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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Pair, undefined, Full House, Swordfish techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 7 → 1 (Hidden Single)
2. Row 4 / Column 4 → 2 (Hidden Single)
3. Row 8 / Column 1 → 7 (Hidden Single)
4. Row 4 / Column 6 → 7 (Hidden Single)
5. Row 4 / Column 7 → 4 (Naked Single)
6. Locked Candidates Type 1 (Pointing): 3 in b5 => r6c13<>3
7. Locked Candidates Type 1 (Pointing): 9 in b6 => r78c9<>9
8. Locked Candidates Type 2 (Claiming): 2 in r3 => r2c9<>2
9. Locked Candidates Type 2 (Claiming): 3 in c3 => r7c1,r9c2<>3
10. Naked Triple: 4,8,9 in r7c1,r89c2 => r7c3<>4, r79c3<>8, r79c3<>9
11. Naked Triple: 2,6,8 in r7c79,r8c9 => r89c8,r9c7<>6
12. Row 8 / Column 8 → 9 (Naked Single)
13. Row 2 / Column 8 → 6 (Hidden Single)
14. Row 2 / Column 9 → 5 (Naked Single)
15. Row 3 / Column 6 → 6 (Hidden Single)
16. Row 1 / Column 8 → 4 (Hidden Single)
17. Row 1 / Column 6 → 5 (Naked Single)
18. Row 1 / Column 4 → 7 (Hidden Single)
19. Naked Pair: 8,9 in r14c3 => r36c3<>9
20. X-Wing: 9 r37 c14 => r46c1,r9c4<>9
21. Row 6 / Column 9 → 9 (Hidden Single)
22. Row 4 / Column 9 → 1 (Naked Single)
23. Row 4 / Column 1 → 8 (Naked Single)
24. Row 4 / Column 3 → 9 (Full House)
25. Row 5 / Column 9 → 7 (Naked Single)
26. Row 1 / Column 3 → 8 (Naked Single)
27. Row 3 / Column 9 → 2 (Naked Single)
28. Row 3 / Column 7 → 7 (Full House)
29. Row 5 / Column 8 → 5 (Naked Single)
30. Row 6 / Column 7 → 6 (Full House)
31. Row 9 / Column 8 → 7 (Full House)
32. Row 9 / Column 7 → 5 (Naked Single)
33. Row 7 / Column 7 → 2 (Full House)
34. Swordfish: 4 r258 c125 => r367c1<>4
35. Row 7 / Column 1 → 9 (Naked Single)
36. Row 3 / Column 1 → 5 (Naked Single)
37. Row 9 / Column 2 → 8 (Naked Single)
38. Row 3 / Column 3 → 4 (Naked Single)
39. Row 3 / Column 4 → 9 (Full House)
40. Row 6 / Column 1 → 1 (Naked Single)
41. Row 8 / Column 2 → 4 (Naked Single)
42. Row 9 / Column 4 → 3 (Naked Single)
43. Row 2 / Column 1 → 3 (Naked Single)
44. Row 5 / Column 1 → 4 (Full House)
45. Row 6 / Column 3 → 5 (Naked Single)
46. Row 5 / Column 2 → 3 (Full House)
47. Row 5 / Column 5 → 1 (Full House)
48. Row 1 / Column 5 → 2 (Naked Single)
49. Row 1 / Column 2 → 9 (Full House)
50. Row 2 / Column 2 → 2 (Full House)
51. Row 2 / Column 5 → 4 (Full House)
52. Row 8 / Column 5 → 6 (Naked Single)
53. Row 8 / Column 9 → 8 (Full House)
54. Row 9 / Column 5 → 9 (Full House)
55. Row 7 / Column 9 → 6 (Full House)
56. Row 6 / Column 4 → 4 (Naked Single)
57. Row 6 / Column 6 → 3 (Full House)
58. Row 7 / Column 4 → 8 (Full House)
59. Row 7 / Column 6 → 4 (Naked Single)
60. Row 9 / Column 6 → 1 (Full House)
61. Row 9 / Column 3 → 6 (Full House)
62. Row 7 / Column 3 → 3 (Full House)