Cain's Jawbone

By Edward Powys Mathers

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

Rewards for this book are not available.

Sold out!

$25  + shipping
1047 pledges

Two Paperbacks

Two copies of the infamously difficult puzzle in a pocket-sized paperback.

PLUS:

  • 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

Frequently Asked Questions

When will my book be dispatched?

Your copy will be dispatched within 2-3 working days.

I wanted to order a copy of the box

You can pre-order the box here

Where can I get my book delivered to?

We deliver to most countries worldwide. Enter your delivery address during checkout and we'll display the shipping cost when we know where to send your book.

Will I be charged customs fees to receive my book?

All books are sent DDU and may be subject to customs fees in your country of residence. These are not collected by Unbound and will be processed during transit.

Still have a question? Visit our Help Centre to find out more.