Hi All, I would like to request a code and design review of one of my program. n-puzzle.py http://sarovar.org/snippet/detail.php?type=snippet&id=83 Its a N-puzzle problem solver ( Wikipedia page and http://norvig.com/ltd/test/n-puzzle.lisp ) I have used OO Python for the above program and would like comments on my approach as I am just starting with OOP. Thanks Senthil