Identifying the best turn in any one play should be fairly trivial I think, but the strategy with keeping some letters in hand for a big play later on while sti

Identifying the best turn in any one play should be fairly trivial I think, but the strategy with keeping some letters in hand for a big play later on while still optimising for score is probably fairly complicated within the time limits. Or alternately the AI could just be fairly mediocre, I don't have enough expertise to judge.