Conundrum challenge

Do you enjoy solving tricky puzzles? Here's a chance to crack a mind-bending challenge, with two prizes for correct solutions.

A while ago I wrote a book called Conundrum, which provides a series of puzzles, ciphers and code-breaking challenges to the reader, culminating in the opportunity to get a place on the Conundrum roll of honour for completing it. While many have taken on the challenge, and enjoyed it despite not getting all the way, sixteen plucky individuals worldwide have now completed the whole book and made it to the roll of honour.

To keep things interesting, I occasionally add a bonus puzzle with a prize attached. Here's the latest.

Take the number of the motorway heading east from the English seaside town that could be Dublin. Add Blake's space travelling number plus 284's amicable friend. Take the next smallest prime number. Which authority might come to mind?

Two correct entries will get signed copies of my book 10 Short Lessons in Time Travel. When the competition closes on 30 June, two winners will be drawn at random. Just pop over to the bonus puzzle webpage and send off your solution (if you are struggling, there are also a couple of hints there).

If you don't come across this until after it closes, you can still have a go - the bonus puzzle webpage give you a chance to check your solution.

If you fancy more such challenges and haven't had a look at Conundrum, please take a moment to find out more about it here.

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