1. Main line 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Choose a line 1. Main line 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 2. Modern Defense: Averbakh Variation, Pseudo-Sämisch 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Be3 Nf6 5. f3 3. Modern Defense: Kotov Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 4. Modern Defense: Randspringer Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5 Close 1. Main line 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 2. Modern Defense: Averbakh Variation, Pseudo-Sämisch 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Be3 Nf6 5. f3 3. Modern Defense: Kotov Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 4. Modern Defense: Randspringer Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5 Next