04103895 is referenced by 46 patents and cites 11 patents.

A game or test of skill which is comprised of three principal components: a playing surface that either conceals or suggests a secret pattern of paths, a probe for selecting points on the playing surface, and an indicator that reveals whether a selected point belongs on the pattern of paths. In a preferred form of the game the playing surface is a small card on which is marked a grid that indicates the possible positions and orientations of the concealed paths in the pattern. A start point is indicated on the grid; the player places a hand-held pencil-like probe at the start point and tries to find a continuous path from the start point to the end point. The probe leaves no mark on the card, but the player is aided by the indicator which provides a signal when the probe is on-path--the signal ceases abruptly if the probe is moved off-path. The end-point is reached when the probe arrives at a designated end-point line of the grid without an off-path indication, or a separate end-point signal (for example, a bell) can sound when the end-point is reached. The object of the game is to traverse the grid from start to end without once leaving a pattern path, and to do this in the fewest possible attempts.

Concealed pattern detection game
Application Number
Publication Number
Application Date
March 19, 1976
Publication Date
August 1, 1978
Louis Wilk
12440 Hilltop Dr., Los Altos Hills, 94022
Gerald L Pressman
7925 Rainbow Dr., Cupertino, 95014
A63F 9/06
View Original Source