[calm01]

http://tinyurl.com/3kpc2r6

On this deal the first club lead was won in dummy, declarer playing low. Then the lowest diamond (2) was led on the second trick.

GIB chose to play the the apparently no-win Jack of diamonds as East.

There must be a fundamental programming failure there as no sensible simulation of hands can make this play reasonable as partner is unlikely to have both exactly Kx of diamonds (declarer has at least 3 on the bidding) and also the King of Spades as this would leave opener with just 8 points.

Whatever happened to second hand low unless there is a very good reason such as an inspired play of the Ace of diamonds as if partner has the Spade King this play and a Spade switch defeats 3NT by one trick - also at little cost if partner does not have the King of Spades?

Calm01

[barmar]

I haven't been able to reproduce this, I tried a few different random seeds, and it either popped up with the Ace (not a great play, either) or played the 7 to give count.

Was this a basic or advanced robot?