Design competitions are part of the design tradition since ages. Still structured empirical research about this topic is lacking. This paper describes the results of six months participatory observation as a member of a project team responsible for the organization of an international ideas competition. The data include observations, interviews and document analysis. The results for this paper focus on the design of the competition and stakeholder participation from a client perspective. The findings show four combinations of aspects that underlie several problems of design competitions as currently perceived by architectural practice: the dynamics of the brief, the balance between professionalism and ambition, the link between participation and competition aims, and the influence of expertise at client obligations. It is this constant search for a balance between ambitions, aims, opportunities and needs that make clients experience numerous difficulties during the design of a competition. It is however the same search that makes every competition unique and a wealth of information about clients and architectural design. Starting at the latest with the Greeks, competitions have traditionally been a vehicle for the creation of major civic buildings and public spaces, such as government buildings, performing art centres, educational facilities, public libraries, museums and housing (Strong, 1976). The purposes of design competitions are several fold (de Haan & Haagsma, 1988; Larson, 1994; Spreiregen, 1979): disclose new talent, challenge 'convential wisdom', create a dialogue on design, enlarge support, increase competition, select an architect, educate students, gain insight in competences, contribute to the cultural dimension of the built environment and expand the boundaries of design. Svensson (2008) adds the aims of marketing a project, assuring quality through jury assessment, running architecture politics and coordinating different fields of interests. Information on both past and recent design competitions is fragmented, inadequate and frequently unrecorded (Lipstadt, 2005). Still design competitions are considered as a treasury of the profession (de Haan & Haagsma, 1988). The relevance of design competitions is acknowledged worldwide in the world of architecture. Historically competitions have proven to be a breakthrough for several architects. They have produced high profile projects but also a lot of debate, dispute and affairs (Strong, 1996). "Competitions clearly represent for the hopeful contestants the possibility that the best person may win at least for this once, what happens next after that is another story" (Larson, 1994, p. 475). Spreiregen (1979) talks about three myths in case of design competitions that remain to be persistent: competitions cost money, competitions take more time and competition designs never get built. In the long history of design competitions hardly any attempt has been made to observe, analyze or evaluate the selection process of architects (Strong, 1996). Most publications on design competitions show the diversity of the competition and a statement by the jury on the relevance and quality of the entries for the architectural profession (e.g. de Haan & Haagsma, 1988; Glusberg, 1992). Others describe the aims, procedures, potentials and pitfalls in a historical perspective (Lipstadt, 2005; Spreiregen, 1979; Stichting Bouwresearch, 1980; Sudjic, 2005). Recently a few scholars studied the judgement process of jury panels in the current context of design competitions (Kazemian & Rönn, 2009; Kreiner, 2006, 2008; Spreiregen, 2008; Svensson, 2008) and the strategies of architectural teams that join competitions (Kreiner, 2007a, 2007b; Manzoni, Morris, & Smyth, 2009). These publications indicate that problems in competition mainly concern the honesty of (criteria for) selection of the participants, the requirements of the client, the composition of the jury panel, the objectivity of the jury's judgement, and the financial compensation compared to the amount of work. All these issues are based on decisions that clients make during the organisation of a competition. Yet research from the client perspective is lacking. The main research question is therefore: which difficulties do clients experience in designing a design competition in architecture? This paper addresses four main difficulties that I distinguished from empirical research about clients organizing a design competition.