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

This Sudoku Puzzle has 34 steps and it is solved using Naked Single, Full House, Hidden Single, Skyscraper, undefined, Give Up techniques.

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

Solution Steps:

  1. Row 4 / Column 7 → 5 (Naked Single)
  2. Row 3 / Column 8 → 5 (Naked Single)
  3. Row 3 / Column 9 → 9 (Naked Single)
  4. Row 3 / Column 6 → 3 (Naked Single)
  5. Row 3 / Column 5 → 8 (Naked Single)
  6. Row 3 / Column 4 → 4 (Full House)
  7. Row 4 / Column 6 → 6 (Naked Single)
  8. Row 9 / Column 6 → 1 (Naked Single)
  9. Row 2 / Column 6 → 5 (Naked Single)
  10. Row 7 / Column 6 → 9 (Full House)
  11. Row 9 / Column 7 → 6 (Naked Single)
  12. Row 8 / Column 7 → 1 (Naked Single)
  13. Row 5 / Column 7 → 9 (Full House)
  14. Row 9 / Column 5 → 7 (Naked Single)
  15. Row 4 / Column 2 → 4 (Hidden Single)
  16. Row 1 / Column 4 → 9 (Hidden Single)
  17. Row 6 / Column 5 → 3 (Hidden Single)
  18. Row 6 / Column 1 → 9 (Naked Single)
  19. Row 4 / Column 1 → 3 (Hidden Single)
  20. Row 8 / Column 3 → 9 (Hidden Single)
  21. Row 7 / Column 2 → 1 (Hidden Single)
  22. Row 8 / Column 8 → 3 (Hidden Single)
  23. Row 7 / Column 3 → 3 (Hidden Single)
  24. Row 8 / Column 9 → 4 (Hidden Single)
  25. Row 9 / Column 3 → 4 (Hidden Single)
  26. Row 7 / Column 9 → 5 (Hidden Single)
  27. Row 9 / Column 2 → 2 (Hidden Single)
  28. Row 9 / Column 9 → 8 (Full House)
  29. Row 7 / Column 8 → 2 (Full House)
  30. Row 6 / Column 2 → 5 (Naked Single)
  31. Row 4 / Column 8 → 8 (Hidden Single)
  32. Skyscraper: 1 in r1c5,r6c4 (connected by r16c9) => r2c4,r5c5<>1
  33. W-Wing: 7/2 in r4c4,r6c3 connected by 2 in r46c9 => r6c4<>7
  34. Give Up: Don't know how to proceed!
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