Q 01/05

What was the codename for intelligence produced at Bletchley Park?

A) Venona

B) Magic

C) Ultra

D) Purple

Answer · why

C) Ultra

The centre was the wartime home of the Government Code and Cypher School, and Turing reported there the day after war was declared.

Q 02/05

Which section of Bletchley Park, responsible for German naval cryptanalysis, did Turing lead?

A) Hut 6

B) Hut 8

C) Hut 3

D) Hut 11

Answer · why

B) Hut 8

He picked the naval problem, he said, "because no one else was doing anything about it and I could have it to myself".

Q 03/05

What electromechanical codebreaking machine did Turing specify soon after reaching Bletchley?

A) The Robinson

B) Tunny

C) Colossus

D) The bombe

Answer · why

D) The bombe

Its name came from the Polish bomba kryptologiczna it improved on; the first one was installed on 18 March 1940.

Q 04/05

Which mathematician's enhancement made the bombe a primary Bletchley tool against Enigma?

A) Dilly Knox

B) Gordon Welchman

C) Hugh Alexander

D) Max Newman

Answer · why

B) Gordon Welchman

The diagonal board he added let the machine rule out far more rotor settings per run.

Q 05/05

On what date did Turing report to Bletchley Park, the day after Britain declared war on Germany?

A) 3 September 1939

B) 4 September 1939

C) 1 September 1939

D) 10 May 1940

Answer · why

B) 4 September 1939

Like everyone there he signed the Official Secrets Act, which kept his war work secret for decades.