Bridge: Bug responding to minor opening with interference

[antross]

In this customer-reported situation where partner opened 1D and RHO overcalled 1S:

[Deal "S:- - A7543.6.AJ752.T2 -"]
[Auction "S"]
1D 1S

Normally the bot would have wanted to bid 1S, but that's no longer available. It also can't use a negative double since that would show Hearts, and while bidding 3D shows the correct strength and length it denies a 4-card major (which the bot does actually have).

In this case it seems the best "lie" would be to bid 3D to remain competitive, especially since Spades would be a poor choice given opponent's overcall.

The current SAYC bot passes.

[antross]

Ralph suggests 3NT (looking at tricks instead of points; 1NT just looking at points)