I looked around meta, and it seems this came up before. It seems there used to be such a tag, but it was removed for various reasons:
- One reason is that it is 'meta' and describes the 'origin' of the puzzle rather than the content.
- One reason is that low-quality/off-topic questions should be flagged/closed/deleted rather than tagged.
Might it not be possible to describe an origin-independent, quality-independent 'type' like here's a (usually 3x3) picture grid with a corner missing, and here's some more pictures, which one is supposed to fill in the blank? Such a thing isn't necessarily from an iq-test, nor is it necessarily low-quality.
Even if we don't call it iq-test, isn't there something taggable here, even for just specifically 3x3, it seems there are enough of them to justify their own tag, I think?
But I'm not really a meta user, and don't fully understand the previous history on meta of this issue.