A strange little side quest
A small trivia drop for Daily Calcudoku: The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. And then there is this: Computer Space reached arcades in 1971 and became one of the earliest commercial electronic arcade games, even though its controls proved demanding for many players. So a round of Daily Calcudoku is not just a quick distraction; it is a tiny stop on a much longer puzzles timeline.