1. Main line 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+ Choose a line 1. Main line 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+ 2. Grünfeld Defense: Three Knights Variation 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 3. Grünfeld Defense: Three Knights Variation, 4... Bg7 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 Close 1. Main line 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+ 2. Grünfeld Defense: Three Knights Variation 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 3. Grünfeld Defense: Three Knights Variation, 4... Bg7 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 Next