Q-Puzzle
This is a mathematical jigsaw puzzle! You have a photo cut 
into  pieces, where  is a power of a prime . Therefore it represents the 
vector plane over the finite field  with  elements.
These  pieces will be presented to you in disorder, result of a 
(hidden) affine transformation of the plane. And your goal is to recover 
the image by finding the inverse affine transformation. 
You have the right to multiple tries in order to do it. 
Recall that an affine transformation is a linear transformation followed by 
a translation. All are operations over .
You may play this game even without understanding the mathematics behind. 
In this case we suggest you don't go further than 
than  otherwise the game risks to be very frustrating.
We also recommend another online jigsaw
Shifting puzzle which requires much less mathematical background.
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    - Description: puzzle based on affine transformations on a finite field. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
 
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