Killer Sudoku

If you’re into Sudoku, I can recommend a great variant of the game. In “Killer Sudoku“, all theusual rules apply but there are also other arbitrary regions blockedoff that need to add up to various numbers that are given. It adds anew dimension to the game — not only something else to work out, but anew set of clues. Turns out they’re online and you can print them outor play online.

Another variant on the same site is the “Greater Than“Sudoku, in which the relationship between every square is also given.I’ll try that one next!

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