<DIV>Introducing a challenging new variant of sudoku, sure to keep puzzle fans on their toes! And it's here, in this big collection, for the very first time. Instead of having the usual 3x3 boxes, this exciting style features irregular regions of nine neighboring cells; they're called jigsaw elements because they all fit together to create one 9x9 grid.  You solve it just like regular sudoku, except for one thing: instead of each row, column, and box containing 1 to 9, now each row, column, shaped area,<I> and</I> diagonal has the numbers. That means there's an additional element to take into account. All the puzzles here are hand-done, with no computer aid, and they're absolutely addictive!    </DIV><P> </P>