I posted a puzzle about coins and change and promised a prize (a copy of The Geek Atlas) to one of the solutions picked by me. The following people provided solutions: 1. Matt 2. Michael Bauer 3. Asger Drewsen 4. vext01 5. Dubya 6. Josh 7. Anatoli Plotnikov 8. Matt Hickford As that's a convenient 8 people I've chosen a winner by the roll of a d8 . So the winner is #7, Anatoli Plotnikov .