[Event "Bled 30th Anniversary"]
[Site "Bled"]
[Date "1961.09.19"]
[Round "11"]
[White "Portisch, Lajos"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 b5 7. e4 g5 8. Bg3 Nxe4 9. Qf3 Bxc3+ 10. bxc3 exd5 11. cxd5 O-O 12. Bd3 f5 13. Bxe4 fxe4 14. Qe3 Qf6 15. h4 g4 16. Ne2 d6 17. O-O Nd7 18. Bf4 Rf7 19. Qg3 Ne5 20. Bxe5 Qxe5 21. Qxe5 dxe5 22. Rad1 Bb7 23. Rd2 Rd8 24. Rfd1 Rfd7 25. c4 1/2-1/2