 There were some notable outright second places too, at Halle 1974 (after Tal), Bucharest 1975 and Trnava 1980 (after Sturua).At Zinnowitz 1971, Sandomierz 1976 and Potsdam 1985, he shared second place, at Bucharest 1973 came third, and at Camagüey 1974, finished fourth.Knaak has written a number of books and articles about chess, mostly for ChessBase's publishing wing, where he has been a full-time employee since 1994.