starting everywhere and building bigger snake from smaller ones sounds like quantum version of classical inside outside algorithm that is used to check if an in

starting everywhere and building bigger snake from smaller ones sounds like quantum version of classical inside outside algorithm that is used to check if an input follows certain probabilistic context free grammar. if you don't know it, might be hard to find it https://en.wikipedia.org/wiki/Inside%E2%80%93outside_algorithm https://en.wikipedia.org/wiki/Inside%E2%80%93outside_algorit...