It's a Knockout
Elstner first became famous as a presenter (and later as the programme director) for the German radio broadcasting programme on Radio Luxembourg (until 1983). He started out in television with shows such as "Spiel ohne Grenzen" ("Game with No Limits"; the same as "It's a Knockout") and "Die Montagsmaler" ("The Monday Sketchers"; a game similar to "Pictionary").