Previous major discussions:<p><a href="https://news.ycombinator.com/item?id=26570795" rel="nofollow">https://news.ycombinator.com/item?id=26570795</a><p><a href="https://news.ycombinator.com/item?id=25397787" rel="nofollow">https://news.ycombinator.com/item?id=25397787</a><p><a href="https://news.ycombinator.com/item?id=25390941" rel="nofollow">https://news.ycombinator.com/item?id=25390941</a><p><a href="https://news.ycombinator.com/item?id=25387216" rel="nofollow">https://news.ycombinator.com/item?id=25387216</a><p>There are more submissions, some have several comments ... you can find them here:<p><a href="https://hn.algolia.com/?dateRange=all&page=0&prefix=true&query=Zodiac%20Cipher&sort=byDate&type=story" rel="nofollow">https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...</a>
"Finally" = December 2020<p>Worth noting that hard/impossible to crack doesn't automatically mean a cipher is good. One can easily scramble letters in ways that makes it literally impossible to decipher, but that defeats the whole point.