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...Bg6/6. Nge2/6...c5/7. h4/7...h5/8. Nf4
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Van der Wiel Attack
8. Nf4 · Caro-Kann Defence - Advance Variation, Van Der Wiel Attack
The bishop must retreat, otherwise Black's pawn structure on the kingside is shattered.
Theory table
8... Bh7
Caro–Kann Defence