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
2434 pledges
Paperback
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

£19.98
+ 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