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

This Sudoku Puzzle has 56 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Skyscraper techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 3 → 3 (Naked Single)
  2. Row 6 / Column 8 → 7 (Naked Single)
  3. Row 1 / Column 4 → 2 (Naked Single)
  4. Row 9 / Column 7 → 8 (Naked Single)
  5. Row 1 / Column 5 → 7 (Naked Single)
  6. Row 1 / Column 7 → 5 (Full House)
  7. Row 6 / Column 7 → 2 (Naked Single)
  8. Row 7 / Column 9 → 4 (Naked Single)
  9. Row 5 / Column 7 → 4 (Naked Single)
  10. Row 2 / Column 9 → 9 (Naked Single)
  11. Row 8 / Column 7 → 3 (Naked Single)
  12. Row 2 / Column 7 → 7 (Full House)
  13. Row 7 / Column 8 → 1 (Full House)
  14. Row 3 / Column 9 → 2 (Naked Single)
  15. Row 5 / Column 9 → 8 (Full House)
  16. Row 6 / Column 5 → 5 (Hidden Single)
  17. Row 5 / Column 1 → 5 (Hidden Single)
  18. Row 3 / Column 2 → 4 (Hidden Single)
  19. Row 3 / Column 8 → 3 (Naked Single)
  20. Row 2 / Column 8 → 4 (Full House)
  21. Row 8 / Column 3 → 6 (Hidden Single)
  22. Row 5 / Column 6 → 7 (Hidden Single)
  23. Row 3 / Column 5 → 9 (Hidden Single)
  24. Row 8 / Column 4 → 5 (Hidden Single)
  25. Row 5 / Column 2 → 3 (Hidden Single)
  26. Row 7 / Column 1 → 3 (Hidden Single)
  27. Row 2 / Column 5 → 3 (Hidden Single)
  28. Row 8 / Column 5 → 4 (Hidden Single)
  29. Row 4 / Column 4 → 4 (Hidden Single)
  30. Locked Candidates Type 1 (Pointing): 2 in b5 => r79c5<>2
  31. Row 9 / Column 5 → 1 (Naked Single)
  32. Locked Candidates Type 2 (Claiming): 8 in c4 => r2c6<>8
  33. Skyscraper: 1 in r3c1,r5c3 (connected by r35c4) => r2c3<>1
  34. Row 2 / Column 3 → 8 (Naked Single)
  35. Row 3 / Column 1 → 1 (Full House)
  36. Row 3 / Column 4 → 8 (Full House)
  37. Row 8 / Column 1 → 8 (Full House)
  38. Row 7 / Column 2 → 2 (Naked Single)
  39. Row 8 / Column 6 → 9 (Naked Single)
  40. Row 8 / Column 2 → 1 (Full House)
  41. Row 9 / Column 3 → 9 (Full House)
  42. Row 9 / Column 6 → 2 (Full House)
  43. Row 6 / Column 2 → 8 (Naked Single)
  44. Row 4 / Column 2 → 9 (Full House)
  45. Row 6 / Column 6 → 1 (Full House)
  46. Row 4 / Column 3 → 2 (Naked Single)
  47. Row 5 / Column 3 → 1 (Full House)
  48. Row 4 / Column 8 → 6 (Naked Single)
  49. Row 4 / Column 5 → 8 (Full House)
  50. Row 5 / Column 8 → 9 (Full House)
  51. Row 2 / Column 6 → 6 (Naked Single)
  52. Row 2 / Column 4 → 1 (Full House)
  53. Row 5 / Column 4 → 6 (Full House)
  54. Row 7 / Column 6 → 8 (Full House)
  55. Row 7 / Column 5 → 6 (Full House)
  56. Row 5 / Column 5 → 2 (Full House)
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