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This way of starting the game has long since shed its image as an opening for amateurs, world class players like So, Kramnik, Grischuk, Vachier-Lagrave, Aronian and Karjakin play the opening with both colours, and included in the basis for the London Book there are also 126 games by Magnus Carlsen. In order to guarantee a high degree of reliability in the statistics a threshold for the acceptance of games and parts of games was set at 2300. Thus the Powerbook is based on 263 000 engine games and also 32 000 games from Mega 2021 + Correspondence Database 2020.

n'importe lequel
juil. 2021
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