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English Opening Powerbook 2019
For the English Powerbook only high value material above all was used: “Only” 62 000 games from Mega and from correspondence chess. To those were added 472 000 games from the engine room on Playchess.com.
Bird Opening Powerbook 2019
Good material on the Bird Opening is rare. So the Powerbook on its basis of just 58 000 games is welcome; the majority were played by engines.
Nimzo-Indian Powerbook 2019
How do you play the Nimzo-Indian? Does White have promising variations available to him or can Black construct a water-tight repertoire? The answers are provided by the Powerbook based on more than 327 000 games, most of which were played by engines.
Queen's Gambit Accepted Powerbook 2019
How do you play the Queen's Gambit Acceptedt? Does White have promising variations or can Black construct a water-tight repertoire? The Powerbook provides the answers based on 195 000 games, most of them played by engines.
London System Powerbook 2019
What is the trend in the London System? To play with or without Nf3? You can find the answers in the completely new powerbook - based on more than 187 000 games, most of them sourced in the engine room of playchess.
The Slav and Semi-Slav Powerbook 2018
Based on over 1.6 million games, of which some 5% were played by humans, the related areas of the Slav and the Semi-Slav are dealt with together in this Powerbook.
Queen's Gambit Declined Powerbook 2018
In order to make use of the highest possible rated games, the minimum rating has been raised. Thus for the Queen’s Gambit Powerbook 40 000 games from the Mega and correspondence chess were included as well as 620 000 from the engine room on playcchess.
Ruy Lopez Powerbook 2018
Once again we have used exclusively games from the engine room on playchess.com for the Ruy Lopez Powerbook 2018. The tremendous number of 1.8 million games in the Ruy Lopez allows meaningful statistical analyses even amongst side variations.
The Accelerated Dragon Powerbook 2018
Roughly 78.000 games from the engine room of Playchess as well as just 10.000 games played by humans constitute the basis of the Accelerated Dragon Powerbook.
King's Indian Defence Powerbook 2018
The new King's Indian special book is based on 241 000 games from the Engine room plus 76.000 "human" games – predominantly from Mega 2018, rounded out with top games from the correspondence chess database.
Caro-Kann Powerbook 2018
The Caro-Kann Powerbook 2018 is based on over 719 000 games, of which more than 690 000 come from the engine room on playchess.com.