If you have one group that's based on a specific area of knowledge (e.g. football, dogs), it's less fair to have another based on the same area. It means that someone who doesn't know about that field can never sort out the last two groups. I found half of this easy, the other half pointlessly impossible.

5/10. I see the argument for diversity. But as I think this is a first time effort...or at least a new creator, it's a solid outing.

Couldn't sort it out as I'm not well up on footballers and the link for the dogs/places group is dodgy as "dalmatian" is an adjective rather than a place.
I seem to be finding lots to quibble about among the latest grids.

Goo, well thought out grid, my only gripe is that two groups had the same answer, which must be a first for PuzzGrid.

good one denny