Nnnnot logical at all, from what I can tell.

The solution is probably unique, but you cannot start at all for sure. I just drew a picture and forgot about Hanjie. Found the solution like in the 6th time. Seems to be quite common way to do puzzles here. They should rename the site into "guess a picture"... the only thing you can do: rate low.

Anyway - here's a hint - 1st row and 1st column: always a gap of two between the numbers.

Sorry - didn't look properly - hint is only valid for first row - NOT first column.
But all four corners are black.

Like any other one though, it isn't hard to guess the pattern.

Couldn't have got it without the hint thanks JoergWausW.

Thanks for all your hints, everyone - although once you work out the pattern the last bits are not too hard!!

Poor.

Easy to guess.

Multiple possible solutions. Thank you for the hint JoergWausW.