Changes

<ref>[https://koenigswinter.branchen-info.net/fp_1301961.php EuroChess Zentrale Martin Stamer Königswinter - Verlag]</ref> <ref>[https://www.wer-zu-wem.de/firma/eurochess.html EuroChess Zentrale Spielzeughersteller aus Königswinter in der Firmendatenbank wer-zu-wem.de]</ref> <ref>[http://www.eurochess.de/ Eurochess.de - Dein Schachportal] (German)</ref>, and former local politician and mayoral candidate of Königswinter as member of the [https://en.wikipedia.org/wiki/Social_Democratic_Party_of_Germany Social Democratic Party of Germany]<ref>[http://www.general-anzeiger-bonn.de/region/Martin-Stamer-ist-B%C3%BCrgermeisterkandidat-der-K%C3%B6nigswinterer-Sozialdemokraten-article187642.html Martin Stamer ist Bürgermeisterkandidat der Königswinterer Sozialdemokraten] by [https://www.freischreiber.de/profiles/guido-krawinkel/ Guido Krawinkel], [https://en.wikipedia.org/wiki/General-Anzeiger General-Anzeiger Bonn], December 12, 2008 (German)</ref>. From 1994 until 1997 Martin Stamer was exclusive distributor of [[IsiChess]] by [[Gerd Isenberg]] and exclusive European distributor of [[MChess]] by [[Marty Hirsch]], which won the [[WMCCC 1995|World Microcomputer Chess Championship 1995]] in Paderborn.