Biologists spent ten years trying to map the structure of the elusive Mason Pfizer Monkey Virus, a problem that could unlock the cure for AIDS. The Contenders solved it in three weeks. Using the online puzzle game Fold It, scientists are enlisting video gamers to solve real- world problems. Fold It allows regular people from all over the world to team up and contribute to scientific breakthroughs by discovering the shape of proteins. The Contenders is one such team. How did these citizen scientists solve a problem that was once thought uncomputable?