[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.17"]
[Round "4"]
[White "Uhlmann, Wolfgang"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Qe2 cxd4 7. exd4 Be7 8. O-O O-O 9. Nc3 a6 10. Bg5 b5 11. Bb3 Bb7 12. Rfd1 Nbd7 13. d5 exd5 14. Nxd5 Bxd5 15. Bxd5 Nxd5 16. Rxd5 Bxg5 17. Nxg5 h6 18. Qd2 hxg5 19. Rxd7 Qf6 20. Rd1 Rae8 1/2-1/2