[uva72uva72]

My link

IMPS, ACBL robot individual

My 2NT rebid is limited to 24 HCP (for an absolute max of 34 in North-South combined, ), and I'm likely as not to have only 4♥, yet North leaps to the grand slam without checking on Aces (or, to raise a trivial point, the ♥Q.) North needs to find South with ♠A, ♥AQ, ♦KQ and ♣A (or ♦Kx with a 3-3 break) as well as ♥ J and/or a 3-2 ♥ break. That puts the 7♥ bid in the wishful thinking category, in my opinion. In contrast, at those tables where South rebid 2♥, which is theoretically unlimited and promises at least 5♥ (and usually delivers more), North accurately judges that a small slam is the limit of the hand. The robot seems to have difficulty evaluating its hand when there's a big balanced hand across the table.

[Bbradley62]

If only there were a way for North to find out how many (or maybe even which) Aces and Kings South holds...