Great app!
I love this app. Easy to use. I have had it for a while and played all levels but I am a sudoku junkie. I dont want the rows to light up like some games. I find that annoying and reduces the challenge. There are other games for that. If you want a game that lights up and tells you everything then this is not the app for you. A hint might be nice at times but again, that reduces the challenge. Sometimes it just comes down to an educated guess and you can always go back to where you started if you make a wrong guess.
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Sudoku Deluxe