(A42) Randspringer
1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 f5
(A42) Pterodactyl
1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 c5 5. Nf3 Qa5
(A42) Kotov
1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nc6