A new Strimko challenge, courtesy of the Grabarchuk family. The object of this logic puzzle is to fill in the missing numbers, keeping in mind these simple rules:
-each row must contain different numbers
-each column must contain different numbers
-each stream must contain different numbers
Included in this months Strimko (made especially for Smart-Kit!) are 3 challenges: easy, medium, and hard. The Grabarchuks also have Strimko available for the iphone (and the lite version is free :)
For a very hard visual-spatial packing puzzle by the Grabarchuks, check out Untouchable 11
