London System
also known as: Bf4 System
1. d4 Nf6 2. Nf3 g6 3. Bf4
Named after
Named for the London tournament of 1922, where several masters (Alekhine, Rubinstein and Capablanca among the field) employed the early Bf4 setup.
Origin
The 1922 event fixed the name; the setup existed earlier as a workmanlike anti-Indian formation.
The story
For ninety years the London was the accountant of openings — solid, safe, and mocked ("the system for people who don't want to learn openings"). The internet era transformed it: online blitz rewards low-maintenance setups, Gata Kamsky proved it could beat anyone, and then Magnus Carlsen started winning brilliancies with it — his celebrated 2019 demolitions among them — at which point the sneering stopped. The same Bf4-e3-c3 triangle now appears at every level from beginner to world champion, the most dramatic status climb of any opening in the modern era.
Why it matters
The definitive "system" opening: nearly identical development against any Black setup, minimal forced theory, real attacking schemes (the h4 lunges, the e5 clamp). Its rise is also a story about how internet chess changed what openings are FOR.
Notable games
- Carlsen's 2019 London brilliancies (the opening's status-climb made visible)
- Kamsky's decades of London wins