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Top class material was used for the King’s Indian Powerbook 2023: over 120 000 games from the Mega and from correspondence chess, and in addition more than 297 000 games from the engine room of playchess.com, in all 420 000 games.

The London System Powerbook 2023 is based on more than 366 000 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.

The Alekhine Defence Powerbook 2023 is based on over 87,000 games from the engine room of playchess.com as well as 18,000 games from the Mega 2023 and the Correspondence Database 2022.

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).

Smyslov cultivated a clear positional style and even in sharp tactical positions often relied more on his intuition than on concrete calculation of variations. Let our authors introduce you into the world of Vasily Smyslov.

1...e5 against the English is a theoretically sound response with good chances of equality or better in all variations, and in this video series I provide a complete Black repertoire based on this move.

What is the Hippopotamus system of defence? The idea is that, at the beginning of the game, Black develops within his own first three ranks. He constructs a solid, flexible and hopefully stable position, awaiting events. At the right moment, he will strik

The two DVDs offer you the chance to solve 66 exercises with multiple questions. These exercises are presented in the interactive format, which makes them accessible for players of different strengths as we will go through the thought process step by step

The two DVDs offer you the chance to solve 66 exercises with multiple questions. These exercises are presented in the interactive format, which makes them accessible for players of different strengths as we will go through the thought process step by step

The two DVDs offer you the chance to solve 66 exercises with multiple questions. These exercises are presented in the interactive format, which makes them accessible for players of different strengths as we will go through the thought process step by step

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.

The Semi-Slav, Chebanenko system and the Slav triangle are solid and flexible weapons for Black. The repertoire examined on this DVD meets them all in a provocative way.

IM Andrew Martin gets you ready to play the Barry in your own games. Players under 2200 will benefit the most. It turns out that after 1 d4 Nf6 2 Nf3 g6 3 Nc3!? d5 4 Bf4 Bg7, White has no less than four dangerous moves, 5 e3, 5 Qd2, 5 Nb5 and 5 h3.

Do you always have problems finding a good antidote to the French (1.e4 e6 2.d4 d5)? Thanks to this 60 minutes course on the move 3.Bd3 you don't have to look any further!

Besides in-depth theory and exciting tactical exercises in the Scotch Game, this video course also includes a bonus section on the Scotch Gambit (1.e4 e5 2.Nf3 Nc6 3.d4 cxd4 4.Bc4), a lively variation often leading to very dynamic positions.