[Event "No. 4558 Tactic: Chess, Combination"] [Site "Paris"] [Round "0"] [White "Kahn"] [Black "NN"] [ECO "D17"] [Opening "Slav: Czech Defence"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Nh4 Bd7 7. e3 b5 8. Nf3 e6 9. Ne5 a6 10. Qf3 Ra7 11. g4 Bd6 12. g5 Bxe5 13. dxe5 Nd5 14. Ne4 O-O 15. Rg1 Nb4 {Diagram} 16. Nf6+ Kh8 (16... gxf6 17. gxf6+ Kh8 18. Rg7 Rg8 19. Rxh7+ Kxh7 20. Qh5No. ) 17. Qh5 h6 (17... gxf6 18. Rg3 $18) 18. g6 Nc2+ (18... fxg6 19. Qxg6 $18) 19. Ke2 Be8 20. Qxh6+ gxh6 21. g7No. *