# Spot it(R) Solitaire

• Published in 2013
In the collections
The game of Spot it(R) is based on an order 7 finite projective plane. This article presents a solitaire challenge: extract an order 7 affine plane and arrange those 49 cards into a square such that the symmetries of the affine and projective planes are obvious. The objective is not to simply create such a deck already in this solved position. Rather, it is to solve the inverse problem of arranging the cards of such a deck which has already been created shuffled.

## Other information

keywords
dobble

### BibTeX entry

@article{SpotitSolitaire,
title = {Spot it(R) Solitaire},
abstract = {The game of Spot it(R) is based on an order 7 finite projective plane. This
article presents a solitaire challenge: extract an order 7 affine plane and
arrange those 49 cards into a square such that the symmetries of the affine and
projective planes are obvious. The objective is not to simply create such a
deck already in this solved position. Rather, it is to solve the inverse
problem of arranging the cards of such a deck which has already been created
shuffled.},
url = {http://arxiv.org/abs/1301.7058v1 http://arxiv.org/pdf/1301.7058v1},
author = {Donna A. Dietz},
comment = {},
urldate = {2017-12-18},
archivePrefix = {arXiv},
eprint = {1301.7058},
primaryClass = {math.HO},
year = 2013,
keywords = {dobble},
collections = {Games to play with friends,Puzzles}
}