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

This Sudoku Puzzle has 54 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Give Up techniques.

Naked Single Explanation
Hidden Single Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 4 → 8 (Naked Single)
  2. Row 6 / Column 5 → 3 (Naked Single)
  3. Row 2 / Column 6 → 5 (Naked Single)
  4. Row 1 / Column 7 → 9 (Naked Single)
  5. Row 3 / Column 7 → 3 (Naked Single)
  6. Row 2 / Column 8 → 6 (Naked Single)
  7. Row 4 / Column 7 → 8 (Naked Single)
  8. Row 1 / Column 9 → 5 (Naked Single)
  9. Row 3 / Column 9 → 1 (Full House)
  10. Row 2 / Column 2 → 8 (Naked Single)
  11. Row 7 / Column 7 → 4 (Naked Single)
  12. Row 8 / Column 7 → 2 (Full House)
  13. Row 1 / Column 3 → 6 (Naked Single)
  14. Row 1 / Column 2 → 7 (Full House)
  15. Row 6 / Column 9 → 4 (Naked Single)
  16. Row 4 / Column 3 → 1 (Hidden Single)
  17. Row 2 / Column 1 → 3 (Hidden Single)
  18. Row 4 / Column 8 → 3 (Hidden Single)
  19. Row 9 / Column 3 → 8 (Hidden Single)
  20. Row 5 / Column 3 → 2 (Naked Single)
  21. Row 6 / Column 2 → 5 (Naked Single)
  22. Row 6 / Column 8 → 2 (Full House)
  23. Row 3 / Column 2 → 2 (Naked Single)
  24. Row 4 / Column 1 → 6 (Naked Single)
  25. Row 5 / Column 1 → 8 (Full House)
  26. Row 3 / Column 5 → 6 (Hidden Single)
  27. Row 5 / Column 4 → 6 (Hidden Single)
  28. Locked Pair: 7,9 in r45c9 => r5c8,r78c9<>7, r5c8,r78c9<>9
  29. Row 5 / Column 8 → 9 (Naked Single)
  30. Row 4 / Column 9 → 7 (Naked Single)
  31. Row 4 / Column 5 → 9 (Full House)
  32. Row 4 / Column 6 → 9 (Full House)
  33. Row 5 / Column 9 → 7 (Naked Single)
  34. Row 8 / Column 8 → 7 (Naked Single)
  35. Row 9 / Column 8 → 7 (Naked Single)
  36. Row 3 / Column 6 → 7 (Naked Single)
  37. Row 3 / Column 4 → 9 (Hidden Single)
  38. Row 7 / Column 1 → 7 (Hidden Single)
  39. Row 7 / Column 4 → 5 (Naked Single)
  40. Row 7 / Column 3 → 3 (Naked Single)
  41. Row 7 / Column 6 → 8 (Naked Single)
  42. Row 7 / Column 9 → 6 (Naked Single)
  43. Row 7 / Column 2 → 9 (Full House)
  44. Row 8 / Column 6 → 3 (Naked Single)
  45. Row 8 / Column 9 → 8 (Naked Single)
  46. Row 9 / Column 2 → 1 (Naked Single)
  47. Row 8 / Column 2 → 6 (Full House)
  48. Row 9 / Column 4 → 4 (Naked Single)
  49. Row 2 / Column 4 → 1 (Full House)
  50. Row 8 / Column 4 → 1 (Full House)
  51. Row 2 / Column 5 → 4 (Full House)
  52. Row 9 / Column 5 → 4 (Naked Single)
  53. Row 8 / Column 5 → 1 (Naked Single)
  54. Give Up: Don't know how to proceed!
Show More...