ChessBase

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 Powerbase 2019 is a database and contains a total of 3558 games from Mega 2019 or the Correspondence Database 2018, 97 of which are annotated.

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.

The QGA PowerBase 2019 is a database and contains a total of 9,440 games, 170 of which are annotated.

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.

The London System PowerBase 2019 contains 9105 games of which 113 are annotated.

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 216 000 games, most of them sourced in the engine room of playchess.

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.

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.

Powerbook based on more than 455 000 games in which White already sidesteps the main variations of the Sicilian on move 2.

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.

Las tablas Syzygy de todos los finales hasta con 5 piezas y las 27 más importantes con 6 piezas. Son diferentes. Más eficientes. Menor espacio. Mayor rendimiento. La perfección en el final de la partida.