Dakara weapons puzzle
From The Stargate Omnipedia
Puzzle developed by Nicholas Rush and placed inside the online computer game, Prometheus. The Dakara weapons puzzle included a rudimentary version of the Ancient language to disguise the mathematical problem representing the power issues of the Icarus Project.
The puzzle was solved by Eli Wallace, and enabled the Icarus team to connect to the ninth chevron address -- the Destiny.
KEY EPISODE
Air, Part 1 - Eli Wallace spends a month cracking the Dakara weapons puzzle, which attracts the attention of the U.S. Air Force.