软件介绍：

Big Bad Sudoku Book：It's been called the "Best Sudoku Game on ANY platform". Sudoku Book is an essential game for every iPhone or iPad.

Was in the #1 spot as most download iPad app in 8 countries, and in the top 10 games in 56 countries.
Has been featured in What's Hot, New and Noteworthy, Game Center Games, and is an iTunes Game Starter Kit app.

"If Apple made a sudoku game I think it would look like this" - Dytavio

"The whole look is perfect... This is the best sudoku interface of the five sudoku apps I have downloaded. I suspect the rest will be removed from my iPad" - GrayerBeard

Sudoku Book is a magical sudoku puzzle book that comes alive beneath your fingertips. Buy one app and install it on all of your iOS devices.

Now supports background audio - play internet radio apps, soma fm via safari, or ipod music while playing the game.

Game Center support with Leaderboards and Achievements.

Puzzle scoring adds an arcade game feel to sudoku and provides a metric for challenges. Now there are two parts to the puzzle, how to solve it and how to get a higher score.

New difficulty levels definitions provide games that are consistently Easy, Medium, Hard, Expert, or Insane. All puzzles are guaranteed to be solvable without guessing, although harder puzzles require some advanced solving techniques.

Campaign Mode has 50 preset puzzles that span all 5 difficulty ratings. Play one to unlock the next one. See how high of a score you can get by completing all 50.

Highlights are a revolutionary and exclusive way to see and solve sudoku puzzles. With highlights you can softly highlight cells, rows, or columns with the gesture of a finger. They help focus your attention and narrow down possibilities. You can use highlights to temporarily mark positives or negatives.

- Swipe into a row to highlight the whole row, or swipe into a column to highlight the whole column.
- Press and hold on a number to highlight all occurrences of that number.
- Press and hold again to highlight all rows, columns and blocks for all of those occurrences.
- 'Draw' on the board to highlight cells.
- Tap off the board to clear all highlights.
- Rub on a previous answer to wipe it out and remove it (iPad Only)

Get Hint offers clues to help solve your puzzle without actually giving away the answer. It might direct you to a cell and tell you your answer is incorrect. Or it might highlight an empty cell and tell you that a 'Single' or a 'Hidden Single' can be found there.