: 2/8 r6c8 -8- r6c5 -2- r4c4 -8- r7c4 => r7c8<>2, r7c8<>8
37. Row 7 / Column 8 → 7 (Naked Single)
38. Row 9 / Column 3 → 7 (Hidden Single)
39. X-Wing: 8 r47 c49 => r9c9<>8
40. Skyscraper: 2 in r1c5,r8c6 (connected by r18c1) => r3c6<>2
41. Row 3 / Column 6 → 8 (Naked Single)
42. Row 8 / Column 6 → 2 (Full House)
43. Row 8 / Column 1 → 8 (Full House)
44. Row 7 / Column 4 → 8 (Naked Single)
45. Row 4 / Column 4 → 2 (Full House)
46. Row 6 / Column 5 → 8 (Full House)
47. Row 6 / Column 8 → 2 (Full House)
48. Row 9 / Column 8 → 8 (Full House)
49. Row 4 / Column 7 → 7 (Naked Single)
50. Row 4 / Column 9 → 8 (Full House)
51. Row 3 / Column 7 → 9 (Naked Single)
52. Row 1 / Column 9 → 7 (Full House)
53. Row 3 / Column 3 → 2 (Naked Single)
54. Row 1 / Column 1 → 9 (Full House)
55. Row 1 / Column 5 → 2 (Full House)
56. Row 3 / Column 5 → 7 (Full House)
57. Row 7 / Column 3 → 9 (Full House)
58. Row 9 / Column 1 → 2 (Full House)
59. Row 7 / Column 9 → 5 (Naked Single)
60. Row 9 / Column 9 → 9 (Full House)
61. Row 9 / Column 7 → 1 (Naked Single)
62. Row 7 / Column 7 → 2 (Full House)
63. Row 7 / Column 5 → 1 (Full House)
64. Row 9 / Column 5 → 5 (Full House)