[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.29"]
[Round "13"]
[White "Csom, Istvan"]
[Black "Tringov, Georgi Petrov"]
[Result "1/2-1/2"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e6 6. Nge2 Nge7 7. O-O O-O 8. d4 cxd4 9. Nxd4 d5 10. cxd5 Nxd4 11. exd4 Nxd5 12. Nxd5 exd5 13. Be3 Be6 1/2-1/2