Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. e5/3...Bf5/4. Bd3/4...e6

A highly unusual response to 4.Bd3, this was played in Y Vasilchuk vs Bronstein, 1961, leading to a win for Vasilchuk.

=Caro-Kann Defence - Advance Variation=