I don't often host christmas, but I thought having a puzzle out might be nice. I'll have seven adults in the house on christmas day, at least two of whom are known to actively enjoy puzzling. But to make it sociable I think we'd want to see good progress. Is 500 bits the right size for the occasion?
I haven't done a puzzle for a while - I think I'd consider 1,000 bits to be the standard "worth doing" puzzle that wouldn't be finished too soon.
Any experience?