This is the fourth installment of the Fortnightly Topic Challenges Rerun described here and the thirty-seventh installment of the FTCs overall, with topics suggested and voted on here. This fortnight's topic is "Reusing Information" (suggested by phenomist) and will span from the 3rd of September to the 16th of September. During this period, we will compile the list of questions with a relevant title and post it as an answer to this question.

In the meantime, please go and propose and vote on future challenges!

Everyone have fun, and happy puzzling!

Link to other Fortnightly Topic Challenges.

The Reusing Information topic challenge does not have a single specific tag associated. Due to the nature of this challenge, please add your own questions to the list below. The suggestion is copied to this post for posterity.

Reusing Information

Sometimes, I often particularly enjoy puzzles that reuse the same piece of information over and over. Essentially, it shares the elegance of a well constructed &lit, with whole text serving double-duty. Every word not only is used in entirety for the wordplay part, but the whole phrase could serve as a plausible definition too! Some more examples to follow:

  • Encoding several different messages in the same piece of text, each one leading to the next by instructions.

  • Neat meta structures sometimes allow for a set of answers to be used multiple times. The Mystery Hunt has some examples.

  • Extraction from the same ciphertext twice, using (ideally) two different ciphers - could be overambitious, but this theme is ambitious.

  • Next, a picture that has three interpretations - although, this is close to puzzle sets, so try to seamlessly integrate the pieces.

  • Chimera / double puzzles (see this link). Each grid can work in multiple rulesets.

  • Letters arranged in a grid. Extraction can appear in multiple ways - for example, some letters could be a word search, others from a grille.

Note that simply reducing information and applying a recursive step isn't necessarily this - that would be using newly acquired data. Going back to square one is this theme's spirit! Then start over, with a fresh look, either by sheer inspiration or by explicit instruction. Have you noticed that this suggestion is itself a puzzle that self-illustrates this theme?


1 Answer 1


List of all questions published as part of the Fortnightly Topic Challenge #38:

The highest-voted of these is A Periodic Puzzle, with a score of 21 at the end of the fortnight.

The most viewed is A Periodic Puzzle, with approximately 327 views during the fortnight.

  • $\begingroup$ Now it has a score of $26$ (my upvote included) :P $\endgroup$
    – Mr Pie
    Commented Sep 21, 2018 at 6:13

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .