Logic puzzle news

New: SumSudoku for iOS

Thursday, November 23, 2017 New: SumSudoku for iPhone and iPad

Support Conceptis

Enjoying SumSudoku on your iPhone or iPad? Don't forget to support Conceptis by rating the game on the App Store!

Conceptis SumSudoku, an addictive Sudoku variation also known as Killer Sudoku, is now available for iPhone and iPad.

Each SumSudoku puzzle consists of a 9x9 Sudoku grid containing areas surrounded by dark borders. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 box, and the sum of the numbers in each area is equal to the clue in the area's top-left corner. In addition, no number may be used in the same area more than once.

Download on the AppStore

90 free puzzles to get you started

Conceptis SumSudoku features over 240 puzzles in a wide range of difficulty levels. The game offers 90 free puzzles to get you started, as well as an extra free puzzle which is released each week. More puzzle volumes will be published regularly. All puzzles have unique solutions. Are you up for the challenge? Download Conceptis SumSudoku and start solving right now!

App video

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