Everyone knows sudoku is enjoyable--but these addictive puzzles come in endless variations too! They range from simple to very difficult, and can take almost no

Its time to break out of the box: the traditional 3x3 puzzle box, that is! This assortment of engaging and challenging variants takes sudoku up a notch. The cre

Every day, tens of millions of sudoku fans get out their pencils and attack the latest 9x9 puzzle in their daily newspaper. But a huge percentage of those fans

Love traditional sudoku but wanting more of a challenge? This collection features a great mix of 100 puzzles, all guaranteed to provide hours of entertainment a

Far sizedoku -- Distance three sudoku -- Meandoku -- Divisidoku -- Star sumdoku -- Parity adjoku -- Even mindoku -- Near sizedoku -- Zoodoku.