1. Main line 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Choose a line 1. Main line 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 2. Main line, 4... Bg7 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 3. Grünfeld Variation 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Be2 4. Tarzan Attack 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. Qd2 5. Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 O-O Close 1. Main line 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 2. Main line, 4... Bg7 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 3. Grünfeld Variation 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Be2 4. Tarzan Attack 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. Qd2 5. Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 O-O Next