"Problemschach." . . "Chess End games." . . . . "Theorie." . . . . . . . . . "Adventures in composition; the art of the two-move chess problem"@en . "Adventures in composition; the art of the two-move chess problem" . . . . . "Beispielsammlung" . . . . . . . . . "Adventures in composition : the art of the two-move chess problem" . "Adventures in composition : the art of the two-move chess problem"@en . "Adventures in composition : The art of the two-move chess problem" . . . . "Chess." . .