[steve2005]

i wasnt really paying attention so led 5th best
if i had led 4th best would gib have woken up and realized we have hearts?
My link

[johnu]

Good defense by GIB to hold the contract to 8 tricks. Lessor opponents would have given up overtricks.

[smerriman]

steve2005, on 2023-April-15, 17:43, said:

i wasnt really paying attention so led 5th best
if i had led 4th best would gib have woken up and realized we have hearts?

No, it doesn't care what heart you used at all. East showed 19-21 HCP. They clearly hold the ♥J, because 10 HCP is exponentially closer to 19-21 than 9 HCP . So you can get at most 1 trick; a diamond ensures this trick, locking declarer in dummy (required if declarer holds the ♥T too).

[steve2005]

smerriman, on 2023-April-15, 20:00, said:

No, it doesn't care what heart you used at all. East showed 19-21 HCP. They clearly hold the ♥J,

What about my bidding, I am showing enough pts that I could have JH.
Plus i've showed up with AK clubs so clearly East doesn't have 19-21
Is there no "does not compute" function?
In fact as soon as dummy is revealed North knows east doesn't have their bid

[smerriman]

steve2005, on 2023-April-15, 20:25, said:

What about my bidding, I am showing enough pts that I could have JH.

You passed, showing potentially nothing, and then doubled, which is 100% undefined.

I don't know what the exact algorithm is, but assuming the opponents play GIBberish is always one given, so when everything is completely haywire you're not going to have much luck expecting GIB to figure anything out.

[steve2005]

looks like the only way to beat contract then is to switch to T♦
hopefully North will overtake Q♦ with Ace this time and continue suit