Ivkov, Borislav VS Knaak, Rainer 1980.09.23

[Event "Chigorin Memorial-14"]
[Site "Sochi"]
[Date "1980.09.23"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Knaak, Rainer"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[BlackElo "2535"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Bd7 6. Nc3 Nf6 7. d4 Be7 8. d5 Nb8 9. Bxd7+ Nbxd7 10. O-O O-O 1/2-1/2