busy beaver
a halting, binary-alphabet Turing machine which writes the most 1s on the tape, using only a limited set of states
en-US/ˈbɪzi ˈbivɚ/
en-GB/bɪziː ˈbiːvə/
a halting, binary-alphabet Turing machine which writes the most 1s on the tape, using only a limited set of states