1. Main line 1. e4 d5 2. Main line, 2. b3 1. e4 d5 2. b3 3. Anderssen Counterattack 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 4. Anderssen Counterattack, Collijn Variation 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4 5. Anderssen Counterattack, Goteborg System 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Guest preview: 5 of 45 lines Unlock the full course, save your progress, and keep training across every line. Start your 14-day trial Next