Square Off
Square OffSquare Off combines a configuration theme with a territorial object. It's easy to learn and no big deal strategically. It's one of those games that 'just so happened' - this one even on a clubnight of the games club 'Fanaat', if I remember correctly. It was added later to this compilation, because I had forgotten about it.
It's also one of those games one does not actually 'invent': once the idea is there, it's there and there's not much choice one way or the other to alter anything. We didn't use a swap, back then, but that's about it.