Mathematische Schülerbücherei some questions

[pier4r]

Yes the math olimpiad are really nice but also not that recreational (one needs to sweat a bit, unless one is good/not rusty).

See also: https://artofproblemsolving.com/community/c13_contests

Only I was thinking about a series (be it books or magazines).

The closer I can recall is:
- eureka https://www.archim.org.uk/eureka/archive/ (they didn't have the archive in early 2019!)
- https://en.wikipedia.org/wiki/Journal_of...athematics no idea how to get this. It is a pity that so much work is done (digital or analog) and then lost.
- http://rmm.ludus-opuscula.org/Home/WebPa...About%20us
- others? No idea

Those are neat, but having a sort of "relaxed" collection as mentioned in the wiki of Mathematische Schulbücherei would be interesting. I am pretty sure something should exists.

edit: of course there is brilliant.org (and maybe similar sites that I do not know). The problem with brilliat.org is that they have a lot of problems but the new ones bury the old ones and it is difficult to dig archives there. They do not even publish books with collections of problems (something they could well do). In other works they have and hoard nice problems, but they give back only a little. Likely they do not see the treasure they have.