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GIB rejects valid claim when not on lead

#1 User is online   smerriman 

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Posted 2025-March-24, 21:40


When East led ♥6, I claimed 11 tricks (rejected)
After West played ♠9, I claimed 11 tricks (rejected)
After I followed with the ♥3, I claimed 11 tricks (accepted).

Interesting :)
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Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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#2 User is offline   lorserker 

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Posted 2025-March-25, 00:14

it has a "budget" of how many positions it can analyse when solving a claim. when it runs out of "budget", it will reject.
this tends to happen when it's early on in the hand and/or the opponents van still take a few more tricks. in both cases the search tree is bigger.
we'll try to make the claim algorithm more efficient. especially the part where you claim when not on lead, that was introduced recently, could be optimized a bit more.
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#3 User is online   smerriman 

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Posted 2025-March-25, 01:24

Thanks. It has always been rather miraculous how the original algorithm could work so perfectly.
A better handviewer
Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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