Practice📖 Learn the rule first ▸
Lines
German Whispers
Adjacent digits on the line differ by at least 5.
Tips
- ◆5 can never appear on a whisper line — nothing differs from it by 5.
- ◆Beside a 4 only 9 fits; beside a 6 only 1 — values swing high/low.
- ◆Lines tend to alternate between {1,2,3,4} and {6,7,8,9}.
Drills