[Event "URS-ch25 Final"]
[Site "Riga"]
[Date "1958.02.13"]
[Round "19"]
[White "Averbakh, Yuri L"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 O-O 9. O-O Be6 10. f3 Nbd7 11. a4 Qc7 12. Rf2 Rad8 13. a5 Qc6 14. Bf1 d5 15. exd5 Bxd5 16. Nxd5 Nxd5 17. Qe1 Nxe3 18. Qxe3 Nc5 19. Re2 Rd3 20. Qxe5 Nxb3 21. cxb3 Bf6 22. Qe4 1/2-1/2