Queen's Gambit Declined Powerbook 2013 - Chessbase - Chess

Compared to its predecessor the Powerbook for the Queen’s Gambit Declined has been completely renewed. As a counterweight to the over 90 000 games from the engine room of playchess.com which are now in it, we have included an almost equal number of games played by human beings. These come to a lesser extent from correspondence chess. The program as whole allows evaluations to be made on the basis of 180 000 games. It is based on ECO codes D30-D42 as well as D50-D69, which include. e.g., the Lasker Variation, the Tartakower Defence, the Ragosin Variation, the Exchange Variation and the Cambridge Springs Variation.