DotRace — momentum racing on squared paper

Field notes

DotRace applies a simple momentum rule to a grid: each move repeats the previous displacement, followed by a one-square correction among nine possible destinations. The page includes six circuits, from beginner shapes such as Ring and Bean to longer technical layouts including Alpine, plus an editor for drawing tracks. It also frames the game through its documented 1973 Scientific American appearance and its earlier circulation on European squared paper.