1. Main line 1. Nf3 Nf6 2. g3 d5 Choose a line 1. Main line 1. Nf3 Nf6 2. g3 d5 2. Smyslov Variation 1. Nf3 Nf6 2. g3 g6 3. b4 3. Spassky Variation 1. Nf3 Nf6 2. g3 b5 4. Symmetrical Defense 1. Nf3 Nf6 2. g3 g6 5. Wahls Defense 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5 Close 1. Main line 1. Nf3 Nf6 2. g3 d5 2. Smyslov Variation 1. Nf3 Nf6 2. g3 g6 3. b4 3. Spassky Variation 1. Nf3 Nf6 2. g3 b5 4. Symmetrical Defense 1. Nf3 Nf6 2. g3 g6 5. Wahls Defense 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5 Next