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

This Sudoku Puzzle has 38 steps and it is solved using Naked Single, Full House, Hidden Single, undefined, Hidden Rectangle, Give Up techniques.

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

Solution Steps:

  1. Row 3 / Column 3 → 7 (Naked Single)
  2. Row 1 / Column 3 → 1 (Full House)
  3. Row 5 / Column 5 → 7 (Naked Single)
  4. Row 3 / Column 4 → 4 (Naked Single)
  5. Row 4 / Column 3 → 8 (Naked Single)
  6. Row 2 / Column 5 → 1 (Naked Single)
  7. Row 3 / Column 8 → 3 (Naked Single)
  8. Row 3 / Column 5 → 5 (Full House)
  9. Row 4 / Column 6 → 2 (Naked Single)
  10. Row 6 / Column 6 → 8 (Full House)
  11. Row 6 / Column 1 → 1 (Naked Single)
  12. Row 1 / Column 7 → 9 (Naked Single)
  13. Row 8 / Column 5 → 3 (Naked Single)
  14. Row 6 / Column 2 → 3 (Naked Single)
  15. Row 6 / Column 9 → 2 (Full House)
  16. Row 1 / Column 9 → 7 (Naked Single)
  17. Row 1 / Column 6 → 3 (Full House)
  18. Row 4 / Column 2 → 7 (Naked Single)
  19. Row 2 / Column 8 → 4 (Naked Single)
  20. Row 4 / Column 1 → 4 (Naked Single)
  21. Row 2 / Column 9 → 8 (Naked Single)
  22. Row 2 / Column 7 → 6 (Full House)
  23. Row 4 / Column 8 → 1 (Naked Single)
  24. Row 4 / Column 7 → 3 (Full House)
  25. Row 5 / Column 8 → 9 (Naked Single)
  26. Row 9 / Column 8 → 7 (Full House)
  27. Row 5 / Column 1 → 5 (Naked Single)
  28. Row 5 / Column 3 → 6 (Full House)
  29. Row 5 / Column 9 → 4 (Naked Single)
  30. Row 5 / Column 7 → 8 (Full House)
  31. Row 9 / Column 1 → 8 (Naked Single)
  32. Row 8 / Column 1 → 7 (Full House)
  33. Row 7 / Column 9 → 9 (Naked Single)
  34. Row 9 / Column 9 → 3 (Full House)
  35. Row 8 / Column 4 → 8 (Hidden Single)
  36. XY-Wing: 5/9/1 in r8c67,r9c4 => r9c7<>1
  37. Hidden Rectangle: 4/5 in r7c67,r9c67 => r7c6<>5
  38. Give Up: Don't know how to proceed!
Show More...