Perfect for beginners with simple, common vocabulary
Enigmatic Communications Through History
Moderate difficulty suitable for most players
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6
Across
- 1. Early system sending coded messages via electrical pulses
- 2. Visual signaling system using flags or arms in the 19th century
- 3. Ancient technique of transmitting messages through rhythmic beats
- 5. Ancient ram’s horn trumpet used in ceremonial signaling
Down
- 4. Bird historically used to carry messages over distances
- 6. Underwater instrument used to detect sound waves
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