A library of five volumes (A, B, C, D, E), the five main groups of the classification of openings, provides readers a comprehensive collection of modern opening theory. The exclusive annotated database. Examples from over 500 games and analyses are included.

This is your app for learning and improve your opening repertoire.

What’s New

Version 12.11.0

Added support for the latest iPad models.

App Privacy

The developer, Ted Wong, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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