Markovian Parallax Denigrate
Markovian Parallax Denigrate is a series of unexplained word puzzles posted to Usenet in 1996. The posts are often mentioned in conjunction with other bizarre and/or unsolved internet mysteries, such as Sad Satan, cicada 3301, the Publius Enigma and Unfavorable Semicircle. Hundreds of messages were posted, and were initially dismissed as spam. It has been referred to as "The Internet’s oldest and weirdest mystery", and "one of the first great puzzles of the internet".
Cryptographers, software developers, and hackers have worked on decoding the puzzles, but have never been successful. In 2016, Susan Lindauer was identified as a possible source of these posts, though she denied being the author, and other possible explanations include an early experimental chat bot or text generator, or a programmer experimenting with Markov chains.
- Dewey, Caitlin (May 2, 2014). "Five of the Internet's eeriest, unsolved mysteries". Washington Post. Retrieved 10 September 2017.
- Förtsch, Michael (November 25, 2016). "Sieben ungelöste Rätsel des Internets". Wired.de. Retrieved 10 September 2017.
- Morris, Kevin (November 2, 2012). "The Markovian Parallax Denigrate: Unraveling the Internet's oldest and weirdest mystery". The Daily Dot. Retrieved 10 September 2017.
- Privalov, Alexander (August 24, 2017). "Краткий курс истории спама". Popmech.ru. Retrieved 10 September 2017.