London System

Overview

The London System (1. d4 d5 2. Bf4) is a solid, low-theory opening system for White where the setup is largely independent of Black's response. White develops the dark-squared bishop before playing e3, building a resilient pawn pyramid and preparing kingside play.

Position after 1. d4 d5 2. Bf4

Key Ideas

• White develops Bf4 early, before playing e3, to avoid locking in the bishop.
• The typical setup is d4, Bf4, e3, Nf3, Bd3, Nbd2, c3 — creating a solid pawn pyramid.
• White's plan often involves h3, followed by potential kingside expansion with g4 or Ne5.
• The system is very flexible and can be played against almost any Black setup.

Main Variations

History

The London System gained its name from the 1922 London tournament. Once considered dull, it was popularized by Kamsky, Jobava, and especially Magnus Carlsen who used it to great effect in rapid and blitz events.