Donate

Crack the Code

Crack the secret code in as few guesses as you can!
Play
Objective: You are a hacker who has discovered a security flaw in a top secret mainframe. Crack the secret code in as few guesses as you can!
The board indicates that the first guess has two colors in the right position, but we don’t know which ones!
Objective: You are a hacker who has discovered a security flaw in a top secret mainframe. Crack the secret code in as few guesses as you can!
The board to the left indicates that the first guess has two colors in the right position, but we don’t know which ones!
Follow us:

© 2007–2024 Julia Robinson Mathematics Festival

Photo by Lexey Swall, Copyright © MSRI 2019. All rights reserved.

Build with ❤ by DD.NYC