FM Zhalmakhanov Ramazan - IM Suleymenov Alisher, London system, Blitz chess

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Blitz chess (also known as speed or fast chess) is a type of chess in which each player is given less time to consider their moves than normal tournament time controls allow. Openings, tactics and strategy are same.

The London System is a chess opening that usually arises after 1.d4 and 2.Bf4, or 2.Nf3 and 3.Bf4. It is a "system" opening that can be used against virtually any black defence and thus comprises a smaller body of opening theory than many other openings. The London System is one of the Queen's Pawn Game openings where White opens with 1.d4 but does not play the Queen's Gambit. It normally results in a closed game.

Sverre Johnsen and Vlatko Kovačević, in the introduction to their 2005 book Win with the London System, state:

Basically the London is a set of solid lines where after 1.d4 White quickly develops his dark-squared bishop to f4 and normally bolsters his centre with pawns onc3 and e3 rather than expanding. Although it has the potential for a quick kingside attack, the white forces are generally flexible enough to engage in a battle anywhere on the board. Historically it developed into a system mainly from three variations:

1.d4 d5 2.Nf3 Nf6 3.Bf4
1.d4 Nf6 2.Nf3 e6 3.Bf4
1.d4 Nf6 2.Nf3 g6 3.Bf4

The corresponding Encyclopaedia of Chess Openings codes are D02, A46, and A48.

If White is going to play the London System, it is now thought to be more accurate to play 2.Bf4 instead of 2.Nf3 and 3.Bf4