[Event "Piatigorsky Cup 2nd"]
[Round "9"]
[Site "Santa Monica"]
[Date "1966"]
[White "Donner, Jan Hein"]
[Black "Spassky, Boris V"]
[Result "1/2-1/2"]
[ECO "E44"]
[Opening "Nimzo-Indian, Fischer Variation, 5.Ne2"]
 1. d4   Nf6
 2. c4   e6
 3. Nc3  Bb4
 4. e3   b6
 5. Nge2 O-O
 6. a3   Bxc3+
 7. Nxc3 d5
 8. b4   Bb7
 9. cxd5 Nxd5
10. Nxd5 Qxd5
11. f3   Qg5
12. Qc2  Rc8
13. e4   Qe7
14. Be3  Nd7
15. Be2  c5
16. dxc5 bxc5
17. b5   a6
18. O-O  axb5
19. Bxb5 Ba6
20. a4   h6
21. Qc3  Bxb5
22. axb5 Qd6
23. Rfd1 Rxa1
24. Qxa1 Qc7
25. Qc3  Qb7
1/2-1/2