A strange little side quest
Even a quick game like Smart Sudoku sits on top of decades — and sometimes centuries — of ideas. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. Another piece of context lands nicely beside it: 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. That gives Smart Sudoku a little more company than it first appears to have.
