[Event "Sarajevo-11"]
[Site "Sarajevo"]
[Date "1968.03.23"]
[Round "4"]
[White "Lein, Anatoly"]
[Black "Kavalek, Lubomir"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. d4 c6 7. O-O Qa5 8. h3 e5 9. Be3 Nbd7 10. Rc1 Re8 11. Qd2 Qd8 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Qxd8 Rxd8 15. Rfd1 Rxd1+ 16. Rxd1 Be6 17. b3 Bf8 18. Na4 Nd7 1/2-1/2