1.c4 c6 2.g3 d5 3.Nf3 Nf6 4.Bg2 dxc4
White first has to make something of an effort to recover his pawn. Black can make use of this time and sometimes very sharp variations arise, in which the side with the better knowledge can have the advantage.
(Language: German and English) 8 commented games (Language: German and English)