The Challenge

In honour of the SC2010UK event held at Bletchley Park, we have decided to put forth a coding challenge loosely based on the historic efforts of the WWII code breakers.

This challenge is inspired by the Lorenz cipher and Colossus computer used by the WWII code breakers at Bletchley Park.

There will be 5 questions you need to solve. Good Luck! Enjoy!

To Access the Challenge

To obtain the questions for the challenge you will need to use a JSON service to request each question. An example on how to use the JSON REST API is found here:

Please note that you will need to use the 'reference-url' attribute in the JSON data to get the information needed to solve the question. Once you have successfully completed a question, then you will be redirected to the next question in turn.

If you need any help, please do not hesitate to contact us at

You can start the challenge by requesting

Challenge Format

Promote the Challenge

The Minisculus Challenge is suitable for focus groups, code retreats or individuals who want to sharpen their coding skills or learn a new language. Solutions to the challenge can be submitted using any coding language.

If you organize a code retreat using the Minisculus Challenge and would like us to promote the event on this website, then please email

Hall of Fame

Below is a list of the brave souls who have completed the challenge and lived to tell the tale...

Special thanks to Spencer Turner for the design of this website.