ChessBase

Las tablas Syzygy de todos los finales de 5 piezas y los 143 más importantes de 6 piezas, en un lápiz USB 3.0 de 128 GB, listo para usar.

Petroff Defence Powerbase 2020 is a database which contains 4821 high class games from Mega 2020 and the Correspondence Database 2020, of which 648 annotated.

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.

Dutch Defence Powerbase 2020 is a database and contains a total of 7890 games from Mega 2020 and the Correspondence Database 2020, of which 688 are annotated.

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.

King's Gambit Powerbase 2020 is a database and contains a total of 2531 games from Mega 2020 or the Correspondence Database 2020, of which 112 are annotated.

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 Benoni Powerbase 2020 is a database and contains a total of 5955 games from Mega 2020 or the Correspondence Database 2020, of which 796 are annotated.

The Volga Benko Gambit Powerbook 2020 is based on over 21 000 games from the engine room of playchess.com and also 12 000 games from Mega 2020 and the Correspondence Database 2020

Volga Benko Gambit Powerbase 2020 is a database and contains a total of 4056 games from the Mega 2020 and the Correspondence Database 2020, 307 of which are annotated.

The Najdorf Powerbook 2020 has a tree structure which is based on 3.69 million computer chess games played in the engine room of playchess.com.

The Sicilian Najdorf Powerbase 2020 is a database and contains 10119 games from the Mega 2020 and the Correspondence Database 2020, 1010 of which are annotated.