This volume contains the research papers presented at the International C- ference on Automated Reasoning with Analytic Tableaux and Related Methods (TABLEAUX2005)heldSeptember14-17,2005inKoblenz,Germany.Thisc- ference was the fourteenth in a series of internationalmeetings since 1992(listed on page IX). It was part of the International Conference Summer Koblenz 2005, which included conferences covering a broad spectrum of topics and intere- ing ?elds of application for tableau-based methods: arti?cial intelligence (KI), multi-agent systems (MATES), automated reasoning and knowledge represen- tion (FTP), and software engineering and formal methods (SEFM). The Program Committee of TABLEAUX 2005 received 46 submissions from 16 countries. After each paper was reviewed by three referees, and an intensive discussion on the borderline papers was held during the online meeting of the ProgramCommittee,18researchpapersand7systemdescriptionswereaccepted based on originality, technical soundness, presentation, and relevance. I wish to sincerely thank all the authors who submitted their work for consideration.And I would like to thank the Program Committee members and other referees for theirgreate?
ortandprofessionalworkinthereviewandselectionprocess.Their names are listed on the following pages. In addition to the contributed papers, the program included four excellent keynotetalks.IamgratefultoProf.DiegoCalvanese(FreeUniversityofBolzano, Italy), Prof. Ian Horrocks (University of Manchester, UK), Prof. Hans Jur .. gen Ohlbach (Ludwig Maximilian University, Munich, Germany), and Prof. Erik Rosenthal (University of New Haven, USA) for accepting the invitation to - dress the conference.