Karel Puzzle is a collection of problems that control the actions of a robot in a simulated environment through instructions. It is a programming exercise that is often used in teaching environments to help beginners learn programming and logical thinking. It provides a simple programming environment and a series of tasks that require writing code or generating instructions to control a robot named "Karel" to complete specific goals. For example, let the robot collect all the items and place them in a specified location, move along a specific route, etc. In this process, factors such as the robot's initial position, obstacles in the environment, and the specific requirements of the task need to be considered.

The Karel puzzle was developed by computer scientist Richard Gabriel in the early 1980s to teach programming and algorithmic concepts. The puzzle has become widely used for its simplicity and educational value.