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

This Sudoku Puzzle has 42 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Uniqueness Test 1, Give Up techniques.

Try To Solve This Puzzle

Solution Steps:

1. Row 5 / Column 9 → 3 (Naked Single)
2. Row 5 / Column 1 → 4 (Full House)
3. Row 3 / Column 8 → 5 (Naked Single)
4. Row 3 / Column 9 → 6 (Naked Single)
5. Row 4 / Column 4 → 4 (Hidden Single)
6. Row 1 / Column 1 → 1 (Hidden Single)
7. Row 4 / Column 7 → 7 (Hidden Single)
8. Row 2 / Column 4 → 1 (Hidden Single)
9. Row 9 / Column 9 → 1 (Hidden Single)
10. Row 2 / Column 2 → 5 (Hidden Single)
11. Row 8 / Column 9 → 5 (Hidden Single)
12. Row 7 / Column 6 → 5 (Hidden Single)
13. Row 7 / Column 2 → 2 (Hidden Single)
14. Row 4 / Column 6 → 6 (Hidden Single)
15. Row 2 / Column 6 → 9 (Naked Single)
16. Row 1 / Column 7 → 2 (Hidden Single)
17. Row 7 / Column 9 → 4 (Hidden Single)
18. Locked Candidates Type 1 (Pointing): 6 in b1 => r8c3<>6
19. Locked Candidates Type 1 (Pointing): 6 in b2 => r7c5<>6
20. Row 7 / Column 5 → 3 (Naked Single)
21. Locked Candidates Type 1 (Pointing): 3 in b5 => r6c23<>3
22. Row 6 / Column 2 → 9 (Naked Single)
23. Row 4 / Column 1 → 3 (Naked Single)
24. Row 9 / Column 2 → 7 (Naked Single)
25. Row 3 / Column 1 → 7 (Naked Single)
26. Row 3 / Column 4 → 3 (Full House)
27. Row 1 / Column 6 → 7 (Naked Single)
28. Row 6 / Column 6 → 3 (Full House)
29. Row 6 / Column 4 → 7 (Full House)
30. Uniqueness Test 1: 3/4 in r1c23,r8c23 => r1c3<>3, r1c3<>4
31. Row 1 / Column 3 → 6 (Naked Single)
32. Row 1 / Column 5 → 8 (Naked Single)
33. Row 2 / Column 5 → 6 (Full House)
34. Row 2 / Column 3 → 4 (Naked Single)
35. Row 1 / Column 2 → 3 (Full House)
36. Row 2 / Column 8 → 8 (Full House)
37. Row 8 / Column 2 → 4 (Full House)
38. Row 1 / Column 9 → 9 (Naked Single)
39. Row 1 / Column 8 → 4 (Full House)
40. Row 4 / Column 8 → 9 (Full House)
41. Row 8 / Column 3 → 3 (Naked Single)
42. Give Up: Don't know how to proceed!