Talk:Robert Jamieson (chess player)

Chess strength claim
I have a concern about the chess strength claim in the article. "According to Chessmetrics, at his peak in October 1983 Jamieson's play was equivalent to a rating of 2622, and he was ranked number 85 in the world." First, chessmetrics ratings are not directly comparable to FIDE ratings. Although this may be obvious to those in the know, I wouldn't expect everyone who reads this article to understand this. Also the January 1983 FIDE rating list gives Jamieson's rating as 2455, and the same in January 1984, 1985 and 1986 lists. (It looks like he was dropped from the 1987 list, probably due to inactivity, but reappears in July 1990 with the same 2455 rating. FIDE handled its rating lists in a dumb way back then.)  In fact 2455 is his peak FIDE rating as far as I could tell. Sorting the FIDE rating list for 1983, Jamieson's 2455 rating puts him tied for 192 through 257. Looking at the 1983 rating list (topped by Karpov at 2710 followed closely by Kasparov at 2710) I am pretty sure he wouldn't have been in the top 100. The 1983 list shows a rating of 2490 would garner a share of the 100th through 111th positions, which included Reshevsky, Parma, Nikolic, Matulovic, Keene, Gulko, and Bronstein among others. 165.189.101.177 (talk) 16:31, 24 June 2009 (UTC)


 * I agree. We should use the FIDE ranking not the Chessmetrics rating. I'll fix this up (i.e. find his peak FIDE ranking) when I have more time. Adpete (talk) 23:52, 4 April 2013 (UTC)
 * Done. 2455 was =192 in 1983 and =203 in 1984, so I put =192 (in 1983) as his peak ranking. Adpete (talk) 01:41, 5 April 2013 (UTC)