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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 5 / Column 4 → 3 (Naked Single)
2. Row 4 / Column 6 → 6 (Naked Single)
3. Row 8 / Column 5 → 9 (Naked Single)
4. Row 5 / Column 1 → 2 (Naked Single)
5. Row 2 / Column 6 → 2 (Naked Single)
6. Row 7 / Column 5 → 6 (Naked Single)
7. Row 8 / Column 4 → 4 (Naked Single)
8. Row 8 / Column 6 → 1 (Full House)
9. Row 5 / Column 6 → 7 (Naked Single)
10. Row 5 / Column 9 → 8 (Full House)
11. Row 6 / Column 6 → 4 (Full House)
12. Row 6 / Column 4 → 5 (Naked Single)
13. Row 4 / Column 9 → 1 (Naked Single)
14. Row 2 / Column 4 → 6 (Naked Single)
15. Row 4 / Column 4 → 9 (Full House)
16. Row 4 / Column 5 → 8 (Naked Single)
17. Row 6 / Column 5 → 2 (Full House)
18. Row 6 / Column 1 → 1 (Naked Single)
19. Row 6 / Column 9 → 7 (Naked Single)
20. Row 6 / Column 8 → 6 (Full House)
21. Row 1 / Column 9 → 2 (Hidden Single)
22. Row 8 / Column 3 → 2 (Hidden Single)
23. Row 2 / Column 9 → 9 (Hidden Single)
24. Row 7 / Column 1 → 9 (Hidden Single)
25. Hidden Pair: 4,8 in r2c2,r3c1 => r2c2<>1, r2c2,r3c1<>3, r2c2,r3c1<>5, r3c1<>6
26. Swordfish: 3 r148 c128 => r239c8,r9c12<>3
27. Swordfish: 5 r148 c128 => r23c8,r7c2<>5
28. Naked Pair: 1,8 in r29c8 => r1c8<>1, r38c8<>8
29. Row 3 / Column 8 → 7 (Naked Single)
30. Naked Triple: 3,4,5 in r79c9,r8c8 => r7c7<>4
31. Locked Candidates Type 1 (Pointing): 4 in b9 => r3c9<>4
32. Naked Pair: 3,5 in r3c59 => r3c3<>3, r3c3<>5
33. Row 3 / Column 3 → 6 (Naked Single)
34. Row 1 / Column 7 → 6 (Hidden Single)
35. Row 9 / Column 1 → 6 (Hidden Single)
36. Row 1 / Column 2 → 1 (Hidden Single)
37. Row 3 / Column 1 → 4 (Hidden Single)
38. Row 2 / Column 2 → 8 (Naked Single)
39. Row 3 / Column 7 → 8 (Naked Single)
40. Row 2 / Column 8 → 1 (Naked Single)
41. Row 9 / Column 2 → 4 (Naked Single)
42. Row 8 / Column 7 → 7 (Naked Single)
43. Row 2 / Column 7 → 4 (Naked Single)
44. Row 7 / Column 7 → 1 (Full House)
45. Row 9 / Column 8 → 8 (Naked Single)
46. Row 7 / Column 2 → 7 (Naked Single)
47. Row 9 / Column 9 → 3 (Naked Single)
48. Row 9 / Column 3 → 1 (Full House)
49. Row 7 / Column 3 → 5 (Naked Single)
50. Row 2 / Column 3 → 3 (Full House)
51. Row 7 / Column 9 → 4 (Full House)
52. Row 3 / Column 9 → 5 (Full House)
53. Row 8 / Column 8 → 5 (Full House)
54. Row 1 / Column 1 → 5 (Full House)
55. Row 2 / Column 5 → 5 (Full House)
56. Row 1 / Column 8 → 3 (Full House)
57. Row 3 / Column 5 → 3 (Full House)
58. Row 8 / Column 2 → 3 (Naked Single)
59. Row 4 / Column 2 → 5 (Full House)
60. Row 4 / Column 1 → 3 (Full House)
61. Row 8 / Column 1 → 8 (Full House)