blackshoe, on 2015-June-04, 09:43, said:
Ok, here's my attempt at this question. Suppose we accept that South's double was indeed psychic. I don't think the UI that South didn't ask suggests much at all, since presumably he assumed the alert meant it was artificial. But was the psyche fielded? I don't think North's pass is particularly unusual, and IMO the psyche was fielded if he didn't lead a diamond, and not fielded if he did.