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

This Sudoku Puzzle has 59 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Locked Candidates Type 1 (Pointing), undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 6 → 5 (Naked Single)
2. Row 2 / Column 8 → 1 (Naked Single)
3. Row 2 / Column 4 → 8 (Naked Single)
4. Row 2 / Column 2 → 3 (Full House)
5. Row 5 / Column 1 → 9 (Hidden Single)
6. Row 1 / Column 2 → 5 (Hidden Single)
7. Row 4 / Column 8 → 5 (Hidden Single)
8. Row 3 / Column 9 → 5 (Hidden Single)
9. Row 5 / Column 4 → 5 (Hidden Single)
10. Locked Pair: 3,6 in r78c6 => r46c6,r79c5,r8c4<>6
11. Locked Candidates Type 1 (Pointing): 2 in b2 => r5c5<>2
12. Row 5 / Column 5 → 7 (Naked Single)
13. Row 7 / Column 5 → 5 (Naked Single)
14. Row 9 / Column 5 → 1 (Naked Single)
15. Row 8 / Column 4 → 7 (Naked Single)
16. Row 8 / Column 8 → 4 (Naked Single)
17. Row 9 / Column 3 → 5 (Hidden Single)
18. Row 3 / Column 4 → 1 (Hidden Single)
19. Row 8 / Column 9 → 1 (Hidden Single)
20. Row 7 / Column 1 → 4 (Hidden Single)
21. Row 7 / Column 3 → 3 (Hidden Single)
22. Row 7 / Column 6 → 6 (Naked Single)
23. Row 8 / Column 6 → 3 (Full House)
24. Row 7 / Column 7 → 9 (Naked Single)
25. Row 7 / Column 9 → 7 (Full House)
26. Row 9 / Column 8 → 2 (Naked Single)
27. Row 1 / Column 8 → 9 (Naked Single)
28. Row 6 / Column 8 → 7 (Full House)
29. Row 9 / Column 9 → 3 (Naked Single)
30. Row 9 / Column 7 → 6 (Full House)
31. Row 9 / Column 1 → 7 (Full House)
32. Row 1 / Column 1 → 1 (Hidden Single)
33. Row 4 / Column 9 → 9 (Hidden Single)
34. Row 4 / Column 4 → 6 (Naked Single)
35. Row 6 / Column 4 → 9 (Full House)
36. Row 4 / Column 2 → 7 (Hidden Single)
37. Row 5 / Column 7 → 3 (Hidden Single)
38. Row 3 / Column 3 → 7 (Hidden Single)
39. W-Wing: 4/2 in r5c9,r6c6 connected by 2 in r4c67 => r6c7<>4
40. XY-Chain: 2 2- r3c7 -8- r3c1 -6- r1c3 -8- r5c3 -4- r5c9 -2 => r1c9,r46c7<>2
41. Row 1 / Column 9 → 4 (Naked Single)
42. Row 5 / Column 9 → 2 (Full House)
43. Row 6 / Column 7 → 1 (Naked Single)
44. Row 4 / Column 7 → 4 (Full House)
45. Row 5 / Column 2 → 8 (Naked Single)
46. Row 5 / Column 3 → 4 (Full House)
47. Row 4 / Column 3 → 1 (Naked Single)
48. Row 4 / Column 6 → 2 (Full House)
49. Row 6 / Column 6 → 4 (Full House)
50. Row 8 / Column 2 → 6 (Naked Single)
51. Row 6 / Column 2 → 2 (Full House)
52. Row 6 / Column 3 → 6 (Full House)
53. Row 8 / Column 1 → 8 (Full House)
54. Row 1 / Column 3 → 8 (Full House)
55. Row 3 / Column 1 → 6 (Full House)
56. Row 1 / Column 7 → 2 (Naked Single)
57. Row 1 / Column 5 → 6 (Full House)
58. Row 3 / Column 5 → 2 (Full House)
59. Row 3 / Column 7 → 8 (Full House)