411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. e5/3...Bf5/4. g4
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Bayonet Attack Caro–Kann Defence: Advance Variation
Caro-Kann Defence - Bayonet Attack
This aggressive move forces Black to choose a retreat square for the bishop. While occasionally played for surprise value, the move weakens White's kingside and offers Black good chances. Black's best response is Be4!, inducing White to play f3 before retreating the bishop. Play might continue 4...Be4 5. f3 Bg6 6. e6! Qd6 7. exf7 Bxf7 8. Nc3 Nd7 9. f4, with rough equality.Tari v Carlsen (2023) - Chessgames.com
Caro–Kann Defence