The classic Busy Beaver game asks how long an n-state k-color Turing machine program can run before executing a halt instruction. The phrase “executing a halt instruction” is not normally used in stating the problem; instead, people just say “halting”. But executing a halt instruction is just one way for a program to signal that it is finished. From the point of view of a programmer trying to maximize machine steps, it’s about the worst termination signal possible because it require...
