Talk:Chess Opening Theory/1. e4/1...e5/2. d4/2...exd4/3. c3/3...dxc3/4. Bc4/4...cxb2/5. Bxb2/5...Nf6/6. e5/6...d5/7. exf6/7...Bb4/8. Bc3/8...Bxc3/9. Nxc3/9...dxc4