Puzzle Day 2025


  • The puzzle packet contains 9 puzzles. The first 8 puzzles are independent of one another. The final puzzle is a metapuzzle: it requires answers from at least 6 puzzles in order to solve it.
  • The answer to each puzzle is a single word or short phrase in English.
  • Some puzzles are best solved online. If you prefer, you can view a web version of the puzzles in this packet at https://meta-puzzlehunt.webflow.io.
  • You may use the internet and any other resources at your disposal, including artificial intelligence (AI).
  • You are encouraged (but not required) to work on a team with 1, 2, or 3 classmates or friends, either in person or online. You may not share hints or answers with other teams.
  • Please submit all of your work electronically via TowerNet.
  • If you’d like to submit your answers to CS50, you must register before your submit, and then submit your answers by 23:59 on Monday, April 7, 2025. If working on a team, only one member of your team should submit. If you submit multiple times, we’ll consider your only most recent submission, which should contain all of your answers together. Be sure to avoid typos!
  • Have fun and good luck!

Errata


  • Feel free to use the playable spreadsheet for the Bomb Squad puzzle!
  • Some country emojis on Bananaanagrams may not display correctly on Windows PCs using the PDF. If you’re seeing missing emojis, trying viewing the web version of the puzzle or the included spreadsheet!