Introduces a fresh variant of sudoku that features irregular regions of nine neighboring cells; they're called jigsaw elements because they all fit together to

Sudoku is the new number puzzle craze sweeping the nation, and Sudoku X is the only puzzle collection to add diagonal play to the Sudoku formula.

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

From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Batt

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