價格：免費
檔案大小：53 MB
版本需求：需要 iOS 7.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Just like normal sudoku, but instead of filling in the numbers you swap them with each other.
Solve endless levels with a balanced difficulty from difficult to easy.
支援平台：iPhone, iPad