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A total of 300 questions with EASY, NORMAL, and HARD difficulties have been included.\n\nComplete problems to unlock background effects and BGM tracks.\nThere are 3 background effects and 3 BGM tracks.\nSudoku allows you to use your brain while also being soothed by the effects and BGM.\n\nYou are able to save the problem before completing,\nmaking it an easy game to pick up and play on the go.
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