Sudoku X is an interesting change to the traditional Sudoku puzzle. Not only does each number occur exactly once in each row, each column, each region, the main diagonals must also contain each number... This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.