SudoKoach makes solving Sudoku puzzles more enjoyment. It does the tedious work of figuring which numbers are possible in every unsolved cell and provides tools to aid you find the solution, including 3 levels of hints. Generate puzzles with 6 levels of difficulty, or you can enter puzzles from newspapers. The practice mode helps you learn solving strategies. You can print puzzles for solving later or to give to friends. Give it a try--it's enjoyment!