Are there peer-reviewed journals that focus on "fun mathematics"?
By this I mean fun things that do involve nontrivial mathematics and which I think other mathematicians would enjoy reading in their leisure time but that are not interesting from the point of view of contemporary mathematical research.
For instance say that I have found a winning strategy for a folklore game that it is not as complicated as chess or Go but also not so trivial that you would figure it out in one afternoon. Or maybe say that I found some nice mathematical "magic trick" that was not known before. Where could I submit these things?
Of course there are journals that just accept more or less anything but this is not what I am looking for.