[Event "Mar del Plata International-20"]
[Site "Mar del Plata"]
[Date "1957.03.15"]
[Round "1"]
[White "Casas, Fernando"]
[Black "Keres, Paul"]
[Result "0-1"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Ne2 d5 7. O-O cxd4 8. exd4 dxc4 9.
Bxc4 Nbd7 10. Bb3 Nb6 11. Nf4 Bd7 12. Nd3 Be7 13. Ne5 Rc8 14. Bg5 Bc6 15. Qe2 Bd5 16. Nxd5
Nfxd5 17. Bd2 Qd6 18. Rac1 Bf6 19. Rfd1 Rfd8 20. Qe4 Rxc1 21. Rxc1 Ne7 22. Be3 Nbd5 23.
Ng4 Nc6 24. Bc2 g6 25. Nxf6+ Nxf6 26. Qf3 Nd5 27. Bb3 Kg7 28. h4 h5 29. a3 Rd7 30. Rc5
Nce7 31. Ba4 Rc7 32. Rxc7 Qxc7 33. Bd2 Qc4 34. Bb3 Qxd4 35. Bc3 Nxc3 36. Qxc3 Qxc3 37.
bxc3 Kf6 38. Kf1 Nd5 39. c4 Nc3 40. Ke1 Ke5 41. Kd2 Kd4 0-1