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

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

Try To Solve This Puzzle

Solution Steps:

1. Row 5 / Column 8 → 5 (Hidden Single)
2. Row 5 / Column 6 → 9 (Hidden Single)
3. Row 8 / Column 5 → 4 (Hidden Single)
4. Row 4 / Column 9 → 4 (Hidden Single)
5. Row 2 / Column 5 → 5 (Hidden Single)
6. Row 7 / Column 4 → 5 (Hidden Single)
7. Locked Pair: 6,8 in r8c79 => r7c78,r8c168,r9c8<>6, r8c138,r9c8<>8
8. Locked Candidates Type 1 (Pointing): 9 in b4 => r23c1<>9
9. Locked Candidates Type 1 (Pointing): 8 in b5 => r13c4<>8
10. Locked Pair: 1,3 in r3c45 => r1c46,r23c6,r3c128<>1, r1c46,r3c16<>3
11. Row 1 / Column 1 → 3 (Hidden Single)
12. Row 9 / Column 6 → 3 (Hidden Single)
13. Row 1 / Column 3 → 5 (Hidden Single)
14. Row 8 / Column 1 → 5 (Hidden Single)
15. Row 7 / Column 3 → 4 (Hidden Single)
16. Row 7 / Column 7 → 9 (Naked Single)
17. Row 1 / Column 7 → 4 (Hidden Single)
18. Row 9 / Column 8 → 4 (Hidden Single)
19. Row 3 / Column 2 → 4 (Hidden Single)
20. Row 3 / Column 8 → 9 (Hidden Single)
21. Row 2 / Column 2 → 9 (Hidden Single)
22. Row 6 / Column 9 → 9 (Hidden Single)
23. Row 4 / Column 1 → 9 (Hidden Single)
24. Row 7 / Column 2 → 7 (Hidden Single)
25. Row 7 / Column 8 → 2 (Naked Single)
26. Row 8 / Column 8 → 7 (Naked Single)
27. Locked Candidates Type 1 (Pointing): 6 in b6 => r6c45<>6
28. Row 5 / Column 5 → 6 (Hidden Single)
29. Locked Candidates Type 2 (Claiming): 2 in c5 => r6c4<>2
30. X-Wing: 2 c24 r19 => r1c6,r9c1<>2
31. W-Wing: 8/1 in r4c8,r5c2 connected by 1 in r1c28 => r4c3<>8
32. Locked Candidates Type 2 (Claiming): 8 in r4 => r6c78<>8
33. Naked Pair: 1,2 in r48c3 => r26c3<>1, r26c3<>2
34. Naked Pair: 7,8 in r2c3,r3c1 => r1c2,r2c1<>8, r2c1<>7
35. W-Wing: 1/2 in r1c2,r4c3 connected by 2 in r26c1 => r5c2<>1
36. Row 5 / Column 2 → 8 (Naked Single)
37. Row 5 / Column 4 → 1 (Full House)
38. Row 6 / Column 3 → 7 (Naked Single)
39. Row 9 / Column 2 → 2 (Naked Single)
40. Row 1 / Column 2 → 1 (Full House)
41. Row 3 / Column 4 → 3 (Naked Single)
42. Row 2 / Column 3 → 8 (Naked Single)
43. Row 8 / Column 3 → 1 (Naked Single)
44. Row 4 / Column 3 → 2 (Full House)
45. Row 6 / Column 1 → 1 (Full House)
46. Row 9 / Column 4 → 6 (Naked Single)
47. Row 9 / Column 1 → 8 (Full House)
48. Row 7 / Column 1 → 6 (Full House)
49. Row 7 / Column 6 → 1 (Full House)
50. Row 8 / Column 6 → 2 (Full House)
51. Row 2 / Column 1 → 2 (Naked Single)
52. Row 3 / Column 1 → 7 (Full House)
53. Row 3 / Column 5 → 1 (Naked Single)
54. Row 3 / Column 6 → 8 (Full House)
55. Row 6 / Column 4 → 8 (Naked Single)
56. Row 1 / Column 4 → 2 (Full House)
57. Row 2 / Column 9 → 6 (Naked Single)
58. Row 8 / Column 9 → 8 (Full House)
59. Row 8 / Column 7 → 6 (Full House)
60. Row 4 / Column 5 → 3 (Naked Single)
61. Row 6 / Column 5 → 2 (Full House)
62. Row 6 / Column 8 → 6 (Naked Single)
63. Row 6 / Column 7 → 3 (Full House)
64. Row 1 / Column 6 → 6 (Naked Single)
65. Row 1 / Column 8 → 8 (Full House)
66. Row 2 / Column 6 → 7 (Full House)
67. Row 2 / Column 7 → 1 (Full House)
68. Row 4 / Column 8 → 1 (Full House)
69. Row 4 / Column 7 → 8 (Full House)