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Najdorf Powerbook 2022
Najdorf Powerbook 2022
The Najdorf Powerbook 2022 has a tree structure which is based on 3.86 million computer chess games played in the engine room of playchess.com.
9,90 €
French Defence Powerbook 2022
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.
9,90 €
Sicilian Paulsen Powerbook 2022
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.
9,90 €
Nimzo-Indian Powerbook 2022
Nimzo-Indian Powerbook 2022
How to 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 356 000 games, most of which were played by engines.
9,90 €
Queen's Gambit Declined Powerbook 2022
Queen's Gambit Declined Powerbook 2022
Most of the material which the Queen's Gambit Declined Powerbook 2022 is based on comes from 730,000 games from the engine room of Schach.de. In addition to this impressive number, there are almost 50,000 games from the Mega Database, and from corresponde
9,90 €
Grünfeld Defence Powerbook 2021
Grünfeld Defence Powerbook 2021
The major part of the material on which the Grünfeld Defence Powerbook 2021 is based comes from the engine room of playchess.com: 232 000 games. To this imposing mass we have added another 70 000 games from Mega and from correspondence chess.
9,90 €
London System Powerbook 2021
London System Powerbook 2021
The London System Powerbook 2021 is based on more than 295 000 games or game fragments from different opening moves and ECO codes; what they all have in common is that White plays d4 and Bf4 but does not play c4.
9,90 €
Slav and Semi-Slav Powerbook 2021
Slav and Semi-Slav Powerbook 2021
For the Slav and Semi-Slav Powerbook 2021 the ratings average was set at 2400. 1.76 million games from the engine room of playchess.com met this threshold, to which were added over 80 000 games played by humans.
9,90 €
Caro-Kann Powerbook 2021
Caro-Kann Powerbook 2021
The major part of the material on which the Caro-Kann Powerbook 2021 is based is taken from the engine room of playchess.com: 736 000 games. To that imposing corpus we have added another 58 000 games from Mega and from correspondence chess.
9,90 €
English Opening Powerbook 2021
English Opening Powerbook 2021
Almost 1 million games from the engine room of playchess.com form the basis of the English Powerbook 2021, with in addition 105 000 games from Mega and from correspondence chess.
9,90 €
King's Indian Powerbook 2021
King's Indian Powerbook 2021
Top class material was used for the King’s Indian Powerbook 2021: over 100 000games from the Mega and from correspondence chess, and in addition more than 264 000 games from the engine room of playchess.com, in all 372 000 games.
9,90 €
Ruy Lopez Powerbook 2021
Ruy Lopez Powerbook 2021
The Ruy Lopez Powerbook 2021 has a tree structure based on 2.23 million computer chess games played in the engine room of playchess.com.
9,90 €
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