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

This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, Empty Rectangle, Sashimi Swordfish techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 3 / Column 7 → 2 (Naked Single)
2. Row 6 / Column 6 → 7 (Naked Single)
3. Row 1 / Column 7 → 7 (Naked Single)
4. Row 6 / Column 2 → 2 (Naked Single)
5. Row 7 / Column 7 → 8 (Naked Single)
6. Row 6 / Column 1 → 6 (Naked Single)
7. Row 6 / Column 8 → 8 (Naked Single)
8. Row 6 / Column 9 → 3 (Naked Single)
9. Row 6 / Column 4 → 5 (Full House)
10. Row 4 / Column 3 → 8 (Hidden Single)
11. Row 8 / Column 6 → 4 (Hidden Single)
12. Row 9 / Column 5 → 8 (Hidden Single)
13. Row 2 / Column 9 → 8 (Hidden Single)
14. Row 5 / Column 5 → 3 (Hidden Single)
15. Row 8 / Column 4 → 3 (Hidden Single)
16. Row 4 / Column 9 → 4 (Hidden Single)
17. Row 5 / Column 7 → 1 (Naked Single)
18. Row 9 / Column 7 → 4 (Full House)
19. Row 7 / Column 3 → 3 (Hidden Single)
20. Row 1 / Column 2 → 3 (Hidden Single)
21. Row 4 / Column 8 → 2 (Hidden Single)
22. Row 7 / Column 1 → 5 (Hidden Single)
23. Row 4 / Column 2 → 7 (Hidden Single)
24. Locked Candidates Type 1 (Pointing): 7 in b7 => r9c9<>7
25. Naked Pair: 1,9 in r2c2,r3c1 => r1c13,r2c13,r3c3<>9, r2c1<>1
26. Row 1 / Column 1 → 2 (Naked Single)
27. Naked Pair: 5,6 in r13c3 => r2c3<>5, r2c3<>6
28. Naked Pair: 1,9 in r2c26 => r2c458<>9, r2c5<>1
29. Locked Candidates Type 1 (Pointing): 9 in b3 => r789c9<>9
30. Empty Rectangle: 9 in b2 (r28c2) => r8c5<>9
31. Row 8 / Column 5 → 7 (Naked Single)
32. Sashimi Swordfish: 9 r278 c258 fr2c6 => r13c5<>9
33. Row 1 / Column 9 → 9 (Hidden Single)
34. Row 2 / Column 6 → 9 (Hidden Single)
35. Row 4 / Column 6 → 1 (Full House)
36. Row 2 / Column 2 → 1 (Naked Single)
37. Row 8 / Column 2 → 9 (Full House)
38. Row 3 / Column 1 → 9 (Naked Single)
39. Row 8 / Column 8 → 5 (Naked Single)
40. Row 8 / Column 9 → 1 (Full House)
41. Row 9 / Column 3 → 7 (Naked Single)
42. Row 9 / Column 1 → 1 (Full House)
43. Row 5 / Column 1 → 4 (Naked Single)
44. Row 2 / Column 1 → 7 (Full House)
45. Row 5 / Column 3 → 9 (Full House)
46. Row 2 / Column 8 → 6 (Naked Single)
47. Row 3 / Column 9 → 5 (Full House)
48. Row 9 / Column 9 → 2 (Naked Single)
49. Row 9 / Column 4 → 9 (Full House)
50. Row 7 / Column 5 → 2 (Full House)
51. Row 2 / Column 3 → 4 (Naked Single)
52. Row 2 / Column 4 → 2 (Naked Single)
53. Row 4 / Column 4 → 6 (Full House)
54. Row 2 / Column 5 → 5 (Full House)
55. Row 4 / Column 5 → 9 (Full House)
56. Row 5 / Column 8 → 7 (Naked Single)
57. Row 5 / Column 9 → 6 (Full House)
58. Row 7 / Column 9 → 7 (Full House)
59. Row 7 / Column 8 → 9 (Full House)
60. Row 3 / Column 3 → 6 (Naked Single)
61. Row 1 / Column 3 → 5 (Full House)
62. Row 1 / Column 5 → 6 (Full House)
63. Row 3 / Column 5 → 1 (Full House)