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Maze of Life - The Y-start challenge

From here-on the challenge is to discover how the blue-cell can manufacture various stable-state cell arrangements (or other definable goals) from a pre-defined start position. One challenge called the Y-start challenge is proposed here, however the applet will allow you to set-up and explore your own Maze of Life challenges.

Using the V2 applet (below) set up the illustrated Y-shaped start position, with the blue cell in the center of the grid. Then see if you can reach each of the illustrated goals. Location and orientation of the goal does not matter, nor which is the blue cell. 3 out of 4 of the goals are relatively easy, and one of these 3 is a gateway through which you must pass, to reach the missing 4th goal. But which is the gateway? And can you reach that elusive 4th goal?

start position

target goals


Click on Edit to set up a start position.
Click on Play to switch to play mode or to restart.
Use Undo/redo to replay previous moves (play mode only).
Click on Load to verify and rerun the move sequence in the text box (play mode only).


In Edit mode click on the grid to toggle cell status (black/blue/empty).
In Play mode click on the grid to move.


u - undo last move

It turned out the Y-start challenge raised many more questions than answers (see below). Discover the answers to many of these questions on the following pages. I recommend you start with the page on stable-state goals.

applet - © Andrea Gilbert 2000-2002
material & challenges - Andrea, Carl Hoff, Jacco Compier
applet JS conversion - cheerpj transpiler from Leaning Technologies - 2020