Chess Opening Theory/1. a4/1...a5/2. h4/2...h5/3. Ra3/3...Ra6/4. Rhh3/4...Rhh6

1. a4 a5 2. h4 h5 3. Ra3 Ra6 4. Rhh3 Rhh6
By this time, both sides have pushed flank pawns and 'developed' their rooks. This position can lead to a drawish game if black continues the symmetrical moves.

1.a4 a5 2.h4 h5 3.Ra3 Ra6 4.Rhh3 Rhh6