Play German Whispers Sudoku Online Free

Play German Whispers Sudoku online for free. Adjacent digits on green lines must differ by at least 5. Classic Sudoku rules apply.

▶ Play German Whispers Sudoku — Free
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How to Play German Whispers Sudoku

  1. Standard Sudoku rules apply.
  2. Green lines connect cells where adjacent digits must differ by 5 or more.
  3. Valid adjacent pairs: (1,6), (1,7), (1,8), (1,9), (2,7), (2,8), (2,9), (3,8), (3,9), (4,9).
  4. 5 can NEVER appear on a German Whispers line.
💡 Pro Tip
The digit 5 is impossible on any whisper line. Lines alternate between low (1-4) and high (6-9) digits.

Frequently Asked Questions

Why can't 5 appear on a German Whispers line?

Because nothing in 1-9 differs from 5 by 5 or more — you'd need either 0 or 10, which don't exist in Sudoku.

Does the ≥5 rule apply only to adjacent cells on the line?

Yes — only consecutive cells along the line need to differ by 5 or more. Non-adjacent cells on the same line have no extra constraint.

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▶ Play German Whispers Sudoku