7. h4 French Defense Winawer line for White

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Avatar of TheFiancheetoGambit

Recently, I have started learning the French Defence with 3. Nc3 for White, and I noticed a trend in many online forums about the Winawer that suggests 7. h4 to be the most challenging move for Black. I would like to try learning this, can anyone recommend some online resources I could use to get an overview of this, and potentially dive deeper? For now, I am playing some 2. b3 stuff to avoid theory but I want to start playing theoretically proper openings now (3. Nc3 French, 2. Nf3 3. d4 open Sicilians, c3 d3 Italians, etc.)

Here is the variation in question:

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Avatar of TheFiancheetoGambit

Just trying to revive this to see if anyone has a reply now