-advertisement-
10%

How about this one? Which number should you write in the marked square?

Fact Lab

Check out this great content

Continue to play afterwards
-advertisement-

Interesting fact:

Appearances can be deceiving: Although Sudokus usually involve numbers, they are not mathematical in nature. There’s no arithmetic required, only a good sense of combining. That’s why Sudokus also work with any kind of symbols, colours, or letters.