The

The From the home of the co-breakers and the birthplace of modern computing, this is the Bletchley Park podcast.

This is M.C. Fontaine welcoming you to another Bletchley Park podcast Extra.

This week we have the concluding part of this year's annual Turing lecture,

which was given by Bletchley Park veteran, Captain Jerry Roberts.

So the job was passed to B Tart, a 24-year-old graduate from Cambridge, who had been

offered to Bletchley, interviewed by Turing and rejected by Turing.

But he was taken on by somebody else, I think by Tiltman.

Gojavee did too.

Bill Tutt managed, and it took him two and a half months, managed to break Tony.

As it happens, I was working in the same office as Tutt,

and I still have a clear mental picture of him, staring into the middle distance for quite long periods, twiddling his pencil and covering reams of paper with counts.

And I used to wonder whether he was getting anything done.

My goodness he was.

Charles quoted quite rightly what a commentator this century has said about Bill Tud's achievement.

The outstanding mental feat of last century, not the war, last century. And I have to second

that. You've got some idea of the complexity of what he did. And again, we should be grateful for it.

You can find out how he did it in this book, Colossus, edited and partly written by Professor Chad Copeland.

Hilt-Rat has an appendix in there which describes how he broke the system.

I have tried to read it three times and got halfway.

I hope you have better luck.

I can usually understand what I read,

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