411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. e5/3...Bf5/4. Nc3/4...e6/5. g4/5...Bg6
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Van der Wiel Attack
5... Bg6 · Caro-Kann Defence - Advance Variation, Van Der Wiel Attack
6. Ne2 is the usual response, planning to continue to harass White's bishop with Nf4.
Theory table
6. Nge2
Caro–Kann Defence