A 6×6 Grill for Secret Writing

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A grill consists of a square of paper in which square holes have been cut in a certain way. In this case, the paper consists of a square with nine smaller squares cut out. Place the square on a piece of paper and write the first nine letters of some text in the holes. Then, turn the grill a quarter turn and write the next nine letters. Continue the procedure for two more turns. The given text consists of words in English, Spanish or Esperanto.

Contributed by: Izidor Hafner (June 14)
Open content licensed under CC BY-NC-SA


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References

[1] H. Lysing (J. L. Nanovic), Secret Writing: An Introduction to Cryptograms, Ciphers, and Codes, New York: Dover Publications, 1974 pp. 36–37.

[2] Strømmen. "1000 Most Common Spanish Words-Frequency Vocabulary." (Apr 24, 2023) strommeninc.com/1000-most-common-spanish-words-frequency-vocabulary.

[3] 1000 Most Common Words. "1000 Most Common Esperanto Words." (Apr 24, 2023) 1000mostcommonwords.com/1000-most-common-esperanto-words.


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