- SwordQuest: EarthWorld is an action-adventure game released for the Atari 2600 and is part of the SwordQuest series. The gameplay involves navigating through rooms, collecting items, completing action stages to find more items, and discovering sets of numbers when the right combination of items is placed in the right rooms.
- Halting problem (Wikipedia)
In computability theory, the halting problem is the problem of determining, from a description of an arbitrary computer program and an input, whether the program will finish running, or continue to run forever. The halting problem is undecidable, meaning that no general algorithm exists that solves the halting problem for all possible program–input pairs. The problem comes up often in discussions of computability since it demonstrates that some functions are mathematically definable but not computable.