<prompt> Qedela umusho olandelayo: Wanqoba iChampionship yase-Argentina ngo-1974 nge-13.516, eyisiqu sakhe sesithathu. Ukuze  <response>: I-Olympia enhle ka-1974, wayesesikebheni sesibili, futhi wenza u-815. Waya eCanada ngo-1974 ePan American Chess Championship eWinnipeg, lapho afika khona endaweni yesibili ngo-1215 ngemuva kweqhawe laseMelika uWalter Browne. Ukuphazamiseka okungalindelekile emdlalweni wakhe omuhle kwaba umqhudelwano we-Buenos Aires CA ka-1975, lapho akwazi khona ukuphatha u-4.511. Kodwa walulama ngokushesha. Wathola isihloko somqhudelwano eFortalza Zonal 1975 ngo-1317, amaphuzu angu-1.5 ngaphambi komgijimi, uMiguel Quinteros. Lokhu kwaphinde kwamenza wakwazi ukungenela umqhudelwano weWorld Championship. Waba ngowesine emqhudelwaneni wase-Argentina ngo-1975 eBuenos Aires ngo-13.519. Khona-ke eMar del Plata ngo-1976, wabambana neqembu lokuqala ngo-1115. Ngawo lowo nyaka wanqoba futhi eBuenos Aires Konex chess tournament. 