[ColinWright]

> You say you don’t reveal the prize, but one can remove six cups at random without revealing their contents.

One can, but one cannot guarantee it.

Actually, one can. One can choose 6 at random from the ones that are neither selected, nor hide the prize.

My point is that my phrasing is, I believe, sufficient to allow the listener to determine that I will turn six cups without revealing the prize. In particular I say that I will remove 6 of the other cups and ... will not reveal the prize.

I honestly don't see how that can be interpreted in any way other than to say that I will deliberately not turn a cup that reveals the prize.