Kids' Cryptography with Key from Leonardo Groups
Solve a Leonardo group puzzle to get a key. Plain text (a word in a natural language) must be read in a natural language and a cryptogram in symbolic language. The symbolic language is based on a Boolean ring.[more]
Part one of solution: find matching symmetry types to assign letters to numbers.[less]
 Strømmen. "1000 Most Common Spanish Words-Frequency Vocabulary." (May 30, 2023) strommeninc.com/1000-most-common-spanish-words-frequency-vocabulary.
 1000 Most Common Words. "1000 Most Common Esperanto Words." (May 30, 2023) 1000mostcommonwords.com/1000-most-common-esperanto-words.
 E. Price. "wordlist.10000." (May 30, 2023) www.mit.edu/~ecprice/wordlist.10000.