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

This Sudoku Puzzle has 46 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Bivalue Universal Grave + 1, Give Up techniques.

Try To Solve This Puzzle

Solution Steps:

1. Row 7 / Column 4 → 6 (Naked Single)
2. Row 4 / Column 9 → 7 (Naked Single)
3. Row 8 / Column 1 → 6 (Naked Single)
4. Row 1 / Column 5 → 5 (Naked Single)
5. Row 6 / Column 5 → 1 (Naked Single)
6. Row 8 / Column 4 → 9 (Naked Single)
7. Row 8 / Column 2 → 4 (Naked Single)
8. Row 8 / Column 3 → 2 (Naked Single)
9. Row 5 / Column 5 → 9 (Naked Single)
10. Row 2 / Column 4 → 7 (Naked Single)
11. Row 8 / Column 8 → 3 (Naked Single)
12. Row 8 / Column 7 → 5 (Full House)
13. Row 3 / Column 5 → 2 (Naked Single)
14. Row 7 / Column 5 → 4 (Full House)
15. Row 6 / Column 8 → 6 (Naked Single)
16. Row 1 / Column 8 → 8 (Naked Single)
17. Row 2 / Column 8 → 2 (Naked Single)
18. Row 6 / Column 7 → 3 (Naked Single)
19. Row 6 / Column 3 → 7 (Full House)
20. Row 5 / Column 8 → 1 (Naked Single)
21. Row 7 / Column 8 → 7 (Full House)
22. Row 4 / Column 7 → 8 (Naked Single)
23. Row 7 / Column 3 → 1 (Naked Single)
24. Row 7 / Column 6 → 2 (Full House)
25. Row 9 / Column 2 → 7 (Full House)
26. Row 9 / Column 6 → 1 (Full House)
27. Row 5 / Column 1 → 3 (Naked Single)
28. Row 1 / Column 1 → 1 (Full House)
29. Row 4 / Column 4 → 3 (Naked Single)
30. Row 5 / Column 4 → 8 (Full House)
31. Row 4 / Column 6 → 5 (Naked Single)
32. Row 4 / Column 2 → 1 (Full House)
33. Row 5 / Column 6 → 7 (Full House)
34. Row 3 / Column 2 → 8 (Hidden Single)
35. Locked Candidates Type 1 (Pointing): 6 in b3 => r3c36<>6
36. Bivalue Universal Grave + 1 => r2c3<>5, r2c3<>9
37. Row 2 / Column 3 → 6 (Naked Single)
38. Row 1 / Column 3 → 3 (Naked Single)
39. Row 1 / Column 6 → 6 (Full House)
40. Row 2 / Column 2 → 5 (Naked Single)
41. Row 2 / Column 6 → 9 (Full House)
42. Row 3 / Column 3 → 9 (Full House)
43. Row 5 / Column 3 → 5 (Full House)
44. Row 5 / Column 2 → 6 (Full House)
45. Row 3 / Column 6 → 3 (Full House)
46. Give Up: Don't know how to proceed!