[wbartley]

Sometimes I pick up a partner at the partnership desk at a regional and I tell them I'll just play whatever card they like. And sometimes they show me a card with every convention known to man listed. I'm a glutton for punishment so I always say, "Sure!"

After about three rounds it usually becomes apparent that even if they've managed to remember what their card says, they don't actually understand the point of the conventions they're playing.

All this brings me to this gem.

https://tinyurl.brid...se.com/2vuk3bx4

I open 1♠ and the bot bids a forcing NT. Don't get me started on how bad a bidding system 2/1 is.

Since the bots are defending, I overbid 4♠ and the bot wheels out the wood. Dutifully I show three keycards. Now the bot asks me about the queen of trumps and I again dutifully reply that I have it and also the K♦.

If you read the explanation of all the bids, it would be safe to conclude that GIB knows I have seven spades to the AKQ, the A♣ and the K♦.

But only one of us seems to understand that this means we certainly have 13 top tricks and, in all likelihood, 14 top tricks.

Generate random NS hands thusly constrained and feed them into a double dummy analyser. No matter how many hands you generate, 7NT is cold on any lead.

I'm genuinely curious about the programming logic employed that arrives at a bid of 6♠