软件介绍：

Sudoku ?：Take a journey to feudal Japan with Sudoku ?. With beautiful graphics and killer features, this is the best Sudoku app available for iOS.

DUAL KEYPAD ENTRY

Two separate keypads, one for entries and one for notes, allow you to enter values quickly and easily. No more tedious switching between entry mode and note mode to complete your puzzle.

SMART NOTES

The optional auto-notes feature enters all of the notes into the puzzle for you and keeps them updated as you solve. If you don't want that much help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid.

ERROR CHECKING

The optional error checker tells you when you have entered an incorrect or illogical value, allowing you to catch errors early and preventing needless frustration.

ACHIEVEMENTS AND LEADERBOARDS

OpenFeint leaderboards and achievements allow you to compete against other users worldwide for most puzzles solved, fastest time to solve, and highest overall rating. Our unique rating system awards you points for each puzzle solved based on difficulty, time to solve, and amount of help used.

MULTIPLE DIFFICULTY LEVELS

Five difficulty levels, from easy to insane, ensure that you will be able to find a puzzle that matches your skill level. With 3,000 total puzzles, you won't run out of puzzles any time soon.

Download Sudoku ? for free today and start playing Sudoku the way it was meant to be played!