Missing Controller

Error: Riddlef6Controller could not be found.

Error: Create the class Riddlef6Controller below in file: app/controllers/riddlef6_controller.php

<?php
class Riddlef6Controller extends AppController {

	var $name = 'Riddlef6';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp