[mturmon]

That's what I have been doing. It "feels" like a good strategy.

But I couldn't tell if it was really just for my own cognitive convenience. That is, it's easier for me to reason about moves if I constrain moves to keep my high tiles against an edge.

I watched the AI play once, and it of course does not constrain itself this way. To really rub it in, the AI won the game, which I have not.