Sizedoku

Sizedoku puzzles are similar to normal sudoku puzzles.  Between any two adjacent cells in each three-by-three cage we place an arrow from the cell containing the larger entry to the cell containing the smaller entry.  It is easy to construct such puzzles without giving away the value of any individual cells.  As an introduction to this style of puzzle, we give away two cells to give you a simple starting point.

Link to high quality PDF.