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

This Sudoku Puzzle has 70 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Hidden Pair, Turbot Fish, undefined, Locked Pair, Naked Single, Skyscraper, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 8 → 5 (Hidden Single)
2. Row 5 / Column 9 → 5 (Hidden Single)
3. Row 8 / Column 8 → 1 (Hidden Single)
4. Row 9 / Column 4 → 3 (Hidden Single)
5. Row 2 / Column 7 → 1 (Hidden Single)
6. Row 9 / Column 9 → 6 (Hidden Single)
7. Row 9 / Column 8 → 8 (Hidden Single)
8. Row 2 / Column 6 → 7 (Hidden Single)
9. Row 8 / Column 5 → 7 (Hidden Single)
10. Locked Candidates Type 1 (Pointing): 2 in b8 => r13456c5<>2
11. Locked Candidates Type 1 (Pointing): 2 in b2 => r46c4<>2
12. Locked Candidates Type 2 (Claiming): 3 in c2 => r456c3,r56c1<>3
13. Naked Triple: 4,7,9 in r8c2,r9c13 => r7c1<>4, r7c13<>7, r7c3<>9
14. Locked Candidates Type 1 (Pointing): 7 in b7 => r9c7<>7
15. Hidden Pair: 6,8 in r3c35 => r3c3<>3, r3c5<>9
16. Locked Candidates Type 1 (Pointing): 9 in b2 => r1c79<>9
17. Hidden Pair: 1,5 in r4c35 => r4c35<>6, r4c3<>7, r4c35<>9
18. Locked Candidates Type 1 (Pointing): 7 in b4 => r6c8<>7
19. Turbot Fish: 4 r6c4 =4= r8c4 -4- r8c2 =4= r9c1 => r6c1<>4
20. W-Wing: 9/8 in r1c5,r8c6 connected by 8 in r5c56 => r79c5<>9
21. Locked Pair: 2,4 in r79c5 => r56c5,r8c4<>4
22. Row 6 / Column 4 → 4 (Hidden Single)
23. Row 8 / Column 2 → 4 (Hidden Single)
24. Row 9 / Column 1 → 7 (Naked Single)
25. Row 9 / Column 3 → 9 (Naked Single)
26. Row 5 / Column 1 → 4 (Hidden Single)
27. Row 6 / Column 3 → 7 (Hidden Single)
28. Row 1 / Column 1 → 1 (Hidden Single)
29. Skyscraper: 6 in r2c4,r6c5 (connected by r26c2) => r3c5,r4c4<>6
30. Row 3 / Column 5 → 8 (Naked Single)
31. Row 4 / Column 4 → 9 (Naked Single)
32. Row 1 / Column 5 → 9 (Naked Single)
33. Row 3 / Column 3 → 6 (Naked Single)
34. Row 1 / Column 4 → 2 (Naked Single)
35. Row 2 / Column 4 → 6 (Full House)
36. Row 8 / Column 4 → 8 (Full House)
37. Row 2 / Column 2 → 2 (Full House)
38. Row 8 / Column 6 → 9 (Full House)
39. Row 5 / Column 3 → 1 (Naked Single)
40. Row 1 / Column 9 → 7 (Naked Single)
41. Row 3 / Column 1 → 3 (Naked Single)
42. Row 1 / Column 3 → 8 (Full House)
43. Row 1 / Column 7 → 3 (Full House)
44. Row 4 / Column 3 → 5 (Naked Single)
45. Row 7 / Column 3 → 3 (Full House)
46. Row 7 / Column 1 → 5 (Full House)
47. Row 6 / Column 1 → 2 (Full House)
48. Row 5 / Column 5 → 6 (Naked Single)
49. Row 4 / Column 5 → 1 (Naked Single)
50. Row 6 / Column 6 → 3 (Naked Single)
51. Row 6 / Column 5 → 5 (Naked Single)
52. Row 4 / Column 6 → 2 (Naked Single)
53. Row 5 / Column 6 → 8 (Full House)
54. Row 6 / Column 8 → 9 (Naked Single)
55. Row 6 / Column 2 → 6 (Full House)
56. Row 5 / Column 7 → 2 (Naked Single)
57. Row 4 / Column 2 → 3 (Naked Single)
58. Row 5 / Column 2 → 9 (Full House)
59. Row 5 / Column 8 → 3 (Full House)
60. Row 9 / Column 7 → 4 (Naked Single)
61. Row 9 / Column 5 → 2 (Full House)
62. Row 7 / Column 5 → 4 (Full House)
63. Row 4 / Column 8 → 7 (Naked Single)
64. Row 4 / Column 7 → 6 (Full House)
65. Row 3 / Column 7 → 9 (Naked Single)
66. Row 7 / Column 7 → 7 (Full House)
67. Row 7 / Column 8 → 2 (Naked Single)
68. Row 3 / Column 8 → 4 (Full House)
69. Row 3 / Column 9 → 2 (Full House)
70. Row 7 / Column 9 → 9 (Full House)