The Alapin Variation (1.e4 c5 2.c3) offers a simple yet highly effective solution to all major Sicilian lines, by sidestepping them with 2.c3.
39,90 €
How do you play the Queen's Gambit Accepted? Does White have promising variations or can Black construct a water-tight repertoire? The Powerbook provides the answers based on 300 000 games, most of them played by engines.
9,90 €
The Queen's Gambit Accepted Powerbase 2025 is a database and contains a total of 11827 games from Mega 2025 and the Correspondence Database 2024, of which 240 are annotated.
9,90 €
This course dives into one of the most dynamic and practical ideas in modern chess: using early pawn thrusts like b5 or b4!
9,90 €
Rossolimo-Moscow Powerbase 2025 is a database and contains a total of 10950 games from Mega 2025 and the Correspondence Database 2024, of which 612 are annotated.
9,90 €
The greater part of the material on which the Rossolimo/Moscow Powerbook 2025 is based comes from the engine room of playchess.com: 263.000 games. This imposing amount is supplemented by some 50 000 games from Mega and from Correspondence Chess.
9,90 €