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This Sudoku Puzzle has 53 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Uniqueness Test 1, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 5 → 4 (Hidden Single)
2. Row 9 / Column 1 → 4 (Hidden Single)
3. Row 6 / Column 6 → 9 (Hidden Single)
4. Row 8 / Column 4 → 7 (Hidden Single)
5. Row 9 / Column 7 → 6 (Hidden Single)
6. Row 9 / Column 5 → 2 (Naked Single)
7. Row 9 / Column 6 → 8 (Naked Single)
8. Row 9 / Column 2 → 7 (Naked Single)
9. Row 9 / Column 3 → 3 (Full House)
10. Row 2 / Column 6 → 4 (Hidden Single)
11. Row 6 / Column 4 → 4 (Hidden Single)
12. Row 2 / Column 4 → 2 (Hidden Single)
13. Row 3 / Column 1 → 7 (Hidden Single)
14. Row 4 / Column 3 → 7 (Hidden Single)
15. Row 3 / Column 7 → 2 (Hidden Single)
16. Locked Candidates Type 1 (Pointing): 1 in b5 => r4c18<>1
17. Locked Candidates Type 1 (Pointing): 1 in b8 => r8c123<>1
18. Locked Candidates Type 2 (Claiming): 1 in c1 => r5c23,r6c2<>1
19. Row 6 / Column 2 → 5 (Naked Single)
20. Row 6 / Column 9 → 7 (Naked Single)
21. Row 2 / Column 9 → 6 (Naked Single)
22. Row 7 / Column 9 → 2 (Naked Single)
23. Row 4 / Column 9 → 8 (Naked Single)
24. Row 8 / Column 8 → 9 (Naked Single)
25. Row 7 / Column 8 → 7 (Full House)
26. Row 4 / Column 1 → 3 (Naked Single)
27. Row 8 / Column 1 → 8 (Naked Single)
28. Row 8 / Column 3 → 5 (Naked Single)
29. Row 4 / Column 8 → 2 (Naked Single)
30. Row 6 / Column 1 → 1 (Naked Single)
31. Row 5 / Column 1 → 9 (Full House)
32. Row 6 / Column 7 → 3 (Full House)
33. Row 8 / Column 2 → 2 (Naked Single)
34. Row 5 / Column 3 → 6 (Naked Single)
35. Row 5 / Column 2 → 8 (Full House)
36. Row 2 / Column 7 → 7 (Hidden Single)
37. Row 1 / Column 8 → 8 (Hidden Single)
38. Row 3 / Column 2 → 6 (Hidden Single)
39. Row 1 / Column 9 → 4 (Hidden Single)
40. Row 5 / Column 9 → 5 (Full House)
41. Row 5 / Column 7 → 1 (Naked Single)
42. Row 1 / Column 7 → 5 (Full House)
43. Row 5 / Column 8 → 4 (Full House)
44. Uniqueness Test 1: 1/3 in r2c58,r3c58 => r2c5<>1, r2c5<>3
45. Row 2 / Column 5 → 9 (Naked Single)
46. Row 2 / Column 2 → 1 (Naked Single)
47. Row 1 / Column 3 → 9 (Full House)
48. Row 2 / Column 8 → 3 (Full House)
49. Row 7 / Column 2 → 9 (Full House)
50. Row 7 / Column 3 → 1 (Full House)
51. Row 3 / Column 8 → 1 (Full House)
52. Row 3 / Column 5 → 3 (Full House)
53. Give Up: Don't know how to proceed!