Chess Opening Theory/1. e4/1...g6/2. d4

=Modern Defense= White has established his center and Black is planning to destroy it from a distance. He may play an immediate /2...Bg7/ or delay it and play /2...d6/.

A transposition to the Caro-Kann is possible by playing /2...c6/.

Theory table
'''1. e4 g6 2. d4'''