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

This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Skyscraper, Locked Candidates Type 2 (Claiming) techniques.

Try To Solve This Puzzle

Solution Steps:

1. Row 8 / Column 8 → 2 (Naked Single)
2. Row 9 / Column 8 → 9 (Naked Single)
3. Row 6 / Column 8 → 5 (Naked Single)
4. Row 4 / Column 8 → 1 (Naked Single)
5. Row 2 / Column 8 → 3 (Naked Single)
6. Row 7 / Column 8 → 4 (Full House)
7. Row 6 / Column 6 → 3 (Hidden Single)
8. Row 5 / Column 5 → 1 (Hidden Single)
9. Row 2 / Column 4 → 2 (Hidden Single)
10. Row 7 / Column 6 → 2 (Hidden Single)
11. Row 2 / Column 3 → 1 (Hidden Single)
12. Row 1 / Column 7 → 1 (Hidden Single)
13. Row 7 / Column 7 → 3 (Hidden Single)
14. Row 6 / Column 4 → 6 (Hidden Single)
15. Row 2 / Column 6 → 8 (Hidden Single)
16. Row 8 / Column 4 → 8 (Hidden Single)
17. Row 7 / Column 5 → 9 (Hidden Single)
18. Row 1 / Column 9 → 2 (Hidden Single)
19. Locked Candidates Type 1 (Pointing): 4 in b1 => r45c3<>4
20. Locked Candidates Type 1 (Pointing): 4 in b5 => r3c4<>4
21. Naked Triple: 6,7,8 in r7c13,r8c2 => r9c13<>7, r9c13<>8, r9c3<>6
22. Locked Candidates Type 1 (Pointing): 8 in b7 => r7c9<>8
23. Skyscraper: 6 in r1c6,r2c2 (connected by r8c26) => r1c3,r2c5<>6
24. Locked Candidates Type 2 (Claiming): 6 in r1 => r3c5<>6
25. Skyscraper: 6 in r2c2,r7c3 (connected by r27c9) => r3c3,r8c2<>6
26. Row 8 / Column 2 → 7 (Naked Single)
27. Row 8 / Column 6 → 6 (Full House)
28. Row 9 / Column 5 → 7 (Full House)
29. Row 6 / Column 2 → 9 (Naked Single)
30. Row 7 / Column 1 → 8 (Naked Single)
31. Row 1 / Column 6 → 9 (Naked Single)
32. Row 4 / Column 6 → 7 (Full House)
33. Row 2 / Column 5 → 5 (Naked Single)
34. Row 5 / Column 2 → 4 (Naked Single)
35. Row 7 / Column 3 → 6 (Naked Single)
36. Row 7 / Column 9 → 7 (Full House)
37. Row 1 / Column 1 → 5 (Naked Single)
38. Row 3 / Column 4 → 7 (Naked Single)
39. Row 2 / Column 2 → 6 (Naked Single)
40. Row 4 / Column 2 → 5 (Full House)
41. Row 3 / Column 5 → 4 (Naked Single)
42. Row 1 / Column 5 → 6 (Full House)
43. Row 1 / Column 3 → 4 (Full House)
44. Row 5 / Column 4 → 9 (Naked Single)
45. Row 4 / Column 4 → 4 (Full House)
46. Row 9 / Column 1 → 2 (Naked Single)
47. Row 9 / Column 3 → 5 (Full House)
48. Row 2 / Column 9 → 9 (Naked Single)
49. Row 2 / Column 1 → 7 (Full House)
50. Row 4 / Column 3 → 2 (Naked Single)
51. Row 4 / Column 7 → 9 (Full House)
52. Row 3 / Column 3 → 3 (Naked Single)
53. Row 3 / Column 1 → 9 (Full House)
54. Row 5 / Column 1 → 3 (Full House)
55. Row 5 / Column 9 → 8 (Naked Single)
56. Row 3 / Column 7 → 6 (Naked Single)
57. Row 3 / Column 9 → 5 (Full House)
58. Row 9 / Column 9 → 6 (Full House)
59. Row 9 / Column 7 → 8 (Full House)
60. Row 5 / Column 3 → 7 (Naked Single)
61. Row 5 / Column 7 → 2 (Full House)
62. Row 6 / Column 7 → 7 (Full House)
63. Row 6 / Column 3 → 8 (Full House)