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Imagine you have four cubes, whose faces are colored red, blue, yellow, and green. Can you stack these cubes so that each color appears exactly once on each of the four sides of the stack?

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Now, the coloring on these cubes is very important. In other words: we’re only considering THESE four particular cubes. So, for example, cube 1 has exactly three red faces, and one yellow, green, and blue face, moreover, those colors appear on the particular faces as indicated. Similarly for the other cubes.

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Print off a template for the cubes shown in the video!

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Resources:

Introduction to Graph Theory by Robin J. Wilson https://www.amazon.com/Introduction-Graph-Theory-Robin-Wilson/dp/027372889X

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