The Database selector allows you to conveniently select a subset of games to be used. Database subsets are based on the minimum rating of both players involved in each game. The default subset is 2200+, and subsets up to SuperGM+ (2700+) can be selected. To see the full database select the "All Games" option.

The database subset will effect the game search, the games for position list and the results shown in the opening explorer. The database subset will be ignored if you enter a rating based search in the advanced or quick search.