What should I call this kind of puzzle?
Note that there are
two of each number.
read them off as flag semaphore by which box they're in (for instance, there's a 1 in the top box and a 1 in the lower left box), you get the message
Then, if you
read them off with flag semaphore again, but this time by sub-box only, you get the answer: PSEUDOKUS.