Rugby-loving couch potatoes beware: RBS expects you to flex your brain, if not your muscles, during the Six Nations tournament this year. The sports-sponsoring bank has created an interactive quiz, fixtures and social app for 2012, with game-related questions, score tables and Facebook integration for those particularly competitive. Available in versions for iPad, iPhone, Android and Facebook, we grabbed some hands-on time with the free Live Challenge app before its full release.











