[Event "October Revolution 50years"]
[Site "Moscow"]
[Date "1967.05.21"]
[Round "1"]
[White "Bobotsov, Milko Georgiev"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 cxd4 8. exd4 Be7 9. O-O O-O 10. Re1 Nf6 11. Bg5 b6 12. Qe2 Bb7 13. Rad1 Nb4 14. Bb1 Rc8 15. Ne5 Nbd5 16. Rd3 Ba6 17. Nxd5 Nxd5 18. Bxe7 Qxe7 19. Rh3 Bxe2 20. Bxh7+ Kh8 1/2-1/2