Stringlist in zufällige Reihenfolge bringen

[Kas Ob.]

No sure if I understand the question 100%, but I would solve this by not using for-statement, it will just complicate the restrain the algorithm.
I think "While-do" or "Repeat-until" loop is better approach, something like:

Code:

  while Count < Required do
  begin
    SelectAtRandom;  // from the pot
    if SelectedIsOK then
      begin
        StoreInList;
        Inc(Count);
        // Here we could adjust the selection condition like remove elements from the pot
      end; // else we pick again and ignore the selected
  end;

SelectedIsOK can be be multiple conditions, like simple check if the current pick artist is not the last (or 2nd,3th) artist in the selected list.