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

This Sudoku Puzzle has 69 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Locked Candidates Type 2 (Claiming), Full House, Naked Pair, undefined techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 3 → 5 (Hidden Single)
2. Row 5 / Column 9 → 4 (Hidden Single)
3. Row 9 / Column 4 → 3 (Hidden Single)
4. Row 1 / Column 3 → 4 (Hidden Single)
5. Row 3 / Column 8 → 4 (Hidden Single)
6. Row 5 / Column 7 → 8 (Hidden Single)
7. Row 9 / Column 2 → 4 (Hidden Single)
8. Row 6 / Column 8 → 9 (Hidden Single)
9. Row 6 / Column 2 → 1 (Hidden Single)
10. Locked Candidates Type 1 (Pointing): 6 in b4 => r5c5<>6
11. Row 5 / Column 5 → 7 (Naked Single)
12. Row 6 / Column 3 → 7 (Hidden Single)
13. Row 4 / Column 2 → 2 (Hidden Single)
14. Locked Candidates Type 2 (Claiming): 6 in c5 => r7c46,r8c46<>6
15. Row 8 / Column 1 → 6 (Hidden Single)
16. Row 5 / Column 1 → 3 (Naked Single)
17. Row 5 / Column 2 → 9 (Naked Single)
18. Row 5 / Column 3 → 6 (Full House)
19. Row 8 / Column 2 → 7 (Naked Single)
20. Row 7 / Column 2 → 8 (Naked Single)
21. Row 2 / Column 2 → 3 (Full House)
22. Row 9 / Column 3 → 2 (Naked Single)
23. Row 2 / Column 7 → 7 (Naked Single)
24. Row 3 / Column 3 → 8 (Naked Single)
25. Row 7 / Column 3 → 9 (Full House)
26. Row 8 / Column 9 → 9 (Hidden Single)
27. Row 7 / Column 7 → 2 (Hidden Single)
28. Row 1 / Column 7 → 9 (Hidden Single)
29. Row 7 / Column 5 → 6 (Hidden Single)
30. Row 9 / Column 7 → 6 (Hidden Single)
31. Locked Candidates Type 1 (Pointing): 7 in b8 => r7c9<>7
32. Locked Candidates Type 2 (Claiming): 2 in c5 => r1c46,r3c6<>2
33. Naked Pair: 1,5 in r7c9,r8c8 => r9c89<>1, r9c89<>5
34. Naked Pair: 1,5 in r7c19 => r7c4<>5, r7c6<>1
35. Naked Pair: 6,8 in r24c6 => r1c6<>8
36. XYZ-Wing: 1/3/5 in r3c79,r7c9 => r1c9<>1
37. Locked Candidates Type 1 (Pointing): 1 in b3 => r3c56<>1
38. XY-Wing: 7/8/3 in r1c49,r3c6 => r1c6,r3c79<>3
39. Row 3 / Column 7 → 1 (Naked Single)
40. Row 4 / Column 7 → 3 (Full House)
41. Row 3 / Column 9 → 5 (Naked Single)
42. Row 2 / Column 8 → 8 (Naked Single)
43. Row 1 / Column 9 → 3 (Full House)
44. Row 3 / Column 5 → 2 (Naked Single)
45. Row 7 / Column 9 → 1 (Naked Single)
46. Row 2 / Column 6 → 6 (Naked Single)
47. Row 2 / Column 4 → 5 (Full House)
48. Row 9 / Column 8 → 7 (Naked Single)
49. Row 1 / Column 5 → 1 (Naked Single)
50. Row 9 / Column 5 → 5 (Full House)
51. Row 3 / Column 1 → 7 (Naked Single)
52. Row 1 / Column 1 → 2 (Full House)
53. Row 3 / Column 6 → 3 (Full House)
54. Row 4 / Column 9 → 7 (Naked Single)
55. Row 4 / Column 8 → 1 (Full House)
56. Row 8 / Column 8 → 5 (Full House)
57. Row 9 / Column 9 → 8 (Full House)
58. Row 9 / Column 1 → 1 (Full House)
59. Row 7 / Column 1 → 5 (Full House)
60. Row 4 / Column 6 → 8 (Naked Single)
61. Row 4 / Column 4 → 6 (Full House)
62. Row 8 / Column 4 → 2 (Naked Single)
63. Row 8 / Column 6 → 1 (Full House)
64. Row 1 / Column 6 → 7 (Naked Single)
65. Row 1 / Column 4 → 8 (Full House)
66. Row 6 / Column 4 → 4 (Naked Single)
67. Row 6 / Column 6 → 2 (Full House)
68. Row 7 / Column 6 → 4 (Full House)
69. Row 7 / Column 4 → 7 (Full House)