= How to Create User-Defined Problems =

In this video it is shown how user-defined problems can be used to extend HeuristicLab with new custom optimization problems. As an example a user-defined n-queens problem is created and you can see how to define the problem's parameters and its solution encoding and how to implement a custom evaluation function using a programmable operator.

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=== Additional Material ===
 * [raw-attachment:n-queens.hl]

=== Keywords ===
 * user-defined problem
 * n-queens
 * problem parameters
 * solution encoding
 * programmable operator
 * implement evaluation function