One of my favorite theorems to learn about in math was the Four Color Theorem. The theorem states that any contiguous separation of a plane (called a map) can be completely colored by at most four colors such that no area touches another area of the same color. When my son, Max, asked for a US map to color, I saw my opportunity to introduce him to this theorem!
This week’s GeekDad Puzzle of the Week is the same challenge: Use the map (below) or a similar map to produce a balanced four color map of the contiguous US. Each correct entry will have a shot at winning this week’s fabulous prize, a ThinkGeek Gift Certificate.
For an additional challenge (and an additional entry in the prize drawing) explain why it may or may not be possible to trace a path from any given state to any other while avoiding a given color (assuming neither the start nor the end state is that avoided color.) For purposes of this part of the puzzle, consider the “Four Corners” (UT,CO,NM,AZ) to all be touching one another.
As always, please send in your response the GeekDad Central. Good luck, and happy puzzling!
This post was last modified on December 16, 2017 6:55 pm
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