George indeed possessed a remarkable memory and was equally good at analysis, blindfold, simultaneous and cross-board play. By the turn of the century he was probably one of Scotland's top four players along with Jordan, Stewart and Ferrie. In 1905 he represented Great Britain against the USA, but his greatest achievement was probably the hat-trick of Scottish Championships in 1905, 1906 and 1907.
Unfortunately Buchanan's health began to fail soon afterwards, and the newspapers report his death by tuberculosis on the 5th of August 1910 (aged 34) at his home in Holmhead Crescent, Cathcart, on the South side of the city. I suspect however that his death was in fact caused by silicosis rather than tuberculosis, as George's profession was lapidary which involved stone-cutting!