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

This Sudoku Puzzle has 55 steps and it is solved using Hidden Single, Locked Triple, Naked Single, Full House, Locked Pair, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Hidden Pair techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 5 → 9 (Hidden Single)
2. Locked Triple: 1,2,5 in r789c3 => r16c3,r7c12,r8c12<>1, r1c3,r78c1<>5, r8c1<>2
3. Row 1 / Column 1 → 5 (Hidden Single)
4. Row 7 / Column 3 → 5 (Hidden Single)
5. Row 1 / Column 2 → 6 (Hidden Single)
6. Row 7 / Column 2 → 3 (Naked Single)
7. Row 7 / Column 1 → 6 (Naked Single)
8. Row 7 / Column 4 → 1 (Full House)
9. Locked Pair: 4,5 in r89c5 => r1c5,r89c4<>4
10. Row 9 / Column 5 → 4 (Hidden Single)
11. Row 8 / Column 5 → 5 (Naked Single)
12. Row 9 / Column 9 → 5 (Hidden Single)
13. Locked Candidates Type 1 (Pointing): 8 in b2 => r1c7<>8
14. Locked Candidates Type 1 (Pointing): 8 in b7 => r8c89<>8
15. Locked Candidates Type 2 (Claiming): 9 in c7 => r2c8<>9
16. Locked Candidates Type 2 (Claiming): 8 in c9 => r5c8<>8
17. Hidden Pair: 2,3 in r45c1 => r45c1<>1, r4c1<>4, r45c1<>7
18. Row 4 / Column 6 → 4 (Hidden Single)
19. Row 1 / Column 4 → 4 (Hidden Single)
20. Row 5 / Column 5 → 1 (Hidden Single)
21. Row 1 / Column 5 → 8 (Full House)
22. Row 5 / Column 2 → 9 (Naked Single)
23. Row 6 / Column 3 → 7 (Naked Single)
24. Row 1 / Column 3 → 9 (Naked Single)
25. Row 6 / Column 4 → 8 (Naked Single)
26. Row 5 / Column 4 → 7 (Full House)
27. Row 1 / Column 6 → 1 (Naked Single)
28. Row 1 / Column 7 → 7 (Full House)
29. Row 3 / Column 6 → 9 (Full House)
30. Row 5 / Column 8 → 3 (Naked Single)
31. Row 4 / Column 7 → 1 (Naked Single)
32. Row 5 / Column 1 → 2 (Naked Single)
33. Row 5 / Column 9 → 8 (Full House)
34. Row 3 / Column 7 → 8 (Naked Single)
35. Row 3 / Column 1 → 1 (Full House)
36. Row 4 / Column 8 → 7 (Naked Single)
37. Row 4 / Column 9 → 2 (Naked Single)
38. Row 6 / Column 9 → 9 (Full House)
39. Row 4 / Column 1 → 3 (Full House)
40. Row 8 / Column 9 → 1 (Full House)
41. Row 2 / Column 7 → 9 (Naked Single)
42. Row 2 / Column 8 → 1 (Full House)
43. Row 9 / Column 7 → 3 (Full House)
44. Row 2 / Column 2 → 8 (Naked Single)
45. Row 2 / Column 1 → 7 (Full House)
46. Row 6 / Column 1 → 4 (Naked Single)
47. Row 6 / Column 2 → 1 (Full House)
48. Row 8 / Column 2 → 4 (Full House)
49. Row 8 / Column 1 → 8 (Full House)
50. Row 8 / Column 3 → 2 (Naked Single)
51. Row 9 / Column 3 → 1 (Full House)
52. Row 8 / Column 8 → 9 (Naked Single)
53. Row 9 / Column 8 → 8 (Full House)
54. Row 9 / Column 4 → 2 (Full House)
55. Row 8 / Column 4 → 3 (Full House)