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French Defence Powerbook 2022
The main part of the material on which the French Powerbook 2022 is based comes from the playchess.com engine room: 655,000 games. An impressive number to which 87,000 games from correspondence chess and the Mega were added.
French Defence Powerbase 2022
The French Defence Powerbase 2022 is a database and contains 10275 games from the Mega 2022 and the Correspondence Database 2022, 659 of which are annotated.
Sicilian Paulsen Powerbook 2022
Most of the material on which the Sicilian Paulsen Powerbook 2022 is based comes from the engine room of Schach.de: 426,000 games. In addition to this impressive amount, there are 43,000 games from the Mega and from correspondence chess.