London System

London System

1.d4 d5 2.Nf3 Nf6 3.Bf4
The London system is a group of openings which begin with 1.d4, with Bf4 coming soon after and White abstaining from the move c2-c4. This is a rock-solid opening where White develops soundly but modestly.

Pros:

Hard for Black to get active play
Difficult for Black to avoid
A very sound way of getting a playable middlegame
Cons:

Less chance of an attack
Puts little immediate pressure on Black
The Bf4 can be somewhat exposedv