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Cain's Jawbone

By Edward Powys Mathers

A paperback edition of the world's most difficult literary puzzle

You made Cain's Jawbone a reality. It's available in all good book stores now.
$30  + shipping
236 pledges

Two Paperbacks

Buy two of the infamously difficult puzzles in a pocket-sized paperback. Exclusively available from Unbound (in UK bookshops from July 2021).

PLUS:

  • 2 x Free Cain's Jawbone pencil
  • Room for notes at the bottom of each page
  • Printed 'cut here' lines for those who want to remove pages
  • Attempted solutions will still be marked
  • All correct answers will receive £250 Unbound credit voucher
Buy now

Frequently Asked Questions

How long will it take for my book to get dispatched?

For books in stock we usually dispatch orders within a few working days. You will receive a dispatch email when your order is on the way.

Where can I get my book delivered to?

We have temporarily stopped taking orders for published books going to EU destinations due to BREXIT restrictions, but we deliver to most other countries worldwide. Enter your delivery address during checkout and we'll display the shipping cost when we know where to send your book. If your country does not appear on the list we are not currently taking orders to that destination.

If I buy an ebook, when will I receive this?

Ebook files are sent via email after checkout, or you can download them from your Unbound account.

Where can I buy a copy if there's none available through the Unbound website?

The book should be available to order from most bookshops, or you can support your local bookshop online by ordering from bookshop.org.

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