[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.28"]
[Round "12"]
[White "Tringov, Georgi Petrov"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. e5 dxe5 5. Nxe5 e6 6. Bb5+ Nbd7 7. Qf3 Bd6 8. Nxd7 Nxd7 9. Ne4 Be7 10. Qg3 O-O 11. Nd6 Nb6 12. Nxc8 Rxc8 13. Be2 c4 14. O-O Nd5 15. Qf3 Qd7 16. c3 Rfd8 17. Rd1 1/2-1/2