1. Main line 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 Choose a line 1. Main line 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 2. Advance Line 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 c4 Close 1. Main line 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 2. Advance Line 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 c4 Next