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#

Solving the General NxN Puzzle

Some domains can be scaled up or down by adjusting a certain
parameter,
such that the same operators are applicable in the scaled domain
(perhaps by using the parameter in their definition).
For example, we can define a family of domains called the NxN puzzle,
where each *N* defines a different puzzle domain. When *N*=3 we get
the
8-puzzle domain, when *N*=4 we get the 15-puzzle domain,
etc.
All the domains in this family use the same operators: *Up*, *Down*,
*Left* and *Right*.

*Shaul Markovitch*

*1998-07-21*