[Event "Sousse Interzonal"] [Site "Sousse (Tunisia)"] [Date "1967.10.15"] [EventDate "1967.??.??"] [Round "3"] [Result "1-0"] [White "Robert James Fischer"] [Black "Lhamsuren Myagmarsuren"] [ECO "C00"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "61"] 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 c5 5. Bg2 Nc6 6. Ngf3 Be7 7. O-O O-O 8. e5 {Fisher is going to use this pawn not only as a wedge in Black's position but to also make some more space for his pieces on the King side} Nd7 9. Re1 b5 {Black is going to attack on the Queen side (a basic rule-of-thumb in chess is that if your opponent attacks on one side you should attack on the opposite side)} 10. Nf1 {Moving the Knight for a King side attack and opening a line for the black Bishop} b4 11. h4 a5 12. Bf4! {overprotecting e5 so that Nf3 can later play to g5} a4 13. a3! {Blunting Black's Queen side attack by stopping a4-a3} bxa3 14. bxa3 Na5 {Myagmarsuren wants to play c5-c4 to break open the Queen side} 15. Ne3 Ba6 16. Bh3 d4 17. Nf1! {keeping the d1-h5 path open for White's Queen} Nb6 18. Ng5 Nd5 19. Bd2 Bxg5 20. Bxg5 Qd7 21. Qh5 Rfc8 22. Nd2 Nc3 23. Bf6 Qe8 {After 23...gxBf6 24. exf6 Kh8 35. Nf3 Rg8 26. Ne5 wins} 24. Ne4 g6 25. Qg5! Nxe4 26. Rxe4 c4 27. h5! cxd3 28. Rh4 {threatening 29.hxg6 fxg6 30.Rxh7!} Ra7 29. Bg2!! {Fischer sees the mate} dxc2 {if 29...Bb7 then 30.hxg6 fxg6 31.Rxh7} 30. Qh6 Qf8 {30...c1=Q+ 31.Rxc1 Rxc1+ 32.Hh2! wins in the same manner as the actual game} 31. Qxh7+! {31...Kxh7 32. hxg6+ Kxg6 33. Be4#} 1-0