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The best British chess player of the day, Hugh Alexander, went on to become head of cryptoanalysis at GCHQ, while doubling as the Spectator's chess columnist under the pseudonym Philidor.

“The NSA spends $250m a year on a program which, among other goals, works with technology companies to ‘covertly influence’ their product designs,” the documents revealed, showing too that efforts in government cryptoanalysis had made some significant gains in cracking codes used to encrypt emails.

Nonetheless, reconstructing the score involved some musical cryptoanalysis by Schuller and his associate, Andrew Homzy.