2...dxc4 3.e4 e5 4.Nf3 Bg4 5.Bxc4 Bxf3: Queen's Gambit line

Queen's Gambit line, 7 moves deep. You play White.

1. d4
2. d5
3. c4
4. dxc4
5. e4
6. e5
7. Nf3
8. Bg4
9. Bxc4
10. Bxf3
11. Qxf3
12. exd4
13. Qxf7#