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Solving the 'Four-Color Problem' of Map Making NPR's Jacki Lyden talks with Weekend Edition Saturday math guy Keith Devlin about a recently solved mathematical puzzle -- the "Four-Color Problem." A computer-generated proof shows that any map -- real or theoretical -- can be colored using only four colors.

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Solving the 'Four-Color Problem' of Map Making

Heard on Weekend Edition Saturday

Solving the 'Four-Color Problem' of Map Making

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NPR's Jacki Lyden talks with Weekend Edition Saturday math guy Keith Devlin about a recently solved mathematical puzzle — the "Four-Color Problem." A computer-generated proof shows that any map — real or theoretical — can be colored using only four colors.