Achievements He tied for 5-7th at Bad Oeynhausen 1941 (8th German Chess Championship, Paul Felix Schmidt and Klaus Junge won). Shared 1st with Lothar Schmid at Wiessenfels 1947 (Soviet Zone-ch). Shared 10th at Bad Pyrmont 1949 (West Germany-ch, Efim Bogoljubow won). Took 2nd, behind Rudolf Teschner, at Düsseldorf 1951 (GER-ch). And took 5th at Sofia 1957 (zonal, Miroslav Filip won). Pfeiffer won six times for West Germany in Chess Olympiads (1950-1960), and won two bronze medals (team and individual) in the 9th Chess Olympiad at Dubrovnik 1950.