Logic and reasoning underlie clear thinking. They connect mathematics, language, and science with everyday decisions: how we draw conclusions, weigh evidence, and work through problems. Whether we are following a deductive argument or dealing with uncertainty, reasoning is part of almost everything we do. The Global Logic and Reasoning Competition gives students the chance to test and develop these skills, and to explore the subject beyond the usual school curriculum.

Vision, Mission, and Values

The Global Logic and Reasoning Competition aims to be accessible to all students from all countries regardless of their background, school, or institution. For that, the Global Logic and Reasoning Competition uses today's technologies and the global connection through the internet to make this competition possible: All you need is a pen, paper, and an internet connection to participate!

Logic and reasoning matter for many of the problems we face, from evaluating evidence and making decisions under uncertainty to designing fair systems. In an age of information abundance, now accelerated by AI systems that can generate convincing text on demand, the ability to think critically about what we read and hear is more important than ever: sorting reliable claims from noise, spotting weak arguments, and reaching conclusions we can stand behind. By working on logic and reasoning through competitions and educational programs, students can develop these habits early and find out how much they enjoy understanding how we think and argue. Our goal is a program that encourages students to explore reasoning in depth, and that gives students, parents, and teachers a way to get involved.

What is unique about GLRC?

Although the competition format is integral to the GLRC, its primary goal is to encourage students to engage with logic and reasoning and spark further interest in this and related fields. As a result, GLRC serves as a learning experience, motivating students and allowing them to learn through experimental problem-solving formats. Noteworthy aspects of the GLRC program include the following:

• Internationality:
  The Global Logic and Reasoning Competition is a global competition from the first round onward. All participants solve the same problems in every round: This enables a fair evaluation and allows for international exchange among participants, which is usually only available to a few national ambassadors participating in international rounds.


• Digital Accessibility:
  The competition uses the possibilities of the modern internet to give all students the opportunity to participate regardless of nation, region or school affiliation. Although having a teacher's support is beneficial, participating as an individual is always possible from anywhere around the world.


• Experimental Formats:
  Part of the GLRC experience are problem formats, which are uncommon for traditional competitions and aim for a distinctive learning experience. This includes problems that focus on the extension of school-typical formats through thought-provoking modifications or types of problems, which require a deeper dive into the research surrounding a topic.


• Real-World Research:
  Getting students in touch with real-world examples of research is an essential feature. The Semi-Final Round usually includes recently published research articles as part of the problem format, which is unique to GLRC: For many participants, this is the first time learning about actual research, and we offer additional support to expand this learning experience.


• Adjusted Difficulty:
  The problems are designed to appeal to both enthusiasts as well as students who are just starting to find interest in reasoning beyond the school curriculum. To ensure that everyone has a positive experience, the level of difficulty is adjusted to include more approachable problems similar to those typically seen in school, as well as more challenging problems that incorporate unusual formats.


• Online Tools for Teachers:
  We provide teachers and schools with supplementary resources and support them throughout each edition. Teachers have access to a dedicated interface for managing the submissions of their students, tracking their results & certificates and supervising the Final Round Exam.


• Local Groups & Ambassadors:
  As GLRC goes far beyond the annual competition, we strongly encourage and support the formation of local student groups related to logic and reasoning & GLRC around the world, including meetups and other events. The GLRC Ambassador Program allows motivated students and mentors to encourage other youths to engage with reasoning and to establish a local community that brings together students over thinking and problem-solving.


• Supportive Alumni Network:
  Our alumni network encourages international exchange, including the distribution of various relevant opportunities like scholarships or sponsored events, to support each participant's academic career.

How does GLRC compare to other competitions?

Comparing the Global Logic and Reasoning Competition to other competitions can be misleading: GLRC does not intend to be an alternative to established competitions or their national variations and actively encourages students to take part in such opportunities.

Instead, GLRC serves as a supplementary program designed to engage a wide range of students, particularly those just beginning to develop an interest in logic and reasoning and related subjects. It focuses on accessibility, making it a platform for students of all skill levels to explore and grow their understanding of reasoning and analytical thinking.

Although the annual competition is the central element, GLRC is not primarily structured around competitiveness but instead prioritizes the learning experience. Through experimental problem formats and real-world research topics, the competition introduces students to thought-provoking challenges that extend beyond standard school curricula and differ from traditional competition content. This approach appeals to students with varying levels of expertise, offering both approachable problems and more advanced tasks that inspire curiosity and creativity.

Moreover, GLRC empowers students by providing an independent platform that does not rely on their school or country. It connects participants through a global network, encouraging international collaboration and exchange. With a strong alumni community and supportive resources for teachers and local groups, GLRC goes beyond being just a competition.

History, Organization, and Funding

The Global Logic and Reasoning Competition is coordinated by Edu.Harbour and takes place annually on an international level. The organizing team is constantly evolving, with most team members being based in Germany. The idea formed after the success of other international competitions coordinated by Edu.Harbour, with the aim of establishing a similar online competition addressing the fascinating world of logic and reasoning.

The full organizing team of GLRC 2026 can be found on this page: Organizing Team of 2026

Organizing such an international competition involves significant costs, including human resources, technical infrastructure, materials, and more. As an independent and globally accessible program, GLRC is grateful to its sponsors for covering some of these expenses. The remaining costs are funded through participant contributions, such as the registration costs for the Semi-Final Round (Flyer) .

As a growing competition, GLRC is continuously evolving and improving each year to enhance the experience for participants and expand its impact worldwide!