Müller/Engel: The Human Factor in Chess4 types of players with their strengths and weaknesses Playing styles in chess are an important and often discussed topic. GM Dr. Karsten Mller and GM Luis Engel take up a model by GM Lars Bo Hansen based on 4 types of players 'activists', 'pragmatics', 'theorists' and so called 'reflectors'. Their respective strengths and weaknesses are explained based on many examples, complemented by numerous exercises to enable the reader to assign himself to one