They played again last night and @xhu98 actually had to stop and think a few times. Lol.
@calantir is a fast learner and xhu98 is an excellent teacher , so TAKING ALL BETS as to whether cal can break through to 1 dan by the end of this visit.
edit Also, thanks! Re: goban, it's bamboo. We got it to go with the bamboo bowls (and yunzi stones) calantir won at the last MD Open (go tourney).