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

This Sudoku Puzzle has 59 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Hidden Pair, undefined, Swordfish, Naked Single, Locked Candidates Type 2 (Claiming), Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 8 / Column 7 → 1 (Hidden Single)
2. Locked Candidates Type 1 (Pointing): 2 in b9 => r45c9<>2
3. Hidden Pair: 3,7 in r7c45 => r7c5<>6, r7c5<>9
4. X-Wing: 1 c14 r26 => r2c3,r6c25<>1
5. Swordfish: 5 r349 c268 => r1c28,r58c6<>5
6. Row 1 / Column 2 → 2 (Naked Single)
7. Locked Candidates Type 2 (Claiming): 2 in r4 => r5c46,r6c45<>2
8. Row 8 / Column 4 → 2 (Hidden Single)
9. Row 9 / Column 9 → 2 (Hidden Single)
10. Row 8 / Column 1 → 5 (Hidden Single)
11. Row 5 / Column 4 → 5 (Hidden Single)
12. Row 9 / Column 6 → 5 (Hidden Single)
13. Row 2 / Column 9 → 8 (Hidden Single)
14. Row 1 / Column 7 → 5 (Hidden Single)
15. Row 3 / Column 2 → 5 (Hidden Single)
16. Row 4 / Column 8 → 5 (Hidden Single)
17. Row 1 / Column 4 → 8 (Hidden Single)
18. Row 5 / Column 6 → 8 (Hidden Single)
19. Row 1 / Column 8 → 6 (Hidden Single)
20. Row 6 / Column 8 → 4 (Naked Single)
21. Row 3 / Column 8 → 7 (Naked Single)
22. Row 7 / Column 2 → 4 (Hidden Single)
23. Row 7 / Column 7 → 6 (Naked Single)
24. Row 7 / Column 1 → 9 (Naked Single)
25. Row 8 / Column 9 → 4 (Naked Single)
26. Row 1 / Column 1 → 7 (Naked Single)
27. Row 1 / Column 5 → 9 (Full House)
28. Row 7 / Column 8 → 8 (Naked Single)
29. Row 9 / Column 8 → 9 (Full House)
30. Row 8 / Column 3 → 6 (Naked Single)
31. Row 8 / Column 6 → 9 (Full House)
32. Row 3 / Column 9 → 3 (Naked Single)
33. Row 2 / Column 7 → 4 (Full House)
34. Row 2 / Column 1 → 1 (Naked Single)
35. Row 2 / Column 6 → 3 (Naked Single)
36. Row 9 / Column 5 → 6 (Naked Single)
37. Row 5 / Column 3 → 7 (Naked Single)
38. Row 3 / Column 6 → 2 (Naked Single)
39. Row 4 / Column 6 → 6 (Full House)
40. Row 2 / Column 3 → 9 (Naked Single)
41. Row 3 / Column 3 → 4 (Full House)
42. Row 2 / Column 4 → 7 (Full House)
43. Row 3 / Column 5 → 1 (Full House)
44. Row 6 / Column 5 → 3 (Naked Single)
45. Row 4 / Column 3 → 1 (Naked Single)
46. Row 9 / Column 3 → 8 (Full House)
47. Row 9 / Column 2 → 1 (Full House)
48. Row 5 / Column 9 → 6 (Naked Single)
49. Row 4 / Column 9 → 7 (Full House)
50. Row 7 / Column 4 → 3 (Naked Single)
51. Row 6 / Column 4 → 1 (Full House)
52. Row 4 / Column 5 → 2 (Full House)
53. Row 7 / Column 5 → 7 (Full House)
54. Row 4 / Column 2 → 3 (Full House)
55. Row 6 / Column 2 → 8 (Full House)
56. Row 6 / Column 7 → 2 (Naked Single)
57. Row 5 / Column 7 → 3 (Full House)
58. Row 5 / Column 1 → 2 (Full House)
59. Row 6 / Column 1 → 6 (Full House)