On Thu, 18 Aug 2005 18:17:02 +0200, Torkel Franzen wrote: > firstname.lastname@example.org () writes: > >> According to my understanding of the rules of Sudoku, you are not >> supposed to use backtracking at all when solving them. > > I very much doubt that the rules specify which kinds of search > algorithms are allowed.
Agreed. They do say that the solution must be unique, however. I occasionally come to one where I need to guess a number, ripple it through, and come back to that point if I rippled it the wrong way. -- Jim Gillogly