These puzzles are a common staple of Dell puzzle magazines, such as Math & Logic Problems.
Puzzle and Goal
An unsolved puzzle consists of a grid of squares, sometimes with internal gaps. There are numbers along the top and side of the grid.
The goal is to find a route through the grid, usually from a specific start point to a specific end point.
The solved grid must satisfy the following conditions:
The path may only enter and exit each square once.
The numbers on the top and side indicate the number of squares in that rank that the path goes through.
While basic mazes involve a standard rectangular grid (where each square is potentially part of the maze), different shapes as well as gaps may be employed.
In some cases, there may be multiple possible entry and exit points.