ECO D02
Easy
London System
Flexible White setup (d4, Bf4, e3, Nf3) — popular in blitz and to avoid heavy theory.
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Recommended level
Beginner to club (~800–2000). Low memorization; focus on plans.
Overview
White develops without early e4 commitment. Bf4 often avoids e3–Bf1 blockage. Black can meet with …d5, …e6, or a kingside fianchetto.