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Another where he doesn't know to bid the grand

#1 User is offline   jdonn 

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Posted 2010-May-16, 08:09

Scoring: MP


2NT 4♦
4♥ 4NT
5♣ 5♦
6♣ 6♥
Please let me know about any questions or interest or bug reports about GIB.
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#2 User is offline   barmar 

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Posted 2010-May-18, 01:13

LOL. It seems like the only times GIB bids grands is when it blasts to them. But when it can simply count 13 top tricks, it can't see it.

#3 User is offline   helene_t 

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Posted 2010-May-18, 05:09

Strange. Even if South has no other cards than the ones he's promised there are 13 top tricks on any split.
The world would be such a happy place, if only everyone played Acol :) --- TramTicket
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#4 User is offline   Cascade 

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Posted 2010-May-18, 05:22

helene_t, on May 18 2010, 11:09 PM, said:

Strange. Even if South has no other cards than the ones he's promised there are 13 top tricks on any split.

not true.

The ♥J has not been promised and with ♥AQ tight then a 4=0 split in hearts would make 13 tricks impossible.
Wayne Burrows

I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon

#5 User is offline   jdonn 

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Posted 2010-May-18, 20:31

Cascade, on May 18 2010, 06:22 AM, said:

helene_t, on May 18 2010, 11:09 PM, said:

Strange. Even if South has no other cards than the ones he's promised there are 13 top tricks on any split.

not true.

The ♥J has not been promised and with ♥AQ tight then a 4=0 split in hearts would make 13 tricks impossible.

That sure must have happened a lot of times in gibs simulations, how unlucky for me.
Please let me know about any questions or interest or bug reports about GIB.
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#6 User is offline   jdonn 

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Posted 2010-May-18, 20:41

In fairness to gib's faults, I know that it doesn't bid grands after keycards and should have just assumed it had an ace and bid the grand myself here. But, if only I didn't have to assume such things in grand slam bidding...
Please let me know about any questions or interest or bug reports about GIB.
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#7 User is offline   arigreen 

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Posted 2010-May-19, 00:15

GIB knows that it should be simulating in these types of auctions, but it has difficulty generating hands that are consistent with the auction. It seems like it shouldn't be so difficult to do the deal generation since 17 of partner's 20-21 high card points are known. I'll have to investigate further.
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