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

This Sudoku Puzzle has 54 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Pair, Hidden Single, Naked Single, Full House, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

1. Locked Candidates Type 1 (Pointing): 1 in b6 => r4c5<>1
2. Locked Candidates Type 1 (Pointing): 4 in b6 => r7c8<>4
3. Hidden Pair: 7,9 in r1c56 => r1c5<>2, r1c56<>5, r1c56<>6, r1c5<>8
4. Row 6 / Column 6 → 5 (Hidden Single)
5. Row 6 / Column 3 → 8 (Naked Single)
6. Row 5 / Column 2 → 4 (Naked Single)
7. Row 6 / Column 7 → 6 (Naked Single)
8. Row 6 / Column 8 → 4 (Naked Single)
9. Row 6 / Column 5 → 3 (Full House)
10. Row 3 / Column 5 → 5 (Hidden Single)
11. Row 1 / Column 1 → 4 (Hidden Single)
12. Locked Candidates Type 1 (Pointing): 6 in b1 => r78c2<>6
13. Locked Candidates Type 1 (Pointing): 6 in b3 => r79c9<>6
14. Locked Candidates Type 1 (Pointing): 8 in b6 => r4c45<>8
15. X-Wing: 2 c37 r19 => r1c29,r9c459<>2
16. Row 9 / Column 9 → 4 (Naked Single)
17. Row 9 / Column 4 → 6 (Naked Single)
18. Row 4 / Column 4 → 4 (Naked Single)
19. Row 4 / Column 5 → 6 (Naked Single)
20. Row 7 / Column 5 → 4 (Hidden Single)
21. Row 8 / Column 8 → 6 (Hidden Single)
22. Row 7 / Column 8 → 8 (Naked Single)
23. Row 4 / Column 8 → 1 (Full House)
24. Row 4 / Column 7 → 8 (Full House)
25. Row 7 / Column 9 → 2 (Naked Single)
26. Row 9 / Column 7 → 1 (Full House)
27. Row 1 / Column 7 → 2 (Full House)
28. Row 9 / Column 5 → 7 (Naked Single)
29. Row 1 / Column 3 → 5 (Naked Single)
30. Row 9 / Column 3 → 2 (Full House)
31. Row 9 / Column 1 → 5 (Full House)
32. Row 1 / Column 5 → 9 (Naked Single)
33. Row 7 / Column 6 → 9 (Naked Single)
34. Row 8 / Column 2 → 9 (Naked Single)
35. Row 4 / Column 1 → 7 (Naked Single)
36. Row 4 / Column 2 → 5 (Full House)
37. Row 7 / Column 1 → 6 (Full House)
38. Row 7 / Column 2 → 7 (Full House)
39. Row 1 / Column 6 → 7 (Naked Single)
40. Row 5 / Column 6 → 1 (Naked Single)
41. Row 5 / Column 5 → 8 (Naked Single)
42. Row 5 / Column 4 → 9 (Full House)
43. Row 8 / Column 6 → 3 (Naked Single)
44. Row 2 / Column 6 → 6 (Full House)
45. Row 2 / Column 5 → 2 (Naked Single)
46. Row 8 / Column 5 → 1 (Full House)
47. Row 8 / Column 4 → 2 (Full House)
48. Row 2 / Column 2 → 8 (Naked Single)
49. Row 2 / Column 4 → 3 (Full House)
50. Row 3 / Column 4 → 8 (Full House)
51. Row 1 / Column 2 → 6 (Naked Single)
52. Row 1 / Column 9 → 8 (Full House)
53. Row 3 / Column 9 → 6 (Full House)
54. Row 3 / Column 2 → 2 (Full House)