BRIDGE Defence is the hardest part of playing bridge, but that doesn't mean that it's impossible to learn. In this final book of the bestselling "25" series, the authors explain how to make a plan as a defender: how to work out from the auction and play what declarer probably has, and which of the strategies available to defenders is likely to be successful. Opening leads, signalling and discarding are all covered in this basic guide to a vitally important topic.