Around 1000 problems every time. The point is not only to collect the best problems, but also to award titles. Official titles for composers, e.g. International Master for Chess Composition, are awarded on the basis of problems selected for the FIDE albums.
Every selection is worth a given number of points and every title requires a given total.
Of course, there are precise rules for submissions, selections, points given to multiple authors, etc. The important thing is that they include a few retros . Back to the Retro Corner .