[Should he slick his hair back to complete the resemblance...

No it's fine, Minato is definitely very focused, at least. He's not completely unfamiliar with chess, either, even if he hasn't really played it much himself. He's learned some via osmosis, so he's able to pick up what Dextera is saying pretty easily, nodding to himself contemplatively.]

So they all move like this... And the goal is... to capture the king, right? I think I've heard that before, somewhere.