1.e4
c6
2.d4
d5
3.exd5
cxd5
4.Bd3
In the Exchange Variation the bishop takes up an active position. Black cannot do likewise, because his cleric remain locked in behind the barrier of pawns. The simplicity of the position similar to theat of the Advance Variation with 3....Bf5; 4.Nf3, appeals to some players who do not like to introduce complications early in the game. The dull symmetry does not prevent volcanic eruptions hater in the game, especially if Black's concentration slips and weaknesses start to appear on the landscape.