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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 €
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 €
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 €
Fritz Powerbook 2022 Upgrade from Powerbook 2021
Fritz Powerbook 2022 Upgrade from Powerbook 2021
The current openings theory with 1.7 million games
39,90 €
Fritz Powerbook 2022
Fritz Powerbook 2022

La théorie des ouvertures à jour, avec 1,7 mio de parties.

69,90 €
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

Près d'un million de parties provenant de la salle des machines de playchess.com forment la base de l'English Powerbook 2021, avec en plus 105'000 parties provenant de Mega et de la Corr.

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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