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London System Powerbook 2019

The completely new Powerbook London System 2019 is based on games which start in different ways and belong to different ECO codes, but where in each case White plays d4 and Bf4 and also does without c4. This way of starting the game has long since cast off its image as purely an opening for amateurs; world class players such as So, Kramnik, Grischuk, Vachier-Lagrave, Aronian and Karjakin play the opening with both colours and the London book is based on 45 games by Magnus Carlsen. In order to guarantee a high level of reliability for the statistics, the threshold for accepting games was set at a very high level. Thus the basis for the Powerbook consists of 205 000 engine games as well as 11 800 games from Mega 2019 + Correspondence Database 2018.

One of the basic positions of the London System can be seen in the following diagram:

Statistics suggest 6...cxd4, and actually after 7.exd4 the modern 7...Nh5 is a very trendy variation. It is possible to then study the various lines with a factor of 100:1 (London Powerbook to games in Mega or Online Database). Is it all over with the London System then? Certainly not. Just the delaying of Sf3 on its own offers White additional possibilities, as is proved by the statistics of the Powerbook.

The London Powerbook 2019 is a comprehensive special opening book that allows you to check your opening lines and search for promising additions to your repertoire. It's an opening book that you can use with your Fritz or ChessBase program. It does not come with a database - so there are no games included.
 


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Londres

The Queen’s Pawn games are a series of openings in which, after 1.d4 d5, White does without the advance c2-c4 in the early stages of the game or even completely. This may mean less pressure being put on Black’s position, but in return White is mostly able to deploy his forces without disruption. One very popular system, above all among amateurs, is, e. g., the rapid development of the Nf3 and Bf4, the London System. White’s setup is apparently simple: e3, Bd3, Nbd2 and c3 are meant to follow. If necessary, h3 will create a retreat square on h2 for the Bf4, so as to be able to avoid a threatened exchange after ...Nh5. An additional attraction of White’s setup is that it can be employed not only after 1.d4 d5, but against almost all black setups after 1.d4.

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