by richardm » Tue Jan 02, 2007 12:53 pm
There have been several papers on Latin Squares, the generalization of sudoku, published in the British Mathematical Association's organ The Mathematical Gazette. An alternative would be the American Mathematical Society's journal, American Mathematical Monthly. However the BMA tends to cover a lot of papers on group theory, which is pertinent to sudoku. The articles on Latin Squares in the BMA discuss critical sets - the minimum number of knowns to define a unique solution and also whether there is a stepwise deductive soultion to the critical set.
Richard