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Recreational mathematics or puzzles with serious mathematical content. Note that math contest problems are generally considered off-topic.

23 votes
1 answer
1k views

Covering of a surface of a cube $n\times n \times n$ by pieces of paper $1\times 6$

When I was too young one of my problems was in the list of problems of All-Russian Olympiad. The problem is the following: Problem. We have a surface of a cube $n\times n \times n$ such that each fac …