Maybe I'm just having an off day.
Grid 10 is complete, as are all grids with the exception of grids 4 & 5.
but g4 can go either way on the 4/8 x-wing - which means this puzzle does not have a unique answer.
I'm fed up, but I don't feel like restarting this one again..... but maybe I should. Has anyone else had a problem on g4?