[Event "IBM"]
[Site "Amsterdam"]
[Date "1966.07.26"]
[Round "4"]
[White "Botvinnik, Mikhail"]
[Black "Pomar Salamanca, Arturo"]
[Result "1-0"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bb5 Bb4 9. Ne5
Qa5 10. Bxc6+ bxc6 11. O-O Bxc3 12. bxc3 Rc8 13. c4 O-O 14. g4 Bg6 15. c5 Ne4 16. f3 Nd2
17. Rf2 Nc4 18. Nxc4 dxc4 19. Bd6 Rfe8 20. e4 f5 21. Qc2 fxe4 22. fxe4 Qa3 23. Re1 Qh3 24.
Rg2 Rcd8 25. Rg3 Qh6 26. Qxc4 Qd2 27. Qc3 Qxa2 28. Rg2 Qa6 29. h4 Rd7 30. h5 Bf7 31. Ra1
Qc8 32. Qf3 Qd8 33. g5 g6 34. h6 e5 35. Bxe5 Rb7 36. Qf4 a5 37. Rf2 Bb3 38. d5 cxd5 39. c6
Ra7 40. c7 Qe7 41. Bd6 1-0