QGA with the Strange 3...Nc6: Queen's Gambit line

Queen's Gambit line, 8 moves deep. You play White.

1. d4
2. d5
3. c4
4. dxc4
5. Nf3
6. Nc6
7. d5
8. Nb8
9. e4
10. e6
11. Bxc4
12. exd5
13. Bxd5
14. c6
15. Bxf7+