ChessBase Online by ChessBase GmbH

The whole history of chess in an app: 5 million chess games from 1624 till 2014
The whole history of chess in an app: 5 million chess games from 1624 till 2014! And every week new games from world class tournaments are added to it.

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About: ChessBase Online (iOS App Store version)

ChessBase 17 - Tips and Tricks

How to get the most from ChessBase 16