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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), undefined, Naked Pair, Skyscraper, Hidden Rectangle, Simple Colors Trap, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 3 → 4 (Hidden Single)
2. Row 4 / Column 9 → 2 (Hidden Single)
3. Row 3 / Column 2 → 8 (Hidden Single)
4. Row 9 / Column 3 → 2 (Hidden Single)
5. Row 3 / Column 3 → 6 (Naked Single)
6. Row 6 / Column 4 → 3 (Hidden Single)
7. Row 7 / Column 9 → 3 (Hidden Single)
8. Row 7 / Column 3 → 5 (Hidden Single)
9. Row 8 / Column 7 → 4 (Hidden Single)
10. Row 9 / Column 9 → 6 (Naked Single)
11. Row 2 / Column 8 → 5 (Hidden Single)
12. Row 4 / Column 1 → 4 (Hidden Single)
13. Row 6 / Column 1 → 7 (Naked Single)
14. Row 6 / Column 9 → 4 (Hidden Single)
15. Row 9 / Column 4 → 4 (Hidden Single)
16. Row 5 / Column 5 → 7 (Hidden Single)
17. Row 4 / Column 5 → 5 (Hidden Single)
18. Row 4 / Column 6 → 8 (Hidden Single)
19. Row 8 / Column 5 → 8 (Hidden Single)
20. Locked Candidates Type 1 (Pointing): 1 in b5 => r6c8<>1
21. Locked Candidates Type 1 (Pointing): 1 in b7 => r8c46<>1
22. 2-String Kite: 9 in r4c4,r8c3 (connected by r4c2,r5c3) => r8c4<>9
23. 2-String Kite: 9 in r5c3,r9c8 (connected by r8c3,r9c2) => r5c8<>9
24. 2-String Kite: 9 in r5c7,r9c2 (connected by r7c7,r9c8) => r5c2<>9
25. XY-Wing: 1/5/6 in r1c28,r5c2 => r5c8<>6
26. Naked Pair: 1,8 in r5c89 => r5c7<>8
27. Skyscraper: 6 in r1c8,r2c5 (connected by r6c58) => r1c6,r2c7<>6
28. Hidden Rectangle: 6/7 in r2c46,r8c46 => r2c6<>6
29. Simple Colors Trap: 9 (r4c2,r5c7,r7c4,r8c3) / (r4c4,r5c3,r6c8,r7c7) => r7c58<>9
30. Row 7 / Column 5 → 1 (Naked Single)
31. Row 6 / Column 6 → 1 (Hidden Single)
32. Row 1 / Column 6 → 3 (Naked Single)
33. Row 2 / Column 6 → 7 (Naked Single)
34. Row 3 / Column 6 → 9 (Naked Single)
35. Row 8 / Column 6 → 6 (Full House)
36. Row 3 / Column 5 → 2 (Naked Single)
37. Row 8 / Column 4 → 7 (Naked Single)
38. Row 7 / Column 4 → 9 (Full House)
39. Row 2 / Column 5 → 6 (Naked Single)
40. Row 2 / Column 4 → 1 (Full House)
41. Row 4 / Column 4 → 6 (Full House)
42. Row 6 / Column 5 → 9 (Full House)
43. Row 4 / Column 2 → 9 (Full House)
44. Row 6 / Column 8 → 6 (Full House)
45. Row 3 / Column 1 → 1 (Naked Single)
46. Row 3 / Column 7 → 3 (Full House)
47. Row 7 / Column 7 → 8 (Naked Single)
48. Row 7 / Column 8 → 7 (Full House)
49. Row 9 / Column 8 → 9 (Full House)
50. Row 9 / Column 2 → 7 (Full House)
51. Row 2 / Column 9 → 8 (Naked Single)
52. Row 2 / Column 7 → 2 (Full House)
53. Row 5 / Column 9 → 1 (Full House)
54. Row 5 / Column 3 → 3 (Naked Single)
55. Row 8 / Column 3 → 9 (Full House)
56. Row 8 / Column 2 → 1 (Naked Single)
57. Row 8 / Column 1 → 3 (Full House)
58. Row 1 / Column 8 → 1 (Naked Single)
59. Row 1 / Column 7 → 6 (Full House)
60. Row 5 / Column 7 → 9 (Full House)
61. Row 5 / Column 8 → 8 (Full House)
62. Row 1 / Column 2 → 5 (Naked Single)
63. Row 1 / Column 1 → 2 (Full House)
64. Row 5 / Column 1 → 5 (Full House)
65. Row 5 / Column 2 → 6 (Full House)