[Event "Capablanca memorial 2nd"]
[Round "11"]
[Site "Havana"]
[Date "1963"]
[White "Perez Perez, Francisco Jose"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "E24"]
[Opening "Nimzo-Indian, Saemisch Variation"]
 1. d4   Nf6
 2. c4   e6
 3. Nc3  Bb4
 4. a3   Bxc3+
 5. bxc3 c5
 6. e4   Qa5
 7. e5   Ne4
 8. Bd2  Nc6
 9. Ne2  b6
10. f4   cxd4
11. Nxd4 Ba6
12. Nxc6 dxc6
13. Qf3  f5
14. exf6 Nxd2
15. Qxc6+ Kf7
16. Qd7+ Kxf6
17. Qd4+ Kf7
18. Qd7+ Kf6
19. Qd4+ Kf7
20. Qd7+ Kf6
1/2-1/2