[benellis58]

Typically "brilliant" performance by the GIB robots sitting East-West:

https://tinyurl.brid...se.com/3skhhax3

[benellis58]

We again have the pleasure of watching the GIB robots sitting East-West as they "defend":

https://tinyurl.brid...se.com/2p8bntmc

[benellis58]

This hand was played 21 times. In all cases, South was a human and West, North, and East were GIB robots.

The top NS score was 100% at the one table where NS doubled EW in 4S and beat it 4 for +1100.
The most common NS score was 57.50%...at 16 tables...where NS also beat 4S four tricks, but did not double, and therefore "only" scored +400.
At two other tables, NS scored 12.50% for beating 4S "only" three tricks not doubled.
At another table, NS scored 5% for beating 4S only ONE trick not doubled.
Thus, EW reached 4S at 20 of the 21 tables.
At the 21st table, SOUTH...opened 2S and played it there, scoring zero percent, as he went down 2 for minus 100, the ONLY negative NS score out of the entire 21 times the board was played.

But the STORY is the EW auction at 21 of the 22 tables - the GIB robot auction with some questionable bids and bizarre GIB definitions:

West's 4C bid seems peculiar, but the definition is typically worthless: "5+ spades; 21- HCP; 16-22 total points". That's it, that's all! Totally useless!
Next, East bids 4H on his 642 tripleton! WHY, pray tell?

https://www.bridgeba...C2%7Cpc%7CD9%7C

[benellis58]

West, North, and East are all GIB robots. East decides that the best opening lead he can POSSIBLY make is his stiff king of trumps (hearts). The GIB robots often make this lead. Is it a shock that it often works out poorly?

https://www.bridgeba...D6%7Cpc%7CSA%7C

[benellis58]

West, North, and East are all GIB robots. I took a shot at 3NT largely because I figured it was VERY likely that West would lead a heart, as in MANY similar previous auctions I have OFTEN seen the incompetent GIB robots lead the suit that the weak two bidder in dummy has opened. The GIB robots seem to think that this is a WISE leading strategy. That says a LOT about the GIB robots!

https://tinyurl.brid...se.com/mschjuzw

[benellis58]

West, North, and East are all GIB robots. The EW GIB robots demonstrate their "ability":

https://tinyurl.brid...se.com/2p83va57

[benellis58]

There are two links below, one in this post, the other in the next post directly underneath this one. They are to the same hand, but played at two different tables. West, North, and East are all GIB robots. The two links will illustrate how a typically stupid lead by the GIB robot sitting West allowed two DIFFERENT contracts to make. Both contracts had no legitimate play.

The first link is to my table, where I was able to make my contract of 5D. West had what I think was an OBVIOUS lead of the heart king, but he stupidly and typically chose to lead his stiff trump (the diamond 6), allowing me to score 11 tricks when I guessed the line that happened to work.

The second link is to the same hand, but at another table. At that table, the human South was declaring 3NT. He successfully made his contract, scoring his 9 top tricks (7 diamonds and 2 clubs) after the GIB robot there ALSO made a typically STUPID lead. Amusingly, it was ALSO his stiff 6 of diamonds, so BOTH West robots chose to lead the same RIDICULOUS card (the diamond 6) against BOTH (very different) contracts, thereby allowing BOTH contracts to make. Now, there is NO bridge player who ALWAYS finds winning leads, and leading CAN sometimes be a guessing game, but that does not alter the fact that the GIB robots SO often make absolutely STUPID leads, as exemplified here.

Okay, now the two links. First, to my table here, and then the second will be in the post below this one:

https://www.bridgeba...S7%7Cmc%7C11%7C

[benellis58]

The hand at the second table:

https://www.bridgeba...S8%7Cpc%7CSQ%7C

[benellis58]

Here is a hand where the GIB robot surprisingly found a reasonable lead, which was actually the killing lead, but the hopeless GIB robots STILL failed to beat the hand.

West, North, and East are all GIB robots. West is on lead against 3NT and seems to have two reasonable possibilities, a spade from KQJ8 or a diamond from QJ104. He opted for the diamond, perhaps because he correctly inferred from the auction that North held four spades.

On this particular random hand, the diamond lead was (or SHOULD have been!) the killer, because on the lead of any other suit, declarer has 9 TOP tricks, but the diamond queen traps dummy's K3 doubleton and EW now have (or SHOULD have!) 5 TOP diamond tricks of their own, to beat the contract one.

And yet I made (!)the contract anyway, after the EW robots totally botched the defense with a TYPICALLY inept performance. The diamond queen was covered by dummy's king, losing to East's ace, following which...East STUPIDLY returned the SEVEN of diamonds from his remaining holding of 8762. I, South, covered perforce with my only remaining diamond, the 9 (having started with 95 doubleton). West won his 10 and...SHIFTED (!) to the spade king. I, of course, won the spade ace and then cashed my 8 top tricks in clubs and hearts, thereby scoring plus 400 despite the fact that after the WINNING opening lead, EW had FIVE top tricks.

West had clearly been misled by his partner's stunningly stupid return of the SEVEN of diamonds, but West was FAR from blameless himself. Why? Because at the point he won trick two, he now already KNEW that South (who had opened 1NT, showing 15-17 HCP) had every remaining point in the deck apart from what West had in his own hand. He ALSO knew that South, who had responded 2H to Stayman, had at least 4 hearts. Therefore, he SHOULD have known that South had at least 9 TOP tricks when West shifted to ANYTHING except a diamond.

The GIB robots are abysmal defenders. The only thing that surprised me about their inept performance on this hand was that West actually made a decent opening lead! Since he's a GIB robot, I might have expected him to emulate the Wests in the two posts above...by leading his STIFF 6 of clubs (as opposed to the imbecilic leads of another STIFF 6 - in diamonds - on those two hands).

https://www.bridgeba...D6%7Cpc%7CS9%7C

[benellis58]

West, North, and East are all GIB robots. At trick three, the GIB robot sitting West, who KNOWS his partner East has only one remaining heart (trump) makes the astoundingly stupid play of popping his queen of hearts, thereby crashing his partner's king and holding EW to only one trump trick even though they were BORN with TWO NATURAL trump tricks. Perhaps I shouldn't have used the word "astoundingly", though, because I have previously seen the horrendous GIB robots commit this same type of atrocity many times.

https://www.bridgeba...S3%7Cmc%7C11%7C

[benellis58]

West, North, and East are all GIB robots. Given the club layout and the fact that North has "only" five spades, West can always take 8 tricks in no trump, so even if North had led a spade, the result would have been the same. But:

After the given auction, why on Earth would North opt to lead a heart from Q852 rather than a spade from AQ742? Yes, leads can often involve guesswork, and yes, on some layouts a heart could work out better than a spade...but it certainly seems that a spade is a more "normal" lead (from a FIVE-bagger rather than a four-bagger) and will likely prove superior more often than not.

https://www.bridgeba...ST%7Cpc%7CS3%7C

[pescetom]

benellis58, on 2025-November-13, 17:31, said:

Regardless of result, just consider the "thought processes" (ha, ha) of the GIB robot sitting North. I guess this was his "logic": "Partner opened 1D and then rebid 2D. When I led my diamond queen, partner overtook it with his king, winning the trick. Clearly, he also has the ace. Then he shifted to the 9 of clubs. He was undoubtedly PRAYING that I could win trick two so that I could play a second round of diamonds. Luckily for him, I won my club queen, so now I WILL play a second round of diamonds. We have found the only possible way to play a second round of diamonds!"

I think it's evident why I put "thought processes" and "logic" in quotation marks. For GIB robots, those quoted terms are rarely applicable.

That really is very gross.
I trust a real ("Advanced") GiB robot would not do the same (a hope, not an affirmation).

[benellis58]

Pescetom, it WAS a (so-called!) "Advanced" GIB robot. I only post about the so-called (!) "Advanced" ones. Are the (so-called!) "Advanced" GIB robots better than the GIB robots who are NOT "Advanced"? Perhaps, but if that's the case, the non-"advanced" ones must be REALLY, STUNNINGLY horrendous, because the "Advanced" ones are absolutely pathetic themselves.

[benellis58]

West, North, and East are all GIB robots. In the first three tricks of this hand, the West GIB robot did THREE things that they OFTEN do and which are OFTEN silly.

First, he made a highly questionable lead. Yes, leads can involve guesswork and luck, and yes, success or failure often depends on the random layout of the random hand being played, but his club lead looks strange and silly in any case.

Second, he was in a huge rush to pop his king of spades. It might not cost and might sometimes even be the winning play, but quite often these foolish GIB robots harm their defensive prospects with this type of (fear-induced?) hurry to grab their trick.

Third, having won his spade king at trick two, West decides his best possible action is to now play...another spade! The GIB robots LOVE to return the suit declarer just played. There's an old saying that if both sides play the same suit, ONE of the sides is wrong. In situations where the incompetent GIB robots do this, THEY are almost invariably the side that is wrong!

https://tinyurl.brid...se.com/338j2xc6

[benellis58]

West, North, and East are all GIB robots.

At trick 11, West leads the 5 of spades from K105. Declarer South calls for, perforce, the 8 of spades from dummy. GIB robot East makes a VERY stupid play that the hopeless GIB robots often make and that is usually wrong, namely third hand LOW. The incompetent GIB robot plays his JACK (rather than his ace) from AJ7, thereby allowing declarer South to win his queen (from Q96)...for South's TENTH trick in his 3NT contract. All East had to do to prevent the overtrick was to make the NORMAL and clearly CORRECT play of the ace (rather than his truly imbecilic play of the jack), and EW would have won all 3 of the last 3 tricks, but even a simple play like third hand high was beyond the capabilities of this clueless GIB robot.

https://www.bridgeba...SA%7Cpc%7CS9%7C