Selects the problem set to be used for tactics problems. There are three groups of problem types, rated, unrated and personal. Rated includes the officially rated sets such as Standard and Blitz sets. Unrated includes any of the default custom sets such as Mate in 1, Fork etc. Personal is where any tactical custom sets you create are placed.

Selects the problem set to be used for endgame problem solving. There are rated and personal folders, where the personal folder holds any custom endgame problem sets you may have created.

Three choices of hard, normal and easy. This option allows you to select the difficult of problems you receive when solving rated problems. What the option does is actually shift the average rating of problems you are given. 'Hard' mode serves up problems targeted at your current rating level, so on average, problem rating will match your own rating. The default 'normal' mode gives problems that are on average 100 rating points below your current rating, and 'easy' gives problems that are on average 200 rating points below your current rating. You should expect different success rates at each level of difficulty, and these different success rates ensures that on average, there is no total rating advantage to any of these modes.

The "Continue On" option defines under what conditions you automatically continue on to the next problem after completely the current one. You can choose to continue automatically when failing a problem, getting a problem correct, or never (by selecting neither of the options). Continue on fail is not recommended, as it is a good idea if you review your mistakes before continuing on to the next problem.