With Aliyat Chess you can access to:
Huge, online and updated chess database with millions of games to play and analyze.
Very complete opening book to analyze positions and statistics. Analyzes hundreds of secondary lines.
Play against engine choosing from 5 different levels of difficulty.
Analyze different lines of positions with the chess engine and the MultiPV functionality.
Large database of openings and defenses to search. With an extended ECO to define a large number of variants.
Upload own games and create personal databases, all stored in the cloud and associated with your user account. You can always access to your games.
Also set custom positions, import games; and much more!