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

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 6 / Column 6 → 4 (Naked Single)
2. Row 4 / Column 6 → 2 (Naked Single)
3. Row 5 / Column 4 → 7 (Hidden Single)
4. Row 6 / Column 8 → 5 (Hidden Single)
5. Row 2 / Column 8 → 7 (Hidden Single)
6. Row 1 / Column 2 → 7 (Hidden Single)
7. Row 8 / Column 7 → 1 (Hidden Single)
8. Row 4 / Column 7 → 6 (Hidden Single)
9. Row 5 / Column 9 → 3 (Hidden Single)
10. Row 5 / Column 7 → 4 (Naked Single)
11. Row 4 / Column 8 → 9 (Full House)
12. Row 4 / Column 4 → 1 (Naked Single)
13. Row 4 / Column 1 → 4 (Full House)
14. Row 6 / Column 5 → 9 (Full House)
15. Row 6 / Column 2 → 8 (Naked Single)
16. Row 6 / Column 3 → 3 (Naked Single)
17. Row 6 / Column 1 → 1 (Full House)
18. Row 3 / Column 5 → 7 (Hidden Single)
19. Row 8 / Column 6 → 7 (Hidden Single)
20. Row 1 / Column 1 → 9 (Hidden Single)
21. Row 5 / Column 1 → 2 (Naked Single)
22. Row 5 / Column 3 → 9 (Full House)
23. Row 9 / Column 7 → 3 (Hidden Single)
24. Row 9 / Column 6 → 8 (Naked Single)
25. Row 7 / Column 5 → 1 (Hidden Single)
26. Locked Candidates Type 1 (Pointing): 4 in b1 => r789c3<>4
27. Locked Candidates Type 2 (Claiming): 6 in r3 => r2c3<>6
28. Locked Candidates Type 2 (Claiming): 4 in r9 => r78c4,r8c5<>4
29. Naked Pair: 3,6 in r7c16 => r7c3<>6, r7c4<>3
30. W-Wing: 5/6 in r3c1,r8c5 connected by 6 in r7c16 => r8c1<>5
31. Row 3 / Column 1 → 5 (Hidden Single)
32. Row 2 / Column 3 → 4 (Naked Single)
33. Row 3 / Column 3 → 6 (Full House)
34. Row 3 / Column 7 → 8 (Naked Single)
35. Row 1 / Column 7 → 5 (Full House)
36. Row 3 / Column 4 → 4 (Full House)
37. Row 2 / Column 9 → 6 (Naked Single)
38. Row 1 / Column 9 → 4 (Full House)
39. Row 1 / Column 5 → 6 (Naked Single)
40. Row 1 / Column 6 → 3 (Naked Single)
41. Row 1 / Column 4 → 8 (Full House)
42. Row 7 / Column 6 → 6 (Full House)
43. Row 8 / Column 5 → 5 (Naked Single)
44. Row 7 / Column 1 → 3 (Naked Single)
45. Row 8 / Column 1 → 6 (Full House)
46. Row 2 / Column 5 → 2 (Naked Single)
47. Row 2 / Column 4 → 5 (Full House)
48. Row 9 / Column 5 → 4 (Full House)
49. Row 8 / Column 3 → 8 (Naked Single)
50. Row 9 / Column 4 → 2 (Naked Single)
51. Row 9 / Column 3 → 5 (Full House)
52. Row 7 / Column 3 → 2 (Full House)
53. Row 8 / Column 8 → 4 (Naked Single)
54. Row 7 / Column 8 → 8 (Full House)
55. Row 7 / Column 4 → 9 (Naked Single)
56. Row 7 / Column 2 → 4 (Full House)
57. Row 8 / Column 2 → 9 (Full House)
58. Row 8 / Column 4 → 3 (Full House)