Graphs, Networks and Algorithms

Ever played a game of trying to draw a pattern without taking your pen off the paper?

Can you connect gas, water and electricity to the houses without any pipes crossing?

Given a network diagram showing a friendship group, can you work out who's who?

Find out how a graph and some pots of paint can solve many problems.

Solving a tricky puzzle with a very neat mathematical argument.

How many colours do you need to colour a map?