Endgame theory teaches us two fundamental issues: First, how to extract the&10;maximum from a basic theoretical position with little material, where the experts&10;(from practice comprising thousands of games) have reached definite conclusions.&10;Second, the way in which we can handle an endgame, depending on the material&10;remaining on the board, and the ideas and plans we should employ.&10;This second issue is significantly more difficult to master because, apart from&10;making full use of the first one (we must be aware of the possible outcomes of the&10;endgame in question) it is greatly influenced by our experience and understanding,&10;which are basically derived from the images and impressions we have from related&10;positions. A primary role is played here by the effort we have invested in studying.&10;In middlegame theory, things are even tougher. We are obliged to study various&10;types of positions with specific strategic and tactical attributes, so as to understand&10;the underlying ideas and be able to employ them ourselves in similar situations.&10;While players have studied these topics and acquired knowledge, it is&10;the application of this knowledge in practice that helps differentiate between them.&10;Chess is not a simple game.&10;The purpose of this series is to introduce the reader to advanced training concepts,&10;using the same methods of presentation and instruction that were taught to great&10;players by famous trainers that they have worked with.&10;The series will continue with the topic of "the Bishop Pair", the first volume handled 'bishop endings' and we will examine how to&10;handle this &8220;power of the sun&8221; coupling.