5 x 5 magic squares
requires JavaScript
A mouseclick on any number of the greenbordered square ("numberpool") moves this number into the first empty
field of the redbordered square ("magic area");
a click on any number of the magic area brings the number back to its original place in the pool.
Aim: 
A magic square of order 5 is to be constructed, depending on choice a panmagic and/or a symmetric or a bordered one. 
When "show" or "quick" is activated, a backtracking algorithm will continue the search for a solution; interruption can be caused
by clicking the option "mouse". When a solution is found, the algorithm will stop, and in that case, a search for a next solution may be continued with the corresponding button. The bluebordered square always contains the last found solution. The delay (in milliseconds) regulates the frequency of image output, if "show" is activated.
