How can Chelsea beat Barcelona in the Champions League?

The question of how to beat Barcelona is one few have answered with much success in recent years.

A second Champions League final is the prize for Chelsea if they come up with the solution. A referee, a penalty shoot-out and a "ghost" goal have left the Blues cursing the fates in their attempts to win the trophy coveted above all others by owner Roman Abramovich. But to beat Barca they must have the hardest workers and the bravest defenders.