A solution in Ruby to the Boggle question. "Given a Boggle board that measures 4x4 , how would you be able to know if a word exists or if a word doesn't exist on it?" (see also: [this Medium article] (https://medium.com/@alicht/boggle-toggle-sell-it-to-the-butcher-in-the-store-53c86509d908) I wrote which explains the code in greater detail)