## Alan Turing

**Peter Markowich**is a mathematician who likes to take pictures. At first his two interests seemed completely separate to him, but then he realised that behind every picture there is a mathematical story to tell.

*Plus*went to see him to find out more, and ended up with a pictorial introduction to partial differential equations.

**Stefan Kopieczek**explores his story.

**Claire Ellis**tells us about their heroic efforts, which historians believe shortened the war by two years.

**Lewis Dartnell**solves these, and other, puzzles of animal patterning.