Cain's Jawbone
By Edward Powys Mathers
A paperback edition of the world's most difficult literary puzzle
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FEATURED REWARD
£9.99
+ shipping
447 pledges
Paperback
Order the infamously difficult puzzle in a pocket-sized paperback. Exclusively available from Unbound (in UK bookshops from July 2021).
PLUS:
- 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
£19.98
+ shipping
226 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