# A Dozen Hat Problems

• Published in 2009
In the collections
Hat problems are all the rage these days, proliferating on various web sites and generating a great deal of conversation—and research—among mathematicians and students. But they have been around for quite a while in different forms.

## Comment

Also known as prisoner puzzles

### BibTeX entry

@article{item59,
title = {A Dozen Hat Problems},
author = {Ezra Brown and James Tanton},
url = {https://www.math.vt.edu/people/brown/doc/dozen{\_}hats.pdf},
urldate = {2016-04-12},
abstract = {Hat problems are all the rage these days, proliferating on various web sites and generating a great deal of conversation—and research—among mathematicians
and students. But they have been around for quite a while in different forms.},
comment = {Also known as prisoner puzzles},
year = 2009,
collections = {Games to play with friends,Protocols and strategies,Puzzles}
}