Mooshak is a system for managing programming contests on the Web. Mooshak's basic features include automatic judging of submitted programs, answering to clarification questions about problem descriptions, reevaluation of programs, tracking printouts, among many others.

Mooshak supports different kinds of contest, specially those based on ICPC rules. It has also support for IOI and "shortest program" contests, and can be easily extended for new types of contests.

The system was originally intended for contests, but it is increasingly being used in programming courses: to give instant feedback on practical classes, to receive and validate assignments submissions, to pre-evaluate and mark assignments, etc.

Mooshak is an Open Source Software distributed under Artistic License.

Getting Started

To correctly install Mooshak 2.0, follow these steps

Virtual Contests

In the virtual server you can compete in past contests as if they were just happening now! You will have access to the same problem descriptions. Your submissions will be checked against the same test vectors. The virtual contest will have exactly the same duration as the original one.

From your point of view, the contest will start the moment you log in.

More >

Test Drive

You can try all features of Mooshak before deciding to install it. Please bear in mind that this is an unprotected area (anyone has access to the passwords) so be patient if the configuration is not working properly and try not to mess too much with it. Each link bellow gives you access to the interface of a different user profile. Notice that most of these links require an authentication.

More >


See tutorials
Creating a Prolog Contest

This video shows how you can use Prolog (with YAP) in a contest in Mooshak 2.0.

Read more
Kora – Diagram Assessment

This video contains a small introduction to a new commponent of Mooshak for diagram assessment – Kora -, introduced in Mooshak 2.1.

Read more
Creating an ENKI Contest (Course)

This video tutorial shows how you can create an Enki contest (course) in Mooshak 2.0.

Read more


José Paulo Leal

José Paulo Leal

Main Developer

Assistant Professor at DCC, FCUP and Associate Researcher at CRACS

José Carlos Paiva

José Carlos Paiva

Associated Developer

Student at DCC, FCUP and Associate Researcher at CRACS

Helder Correia

Helder Correia

Kora Component Developer

Student at DCC, FCUP whose master thesis was the development of Kora

Rua Campo Alegre 1021/1055 4169-007 Porto, Portugal
bug reports?
E-mail: mooshak-support@dcc.fc.up.pt Phone: 220 402 973