I don't know if you have ever played this in school, but now it is online by Zibumi for everyone. 
You try to complete the squares on a 10 by 10 board, by choosing your next square for the next number. Goal is to achieve 100. Time is also a constraint for high scores.
Have fun...
CENTUM

You try to complete the squares on a 10 by 10 board, by choosing your next square for the next number. Goal is to achieve 100. Time is also a constraint for high scores.

Have fun...
CENTUM

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