The most difficult Holo­caust riddles

In 1943, 95% of Jews from Nazi-occupied Denmark were evacuated to Sweden in an event known as the rescue of the Danish Jews. It was a collective achievement of the Danish resistance movement, German diplomat Georg Ferdinand Duckwitz (who warned the Danish Jews about the intended deportation to Germany) and many ordinary Danish citizens, mostly policemen and fishermen.

The Memorial to the Murdered Jews of Europe is a well known memorial in Berlin to the Jewish victims of the Holocaust. It consists of 2,711 concrete blocks. Opened in 2005, this large memorial site (19,000 m², 4.7 acres) is today one of the must-see places in Berlin. It is estimated that some 3.5 million visitors entered the memorial in the first year it was open, or about 10,000 every day.

Heinrich Himmler was one of the most powerful men in Nazi Germany and the main architect of the Holocaust. Late in World War II, Hitler dismissed him from all his posts and ordered his arrest for his attempt to open peace talks with the Allies. He tried to go into hiding, but was detained and arrested by British forces. While in custody, he committed suicide by taking a cyanide pill.