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

This Sudoku Puzzle has 46 steps and it is solved using Naked Single, Locked Candidates Type 1 (Pointing), Naked Pair, Turbot Fish, Empty Rectangle, Full House, Skyscraper, Hidden Single techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 8 → 8 (Naked Single)
2. Locked Candidates Type 1 (Pointing): 1 in b3 => r6c7<>1
3. Locked Candidates Type 1 (Pointing): 5 in b3 => r6c7<>5
4. Naked Pair: 1,5 in r3c27 => r3c6<>5
5. Turbot Fish: 5 r2c6 =5= r1c4 -5- r4c4 =5= r4c2 => r2c2<>5
6. Empty Rectangle: 5 in b1 (r4c24) => r1c4<>5
7. Row 1 / Column 4 → 3 (Naked Single)
8. Row 2 / Column 5 → 4 (Naked Single)
9. Row 2 / Column 6 → 5 (Naked Single)
10. Row 2 / Column 7 → 1 (Naked Single)
11. Row 2 / Column 2 → 3 (Full House)
12. Row 3 / Column 7 → 5 (Full House)
13. Row 3 / Column 2 → 1 (Naked Single)
14. Skyscraper: 4 in r4c4,r9c6 (connected by r49c2) => r56c6,r8c4<>4
15. Row 8 / Column 4 → 8 (Naked Single)
16. Row 9 / Column 6 → 4 (Hidden Single)
17. Row 9 / Column 2 → 7 (Naked Single)
18. Row 1 / Column 2 → 5 (Naked Single)
19. Row 1 / Column 1 → 7 (Full House)
20. Row 4 / Column 2 → 4 (Full House)
21. Row 4 / Column 4 → 5 (Full House)
22. Row 8 / Column 3 → 3 (Naked Single)
23. Row 9 / Column 5 → 3 (Naked Single)
24. Row 9 / Column 3 → 8 (Full House)
25. Row 5 / Column 3 → 7 (Full House)
26. Row 7 / Column 1 → 4 (Full House)
27. Row 7 / Column 5 → 7 (Full House)
28. Row 8 / Column 7 → 4 (Naked Single)
29. Row 6 / Column 7 → 3 (Full House)
30. Row 5 / Column 6 → 6 (Naked Single)
31. Row 7 / Column 9 → 1 (Naked Single)
32. Row 7 / Column 8 → 3 (Full House)
33. Row 8 / Column 9 → 6 (Naked Single)
34. Row 8 / Column 8 → 7 (Full House)
35. Row 6 / Column 1 → 5 (Naked Single)
36. Row 5 / Column 1 → 3 (Full House)
37. Row 3 / Column 6 → 8 (Naked Single)
38. Row 3 / Column 5 → 6 (Full House)
39. Row 6 / Column 5 → 8 (Full House)
40. Row 6 / Column 6 → 7 (Full House)
41. Row 5 / Column 8 → 1 (Naked Single)
42. Row 6 / Column 8 → 6 (Full House)
43. Row 6 / Column 9 → 4 (Naked Single)
44. Row 5 / Column 9 → 5 (Full House)
45. Row 5 / Column 4 → 4 (Full House)
46. Row 6 / Column 4 → 1 (Full House)