Dutch Defence Powerbook 2023
The Dutch Defence Powerbook 2023 consists for the greater part of engine games (77 000), to which have been added high value material from Mega and the Correspondence Chess Database (34 000).
The Dutch Defence Powerbook 2023 consists for the greater part of engine games (77 000), to which have been added high value material from Mega and the Correspondence Chess Database (34 000).
€9.90
Italian Game Powerbook 2023
For this new edition of the Italian Game Powerbook 2023 only games from the engine room of playcess.com were used, overall 1.337.000 games.
For this new edition of the Italian Game Powerbook 2023 only games from the engine room of playcess.com were used, overall 1.337.000 games.
€9.90
2nd Move Anti-Sicilian Powerbook 2023
Powerbook based on more than 508 000 games in which White already sidesteps the main variations of the Sicilian on move 2.
Powerbook based on more than 508 000 games in which White already sidesteps the main variations of the Sicilian on move 2.
€9.90
Pirc Defence Powerbook 2025
The Pirc Defence Powerbook 2025 consists for a greater part of engine games (168 000), to which has been added high value material from Mega and the Correspondence Database (115 000).
The Pirc Defence Powerbook 2025 consists for a greater part of engine games (168 000), to which has been added high value material from Mega and the Correspondence Database (115 000).
€9.90
Sicilian Accelerated Dragon Powerbook 2022
Most of the material on which the Sicilian Accelerated Dragon Powerbook 2022 is based comes from the engine room of playchess.com: 81,000 games with the ECO codes B34-B39. In addition, there are 10,000 games from the Mega database and from correspondence
Most of the material on which the Sicilian Accelerated Dragon Powerbook 2022 is based comes from the engine room of playchess.com: 81,000 games with the ECO codes B34-B39. In addition, there are 10,000 games from the Mega database and from correspondence
€9.90
Sicilian Dragon Powerbook 2022
The major part of the material on which the Sicilian Dragon Powerbook 2022 is based comes from the engine room of playchess.com: 161 000 games. There have been added another 14000 games from Mega and from correspondence chess.
The major part of the material on which the Sicilian Dragon Powerbook 2022 is based comes from the engine room of playchess.com: 161 000 games. There have been added another 14000 games from Mega and from correspondence chess.
€9.90
Unusual Lines Powerbook 2022
The Powerbook Unusual Lines 2022 is based on more than 700,000 games of the ECO codes A00-A09, i.e. it deals with all opening beginnings other than 1.e4, 1.d4 as well as 1.c4.
The Powerbook Unusual Lines 2022 is based on more than 700,000 games of the ECO codes A00-A09, i.e. it deals with all opening beginnings other than 1.e4, 1.d4 as well as 1.c4.
€9.90
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.
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
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.
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
Petroff Defence Powerbook 2020
The major part of the material on which the Petroff Defence Powerbook 2020 is based comes from the engine room of playchess.com: 260 000 games. This imposing number is supplemented by another 11 000 from Mega and from correspondence chess.
The major part of the material on which the Petroff Defence Powerbook 2020 is based comes from the engine room of playchess.com: 260 000 games. This imposing number is supplemented by another 11 000 from Mega and from correspondence chess.
€9.90
King's Gambit Powerbook 2020
The major part of the material on which the King's Gambit Powerbook 2020 is based is sourced from the engine room of playchess.com: 30 000 games. Another 3500 games from Mega and from correspondence chess have been added to this corpus.
The major part of the material on which the King's Gambit Powerbook 2020 is based is sourced from the engine room of playchess.com: 30 000 games. Another 3500 games from Mega and from correspondence chess have been added to this corpus.
€9.90
Ben-Oni Powerbook 2020
The Ben-Oni Powerbook 2020 consists for the greater part of engine games (44 600), to which has been added high-value material from Mega and the Correspondence Database (23 600).
The Ben-Oni Powerbook 2020 consists for the greater part of engine games (44 600), to which has been added high-value material from Mega and the Correspondence Database (23 600).
€9.90