How much do you calculate?

[worldfamous]

It is can be very challenging to calculate your opponents wits but the best way to figure out if they have the minimum is to see if there's a move that you're sure they would've made if they had the wits to do so. Anything beyond minimum is usually not worth calculating. As for skipping replays, I skip early on if the fog situation doesn't change. If it does, I'll hit the replay button and watch again. I'll also skip toward the end and check if I have a finishing move available, then go back and watch if not.