[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1968.01.21"]
[Round "10"]
[White "Bobotsov, Milko Georgiev"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 Be7 6. e3 c5 7. Be2 cxd4 8. Qxd4 O-O 9. O-O Nc6 10. Qd2 d5 11. Bxf6 Bxf6 12. cxd5 exd5 13. Rfd1 Ne7 14. Nb5 a6 15. Nbd4 Qd6 16. Rac1 Rfc8 17. Ne1 Rxc1 18. Rxc1 Rc8 19. Rd1 1/2-1/2