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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 5 / Column 2 → 1 (Naked Single)
2. Row 5 / Column 4 → 4 (Naked Single)
3. Row 7 / Column 2 → 4 (Naked Single)
4. Row 2 / Column 2 → 9 (Naked Single)
5. Row 9 / Column 2 → 6 (Naked Single)
6. Row 1 / Column 1 → 1 (Naked Single)
7. Row 2 / Column 3 → 4 (Full House)
8. Row 1 / Column 4 → 8 (Hidden Single)
9. Row 1 / Column 5 → 6 (Hidden Single)
10. Row 7 / Column 9 → 7 (Hidden Single)
11. Row 9 / Column 3 → 1 (Hidden Single)
12. Row 9 / Column 5 → 4 (Hidden Single)
13. Row 1 / Column 7 → 9 (Hidden Single)
14. Row 4 / Column 1 → 9 (Hidden Single)
15. Locked Candidates Type 1 (Pointing): 3 in b2 => r2c7<>3
16. Locked Candidates Type 1 (Pointing): 1 in b3 => r46c7<>1
17. Locked Candidates Type 1 (Pointing): 8 in b6 => r6c3<>8
18. Locked Candidates Type 1 (Pointing): 2 in b7 => r8c4679<>2
19. Locked Candidates Type 1 (Pointing): 8 in b7 => r8c67<>8
20. Locked Candidates Type 2 (Claiming): 2 in c9 => r4c78<>2
21. Naked Pair: 4,6 in r48c7 => r36c7<>6
22. Row 3 / Column 8 → 6 (Hidden Single)
23. Locked Candidates Type 1 (Pointing): 2 in b3 => r7c7<>2
24. XY-Wing: 1/2/3 in r2c5,r39c4 => r2c4,r7c5<>3
25. Row 7 / Column 5 → 1 (Naked Single)
26. Row 2 / Column 5 → 3 (Full House)
27. Row 9 / Column 4 → 3 (Hidden Single)
28. Locked Candidates Type 1 (Pointing): 2 in b8 => r2c6<>2
29. Uniqueness Test 1: 1/2 in r2c47,r3c47 => r2c4<>1, r2c4<>2
30. Row 2 / Column 4 → 5 (Naked Single)
31. Row 2 / Column 6 → 1 (Naked Single)
32. Row 2 / Column 7 → 2 (Full House)
33. Row 3 / Column 4 → 2 (Full House)
34. Row 3 / Column 7 → 1 (Full House)
35. Row 8 / Column 4 → 9 (Naked Single)
36. Row 6 / Column 6 → 9 (Naked Single)
37. Row 8 / Column 6 → 5 (Naked Single)
38. Uniqueness Test 1: 4/6 in r4c79,r8c79 => r4c9<>4, r4c9<>6
39. Uniqueness Test 1: 2/8 in r5c13,r8c13 => r5c3<>2, r5c3<>8
40. Row 5 / Column 3 → 3 (Naked Single)
41. Row 5 / Column 9 → 2 (Naked Single)
42. Row 5 / Column 1 → 8 (Full House)
43. Row 8 / Column 1 → 2 (Full House)
44. Row 8 / Column 3 → 8 (Full House)
45. Row 6 / Column 3 → 6 (Naked Single)
46. Row 4 / Column 3 → 2 (Full House)
47. Row 4 / Column 9 → 1 (Naked Single)
48. Row 4 / Column 4 → 7 (Naked Single)
49. Row 6 / Column 4 → 1 (Full House)
50. Row 6 / Column 9 → 3 (Naked Single)
51. Row 4 / Column 2 → 5 (Naked Single)
52. Row 6 / Column 2 → 7 (Full House)
53. Row 1 / Column 9 → 4 (Naked Single)
54. Row 1 / Column 8 → 3 (Full House)
55. Row 8 / Column 9 → 6 (Full House)
56. Row 8 / Column 7 → 4 (Full House)
57. Row 6 / Column 7 → 8 (Naked Single)
58. Row 6 / Column 8 → 5 (Full House)
59. Row 4 / Column 8 → 4 (Naked Single)
60. Row 4 / Column 7 → 6 (Full House)
61. Row 7 / Column 7 → 3 (Full House)
62. Give Up: Don't know how to proceed!