Cryptography

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Across
  1. 2. The team lead by Turing in Bletchley Park
  2. 4. The 'C' in GHCQ
  3. 5. The 'R' in W.R.N.S, women officially helping out in Bletchley Park
  4. 6. The surname of a fellow code-breaker that helped create the Bombe machine together with Alan Turing
  5. 7. A famous lady working in the code-breaking unit at Bletchley Park, close friends with Alan Turing
Down
  1. 1. A test proposed by Alan Turing in a paper in 1951 to finally settle the issue of machine intelligence
  2. 3. The first Bombe machine created in Bletchley Park, 1940