Welcome to CodeCup!
We offer you a challenging programming contest. Anybody can participate; there are no age restrictions or other special requirements. The CodeCup never charges entry fees.
In 2025 the game for the contest is Box. We have placed a description of the rules online. You can always watch a sample game being played.
Competition
After you login in to the CodeCup system you can submit your program. You can find the submission section under "My submissions". Your submission will be tested automatically against our sample players to ensure that it follows the rules. After passing this check your program is ready to compete! Note that your program must be capable of playing both as player 1 and player 2.
We will hold test competitions every three weeks starting in September. In these competitions you will see how your program performs against other players. You can follow the complete games and use this information to improve your strategy.
The official Box competition has been played on January 18th 2025. You can go directly to the final ranking of the programs.
Testing at home - Caia
The CodeCup Team enables you to test your program at home. Our testing software is free and enables you to organize competitions at home without involvement of other people. The software to play at home is called Caia. It works in the same way as our contest software. By hosting your own local competition you can test and improve your program in a fast and easy way. Download Caia and start today!
Dutch high school student competition
This is an invitation for Dutch high school students to take part in the olympiad in informatics:
Ben jij scholier? Doe ook mee aan de eerste ronde van de Nederlandse Informatica Olympiade en het NIO spel Squares!
News
On Saturday January 18th the CodeCup competition was played. This competition with the game Box was won by Mark ter Brugge. The organization congratulates Mark with his victory. The competition was very exciting. There was hardly a difference with the number two, Tapani Utriainen. The difference with the numbers three and four was also not really big. In total we had 59 participants, comparable to last year. We have the game for 2026 completely ready and we hope that you will participate again then. We think we have a nice challenge for you, we expect to publish the game in March or April. The NIO participants from the Netherlands will participate in this game.