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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Naked Pair, Locked Candidates Type 1 (Pointing), undefined, Naked Triple, Swordfish, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 5 → 5 (Hidden Single)
2. Row 5 / Column 9 → 9 (Hidden Single)
3. Row 6 / Column 7 → 6 (Hidden Single)
4. Row 7 / Column 2 → 5 (Hidden Single)
5. Row 5 / Column 7 → 1 (Hidden Single)
6. Locked Pair: 2,6 in r4c23 => r4c6,r5c3<>2
7. Row 5 / Column 3 → 8 (Naked Single)
8. Row 6 / Column 2 → 1 (Naked Single)
9. Row 6 / Column 4 → 8 (Hidden Single)
10. Naked Pair: 4,6 in r27c1 => r18c1<>4
11. Locked Candidates Type 1 (Pointing): 4 in b1 => r2c79<>4
12. X-Wing: 6 c14 r27 => r2c36<>6
13. Naked Triple: 2,5,7 in r2c679 => r2c34<>2, r2c4<>7
14. X-Wing: 9 r28 c34 => r17c4,r9c3<>9
15. Swordfish: 2 r258 c467 => r1c47,r3c6,r7c47<>2
16. Row 1 / Column 4 → 3 (Naked Single)
17. Row 1 / Column 7 → 4 (Naked Single)
18. Row 7 / Column 7 → 7 (Naked Single)
19. Row 7 / Column 4 → 6 (Naked Single)
20. Row 2 / Column 4 → 9 (Naked Single)
21. Row 7 / Column 1 → 4 (Naked Single)
22. Row 2 / Column 3 → 4 (Naked Single)
23. Row 8 / Column 4 → 2 (Naked Single)
24. Row 5 / Column 4 → 7 (Full House)
25. Row 2 / Column 1 → 6 (Naked Single)
26. Row 7 / Column 5 → 9 (Naked Single)
27. Row 7 / Column 8 → 2 (Full House)
28. Row 8 / Column 7 → 5 (Naked Single)
29. Row 2 / Column 7 → 2 (Full House)
30. Row 5 / Column 1 → 3 (Naked Single)
31. Row 5 / Column 6 → 2 (Full House)
32. Row 6 / Column 5 → 4 (Naked Single)
33. Row 4 / Column 6 → 3 (Full House)
34. Row 1 / Column 8 → 8 (Naked Single)
35. Row 2 / Column 6 → 7 (Naked Single)
36. Row 2 / Column 9 → 5 (Full House)
37. Row 6 / Column 1 → 7 (Naked Single)
38. Row 6 / Column 8 → 3 (Full House)
39. Row 1 / Column 1 → 1 (Naked Single)
40. Row 8 / Column 1 → 8 (Full House)
41. Row 3 / Column 8 → 7 (Naked Single)
42. Row 3 / Column 9 → 3 (Full House)
43. Row 1 / Column 5 → 2 (Naked Single)
44. Row 1 / Column 2 → 9 (Full House)
45. Row 3 / Column 3 → 2 (Naked Single)
46. Row 3 / Column 2 → 8 (Full House)
47. Row 8 / Column 9 → 4 (Naked Single)
48. Row 4 / Column 8 → 4 (Naked Single)
49. Row 4 / Column 9 → 7 (Full House)
50. Row 9 / Column 8 → 9 (Full House)
51. Row 9 / Column 9 → 8 (Full House)
52. Row 3 / Column 5 → 1 (Naked Single)
53. Row 3 / Column 6 → 6 (Full House)
54. Row 9 / Column 5 → 7 (Full House)
55. Row 9 / Column 2 → 6 (Naked Single)
56. Row 4 / Column 2 → 2 (Full House)
57. Row 4 / Column 3 → 6 (Full House)
58. Row 8 / Column 6 → 1 (Naked Single)
59. Row 8 / Column 3 → 9 (Full House)
60. Row 9 / Column 3 → 1 (Full House)
61. Row 9 / Column 6 → 4 (Full House)