[bplotkin]

Playing in a Robot Duplicate this morning, I had the following hand occur:

Link to hand diagram

Now, admittedly, my 4H bid sucked. In my defense, that's what I get for playing at 12:45 AM when I've only had an hour of sleep .

But seriously...NO DOUBLE of 4H from the East hand? EARTH TO BOT?

I've seen this sort of thing at other tables several times since the upgrade. The bots penalty doubles were neutered way too much.

Edited to mention the hand was played in 4H at one other table, and 3H at one other table. NEITHER was doubled.

[pescetom]

Maybe simulations suggested that 4H scored better than letting you run to a minor.

[bplotkin]

 pescetom, on 2019-February-15, 08:03, said:

Maybe simulations suggested that 4H scored better than letting you run to a minor.

When I don't have a bid over 2S? How likely is a successful five-level runout???

[steve2005]

 bplotkin, on 2019-February-15, 02:13, said:

The bots penalty doubles were neutered way too much.

Bots were doubling on points without trick taking capability.
Apparently it's too hard to program tricks so increased the points!

[pescetom]

 bplotkin, on 2019-February-15, 08:53, said:

How likely is a successful five-level runout???

Undoubled, no worse than 4h (down 3 double dummy). So not a good deal, but it's a close call and a limited number of simulations might go that way.

[johnu]

 pescetom, on 2019-February-15, 08:03, said:

Maybe simulations suggested that 4H scored better than letting you run to a minor.

GIB doesn't "think" like that. If a contract is doubled for penalty, and it gets redoubled for penalty, GIB won't pull the redouble because it has already determined that the double was correct. The redouble doesn't change the original decision.

[dsLawsd]

It seems to me that on the whole, the bots bidding is worse in many auctions because of the way they count points- especially adding short points when that cannot possibly make the hand stronger in context.
The fixes are good but when they start opening 4 card majors and do not come close to playing 2/1 lite then it becomes a crapshoot.

[mlbridge]

Sometimes playing with BOT is like shooting craps. You never know what you get in bidding or on defense.

I just hope they improved on that stupid law of total tricks. You can open after three passes in fourth seat a weak 2 and the BOT will still raise you with a minimal hand. Or the BOT will never bid NT even though BOT have the stopper. Instead it will continue to cue bid so you end up in the wrong contract. Or instead of opening with a weak 2, the BOT will open in first seat with 10 HCP and a six card suit headed by the K10. Or instead of a negative double, will overcall with a 4 card suit. So one never know if BOT have a 5 card suit or a 4 card suit.

I have no idea how these simulation routines work. But how many times the BOT will not lead the suit you open or overcall with. Sometimes it seems the BOT deliberately will not lead your suit.

[msjennifer]

Sir,ina lighter vein perhaps the robot on your right hand did not double as it thought that his partner robot would take it as balancing double.After all they have no brains or have not they!

[IGoHomeNow]

This morning, I opened 1S. Bot says 2C. I raise. Bot says 4D, splinter.. Lacking any Aces, I raise to 5. Bot passes, down 1
Bot has 3 spades and it is cold barring horrific splits.

Splintering when I may only have 3 clubs in preference to showing 3 spades is nuts.

[johnu]

 mlbridge, on 2019-February-16, 04:04, said:

Sometimes playing with BOT is like shooting craps. You never know what you get in bidding or on defense.

I just hope they improved on that stupid law of total tricks. You can open after three passes in fourth seat a weak 2 and the BOT will still raise you with a minimal hand. Or the BOT will never bid NT even though BOT have the stopper. Instead it will continue to cue bid so you end up in the wrong contract. Or instead of opening with a weak 2, the BOT will open in first seat with 10 HCP and a six card suit headed by the K10. Or instead of a negative double, will overcall with a 4 card suit. So one never know if BOT have a 5 card suit or a 4 card suit.

I have no idea how these simulation routines work. But how many times the BOT will not lead the suit you open or overcall with. Sometimes it seems the BOT deliberately will not lead your suit.

Sounds like you have a good understanding about GIB that you learned after hard lessons playing in GIB games.

[svengolly]

The worst part about bot play is that it's going to lead to some bad bridge on the part of human players to compensate...especially with all the ACBL events. I have written the ACBL Bridge Bulletin twice about horrible bot decisions affecting sanctioned event outcomes. They've refused to publish my letters.

[barmar]

Knowing your opponents and taking advantage of their proclivities is normal bridge play. Who among us hasn't bid touchy contracts against the worst pairs in the club, expecting them to give you an extra trick due to their poor defense?