Hi Roy and welcome. It's great to have you here, but not so great you have to be here.

I will just agree with the things already posted and add a tidbit. Keppra, or as a lot of people have renamed it, "Kepprage" is pretty famous for causing mood swings. Keep in mind, a lot of side effects should go away as you adjust to the medication(s). From my understanding, Keppra is more gentle on your body (as some aren't very good for your liver, kidneys, and what have you).

I'd make sure that you mention that before or during both seizures, you were playing chess. Perhaps you can get a laptop and try it again during an EEG just to rule it out as a culprit.

Hope you find some answers soon, and make sure you keep us updated.