'Fiendish . . . as frustrating, divisive and annoying as it is deeply fulfilling' Guardian

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The secrets of the country depend on you.

Find out if you’ve got what it takes to be a code breaker?

GCHQ’s top-secret codebreakers have always protected the country – from Bletchley Park’s war-ending WWII breakthroughs to saving us all from life-destroying foreign cyberattacks.

But what kind of mind does it take to work there? And do you have the brain power, cunning and resourcefulness to pit your wits against them and win? Here, taken from their archives, are decades of codes, puzzles and challenges for everyone to try.

You’ll discover:

- Tips on how to get into the mind-set of a codebreaker
- Puzzles ranging in difficulty from easy to brain-bending
- Challenges that have never been solved
- Insight into the organisation's top secret history dating back to 1919

The security of the country is at stake.

What are you waiting for? Get cracking!

ENJOY THESE TWO TEASERS

What follows Vienna, Brussels, Prague, Copenhagen, Tallinn, Helsinki, Athens, ?

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If 1000110 is MINGLE and 1000110001100 is APE, what string of digits is POLITE?

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'Ideal for the crossword enthusiast' Daily Telegraph

Product specifications

Category Puzzles

Tormino

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Why Tormino?

Tormino B.V.

Dutch company
Pletterij 35 F, 2211 JT Noordwijkerhout

Note: pickup or visiting not possible

Since 2015

Trusted Dutch online store since 2015

980,000+ products

One of the largest assortments in Europe with fast delivery

Fast delivery

Estimated shipping date indicated on each product
View our shipping costs

Secure payment

100% secure checkout via iDEAL, Bancontact, Visa, Mastercard, and PayPal

Customer Support

Questions or need help? Contact us directly via our contact page.
Contact us →

Frequently Asked Questions

Everything about shipping, delivery, returns, and warranty

When will my order be shipped?

The estimated shipping date is stated directly on each product next to the order button. As soon as your parcel leaves our central warehouse in the Netherlands, you will receive a tracking link. Delivery takes on average 1 to 4 business days.

What are the shipping costs?

We charge transparent flat shipping rates per order: € 6.95 for the Netherlands, Belgium, and Luxembourg; € 7.95 for Germany and Denmark; and € 9.95 for France, Spain, Italy, and Finland. View our shipping table for all other destinations.

Can I return my order?

Yes, you always have a 14-day return window from receipt of your order. Items can be returned in original, unused condition and packaging in accordance with our return policy.

What should I do in case of transit damage or a defective item?

Did your order arrive damaged or defective? Please report this within 48 hours of delivery via our contact page with clear photos of the outer box, shipping label, and damaged product. Our support team will resolve it right away with a replacement or refund.

Tormino magazijn interieur met verzendstation in Nederland

Since 2015 • Central warehouse in the Netherlands

About Tormino

Your trusted European e-commerce partner

Founded in 2015, Tormino offers over 980,000 products across Europe. Orders are carefully packaged and shipped directly from our central warehouse in the Netherlands.

Central warehouse & mailing address Tormino B.V.
Pletterij 35 F
2211 JT Noordwijkerhout, The Netherlands Note: pickup or in-person visits not possible

Customer Support & Contact Contact our customer support → Response within 5 business days (Mon-Fri)