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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 7 → 3 (Naked Single)
2. Row 1 / Column 9 → 7 (Naked Single)
3. Row 1 / Column 1 → 5 (Naked Single)
4. Row 3 / Column 8 → 4 (Naked Single)
5. Row 8 / Column 3 → 5 (Hidden Single)
6. Locked Candidates Type 1 (Pointing): 2 in b2 => r4c6<>2
7. Locked Candidates Type 1 (Pointing): 9 in b3 => r2c123<>9
8. Locked Candidates Type 1 (Pointing): 2 in b8 => r6c4<>2
9. X-Wing: 1 r14 c26 => r3c2<>1
10. W-Wing: 8/7 in r2c3,r5c4 connected by 7 in r2c6,r3c4 => r5c3<>8
11. W-Wing: 7/9 in r3c2,r9c3 connected by 9 in r5c23 => r23c3<>7
12. Row 2 / Column 3 → 8 (Naked Single)
13. W-Wing: 7/1 in r3c4,r4c2 connected by 1 in r1c26 => r3c2<>7
14. Row 3 / Column 2 → 9 (Naked Single)
15. Row 5 / Column 3 → 9 (Hidden Single)
16. Row 9 / Column 3 → 7 (Naked Single)
17. Row 8 / Column 8 → 7 (Hidden Single)
18. Locked Candidates Type 2 (Claiming): 9 in r7 => r8c79,r9c9<>9
19. XY-Wing: 6/8/5 in r48c7,r7c8 => r5c8,r7c7<>5
20. Row 7 / Column 8 → 5 (Hidden Single)
21. Locked Candidates Type 2 (Claiming): 6 in c8 => r5c7,r6c9<>6
22. Naked Triple: 3,6,7 in r5c268 => r5c4<>7
23. Row 5 / Column 4 → 8 (Naked Single)
24. Row 6 / Column 4 → 1 (Naked Single)
25. Row 3 / Column 4 → 7 (Naked Single)
26. Row 6 / Column 3 → 3 (Naked Single)
27. Row 3 / Column 3 → 1 (Full House)
28. Row 3 / Column 1 → 3 (Full House)
29. Row 2 / Column 6 → 2 (Naked Single)
30. Row 1 / Column 6 → 1 (Full House)
31. Row 1 / Column 2 → 2 (Full House)
32. Row 4 / Column 2 → 1 (Hidden Single)
33. Uniqueness Test 2: 6/9 in r2c79,r7c79 => r7c2,r9c9<>4
34. Row 7 / Column 2 → 6 (Naked Single)
35. Row 5 / Column 2 → 7 (Naked Single)
36. Row 2 / Column 2 → 4 (Full House)
37. Row 2 / Column 1 → 7 (Full House)
38. Row 8 / Column 1 → 9 (Naked Single)
39. Row 9 / Column 1 → 4 (Full House)
40. Row 4 / Column 1 → 8 (Naked Single)
41. Row 6 / Column 1 → 6 (Full House)
42. Row 5 / Column 6 → 3 (Naked Single)
43. Row 4 / Column 6 → 7 (Full House)
44. Row 8 / Column 4 → 2 (Naked Single)
45. Row 9 / Column 4 → 9 (Full House)
46. Row 4 / Column 7 → 5 (Naked Single)
47. Row 6 / Column 8 → 2 (Naked Single)
48. Row 5 / Column 8 → 6 (Naked Single)
49. Row 9 / Column 8 → 3 (Full House)
50. Row 9 / Column 9 → 2 (Full House)
51. Row 4 / Column 5 → 2 (Naked Single)
52. Row 4 / Column 9 → 3 (Full House)
53. Row 5 / Column 7 → 4 (Naked Single)
54. Row 5 / Column 5 → 5 (Full House)
55. Row 6 / Column 5 → 4 (Full House)
56. Row 6 / Column 9 → 8 (Full House)
57. Row 7 / Column 7 → 9 (Naked Single)
58. Row 7 / Column 9 → 4 (Full House)
59. Row 8 / Column 9 → 6 (Naked Single)
60. Row 2 / Column 9 → 9 (Full House)
61. Row 2 / Column 7 → 6 (Full House)
62. Row 8 / Column 7 → 8 (Full House)