A42Modern Defence
Averbakh System
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4
A42Pterodactyl Defence
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 c5 5.Nf3 Qa5
A42Modern Defence
Averbakh System, Randspringer Variation
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 f5
A42Modern Defence
Averbakh System, Kotov Variation
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 Nc6