The website chessmetrics.com is a database of player ratings and results throughout chess history, and endeavours to place player strengths in historical context, while compensating for the different calculation methods which have been used, as well as retrospectively rating performances which occurred before the introduction of international ratings in 1970. By January 1965, Sanguineti had reached a chessmetrics rating of 2677, good for #18 in the world. He had performed at 2699 at Varna 1962. With a 2600 performance generally denoting grandmaster standard, it seemed quite clear that Sanguineti deserved a promotion to the higher title, based upon his consistently strong results in good calibre events.