This is the archived CodeCup 2020 website.
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CodeCup 2020 - An online programming competition  

CodeCup 2020 - An online programming competition

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 2020 the game for the contest is Gomoku. We have placed a description of the rules online. You can always watch a sample game being played.


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 black and white.

We will hold test competitions every three weeks starting at the end of 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 Gomoku competition has been played on January 18th 2020. 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!


The CodeCup competition 2020 was won by Tomek Czajka. He won the CodeCup six times in total, with the first occasion in 2006. Congratulations to Tomek! The competition among the Dutch students secondary education was an exciting one. Regarding the last few test competitions it seemed that Jeroen Op de Beek could win the Windesheim Digitalis price, but at the very last moment IOI medalist Marco Meijer surpassed Jeroen. Congratulations to Marco. We hope you enjoyed this years competition. Like last year, we hope to start the CodeCup 2021 as early as this year, somewhere in April or May.