[Event "Alekhine memorial"]
[Round "11"]
[Site "Moscow"]
[Date "1971.12.08"]
[White "Olafsson, Fridrik"]
[WhiteElo "2570"]
[Black "Petrosian, Tigran V"]
[BlackElo "2640"]
[Result "1/2-1/2"]
[ECO "A16"]
[Opening "English Opening"]
 1. c4   Nf6
 2. Nc3  g6
 3. e4   d6
 4. d4   Bg7
 5. Be2  O-O
 6. Bg5  Nbd7
 7. Qd2  e5
 8. d5   Nc5
 9. Bf3  a5
10. Nge2 c6
11. Ng3  cxd5
12. Nxd5 Ne6
13. Nxf6+ Bxf6
14. Bxf6 Qxf6
15. O-O  Nd4
16. Bd1  
1/2-1/2