411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. f3/3...dxe4
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Caro–Kann Defence: Fantasy Variation Tartakower VariationMaróczy Variation
3... dxe4 · Fantasy Variation
A perfectly playable variation for Black, but they must know the lines to avoid certain pitfalls. White will have multiple opportunities to strike at f7 if Black goes wrong.
White almost always recaptures with fxe4.
Theory table
4. fxe4
References