WCA Scrambles

The current official scramble programs is TNoodle-WCA-1.2.2. It generates high-quality scramble sequences for all the events of a competition at once.

Download the official scramble program:

Last official change: January 22nd, 2024

Important Notes for Delegates

Scramble Secrecy

Detailed Instructions for TNoodle

TNoodle requires Java to be installed on your computer.

  1. Run the https://github.com/thewca/tnoodle/releases/download/v1.2.2/TNoodle-WCA-1.2.2.jar file on your computer.
    It will open the page http://localhost:2014/scramble in your browser.
  2. Enter the details for your competition (competition name, number of rounds for each event, details for each round).
    If you would like to password protect the file, enter a password.
  3. Wait for the loading bar to finish and click the "Scramble!" button that appears.
    A .zip file will download in your browser.


About TNoodle

TNoodle uses code developed or adapted by Jeremy Fleischman, Ryan Zheng, Clément Gallet, Shuang Chen, Bruce Norskog, and Lucas Garron. View the TNoodle project on GitHub to view the source, report an issue, or contribute to its development.

History of Official Releases

Old versions must not be used without permission from the WCA Board. These are provided in case you want to check the behaviour of an older version.

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