Complex mergers are a challenge to every competition authority. We will have a series of presentations by experienced speakers. The presentations will cover market definition, theories of harm, economic methodology and remedies, all relating to practical cases. We will also talk about internal and external problems to be encountered, planning and structuring of cases, and specific practical examples as well as the international dimension of merger analysis. The topics will be addressed and discussed in lectures by competition experts from OECD countries and in case studies presented by the participants. On the final day, participants will engage in a case exercise on remedies.