[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.25"]
[Round "11"]
[White "Ivkov, Borislav"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. Rc1 b6 8. cxd5 Nxd5 9. Bxe7 Nxe7 10. e3 Bb7 11. Bd3 1/2-1/2