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

This Sudoku Puzzle has 48 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined, Skyscraper, Remote Pair, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 4 → 4 (Hidden Single)
2. Row 8 / Column 5 → 3 (Naked Single)
3. Row 2 / Column 5 → 4 (Hidden Single)
4. Row 8 / Column 4 → 5 (Hidden Single)
5. Locked Candidates Type 1 (Pointing): 2 in b6 => r6c4<>2
6. Row 5 / Column 4 → 2 (Hidden Single)
7. Row 3 / Column 4 → 6 (Hidden Single)
8. Locked Candidates Type 2 (Claiming): 1 in r2 => r3c9<>1
9. Naked Pair: 1,2 in r26c8 => r8c8<>1, r89c8<>2
10. Row 8 / Column 6 → 2 (Hidden Single)
11. Row 8 / Column 1 → 8 (Hidden Single)
12. Locked Candidates Type 1 (Pointing): 1 in b9 => r7c1<>1
13. X-Wing: 3 r34 c69 => r2c9<>3
14. Skyscraper: 7 in r1c5,r7c6 (connected by r17c1) => r3c6,r9c5<>7
15. Row 9 / Column 5 → 6 (Naked Single)
16. Row 5 / Column 6 → 6 (Hidden Single)
17. Remote Pair: 1/7 r1c1 -7- r1c5 -1- r5c5 -7- r5c2 => r6c1<>1, r6c1<>7
18. Row 6 / Column 1 → 5 (Naked Single)
19. Row 7 / Column 1 → 7 (Naked Single)
20. Row 1 / Column 1 → 1 (Full House)
21. Row 1 / Column 5 → 7 (Full House)
22. Row 3 / Column 3 → 7 (Full House)
23. Row 5 / Column 5 → 1 (Full House)
24. Row 5 / Column 2 → 7 (Full House)
25. Row 6 / Column 3 → 1 (Full House)
26. Row 7 / Column 6 → 8 (Naked Single)
27. Row 9 / Column 6 → 7 (Full House)
28. Row 9 / Column 2 → 4 (Naked Single)
29. Row 8 / Column 2 → 1 (Full House)
30. Row 2 / Column 4 → 3 (Naked Single)
31. Row 3 / Column 6 → 1 (Full House)
32. Row 3 / Column 9 → 3 (Full House)
33. Row 4 / Column 6 → 3 (Full House)
34. Row 6 / Column 4 → 7 (Full House)
35. Row 4 / Column 9 → 1 (Full House)
36. Row 6 / Column 8 → 2 (Naked Single)
37. Row 6 / Column 7 → 3 (Full House)
38. Row 8 / Column 3 → 9 (Naked Single)
39. Row 8 / Column 8 → 4 (Full House)
40. Row 9 / Column 3 → 5 (Full House)
41. Row 7 / Column 7 → 1 (Naked Single)
42. Row 7 / Column 9 → 5 (Full House)
43. Row 9 / Column 8 → 9 (Naked Single)
44. Row 2 / Column 8 → 1 (Full House)
45. Row 9 / Column 9 → 2 (Naked Single)
46. Row 2 / Column 9 → 7 (Full House)
47. Row 2 / Column 7 → 2 (Full House)
48. Row 9 / Column 7 → 8 (Full House)