These contests are inspired by Al Zimmermann's Programming Contests, Martin Gardner's columns in the "Scientific American" and Pierre Berloquin's columns in "Science & Vie".

The ultimate goal of these contests is to improve the "state of the art" of difficult combinatorial problems.

Each contest specifies a problem to solve.
It's easy to find a solution but hard to find a good solution.
Although these are called "programming contests", technically you don't need to write a computer program to compete.


To enter a contest, you only need to register.
Once registered, you may submit your solutions whenever you like, they will be automatically scored and the standings page will be updated instantly.

Have fun !