411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. e5/3...Bf5/4. Nc3/4...e6/5. g4
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Van der Wiel Attack
6. g4 · Caro-Kann Defence - Advance Variation, Van Der Wiel Attack
6... Bg6 is the only feasible response for Black here.
Theory table
6... Bg6
Caro–Kann Defence