ROT13 and other cypher silliness (opens in new tab)

I wanted to encode a spoiler in a forum post last night, so used the ancient ROT13 reciprocal cypher in the time-honoured way. That way, casual readers can immediately read the solutions, but you can get them by running the text through the ROT13 cypher again. It’s a very simple cypher: the letters a–m are […]