[Event "No. 4645 Tactic: Chess, Combination"] [Site "Chicago"] [Round "0"] [White "Johnston"] [Black "Marshall"] [ECO "D31"] [Opening "QGD: 3.Nc3 Nc6"] 1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. Nf3 Nf6 5. Bf4 Bd6 6. Bg3 Ne4 7. e3 O-O 8. Bd3 f5 9. a3 b6 10. Rc1 Bb7 11. cxd5 exd5 12. Nxd5 Nxd4 13. Bc4 Nxf3+ 14. gxf3 Nxg3 15. Ne7+ Kh8 {Diagram} 16. Ng6+ hxg6 17. hxg3+ {+-} *