That's why we play with best hand

[thorvald]

GIB can't handle strong hands

 

Here it terrorized both declarers but in different ways

 

First my opponent

 

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CHuman%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C1S3HA973DAKJ872CA6%2CST9754HK86D53CK94%2CSAKJ2HQ4DQ64CQJ85%2CSQ86HJT52DT9CT732%7Csv%7C0%7Cah%7CBoard%2011%7Cmb%7C1D%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21D%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1S%7Can%7COne%20over%20one%20--%204%2B%20%21S%3B%206%2B%20total%20points%7Cmb%7CP%7Cmb%7C2D%7Can%7COpener%20rebids%20his%20D%20--%203-%20%21S%3B%2011-15%20HCP%3B%20twice%20rebiddable%20%21D%3B%2012-16%20total%20points%7Cmb%7CP%7Cmb%7C2H%7Can%7CNew%20suit%20--%203%2B%20%21H%3B%204%2B%20%21S%3B%2012%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C4H%7Can%7C5%2B%20%21H%3B%203-%20%21S%3B%2012-15%20HCP%3B%20twice%20rebiddable%20%21D%3B%2013-16%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CC2%7Cpc%7CCA%7Cpc%7CC9%7Cpc%7CC5%7Cpc%7CS3%7Cpc%7CS7%7Cpc%7CSA%7Cpc%7CSQ%7Cpc%7CSK%7Cpc%7CS8%7Cpc%7CC6%7Cpc%7CS5%7Cpc%7CD4%7Cpc%7CDT%7Cpc%7CDA%7Cpc%7CD5%7Cpc%7CH3%7Cpc%7CHK%7Cpc%7CH4%7Cpc%7CH5%7Cpc%7CS9%7Cpc%7CSJ%7Cpc%7CS6%7Cpc%7CD2%7Cpc%7CHQ%7Cpc%7CH2%7Cpc%7CH7%7Cpc%7CH8%7Cpc%7CDQ%7Cpc%7CD9%7Cpc%7CDK%7Cpc%7CD3%7Cpc%7CHA%7Cpc%7CH6%7Cpc%7CS2%7Cpc%7CHJ%7Cpc%7CDJ%7Cpc%7CC4%7Cpc%7CD6%7Cpc%7CC7%7Cpc%7CD8%7Cpc%7CST%7Cpc%7CC8%7Cpc%7CCT%7Cpc%7CD7%7Cpc%7CS4%7Cpc%7CCJ%7Cpc%7CC3%7Cpc%7CH9%7Cpc%7CCK%7Cpc%7CCQ%7Cpc%7CHT%7C]399|300[/hv]

 

2♥ could be 3-card, but should in my book also promise 5-card ♠. I think 2♥ is a really ugly bid, but as it is GF i think the right bid is 3♥ from south.

 

But 4♥ is making on the 4-2 fit

 

Also note that 2♦ is 11-15 HCP and south has 16 with a lot of controls

 

At my table this happened

 

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CThorvald%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C1S3HA973DAKJ872CA6%2CST9754HK86D53CK94%2CSAKJ2HQ4DQ64CQJ85%2CSQ86HJT52DT9CT732%7Csv%7C0%7Cah%7CBoard%2011%7Cmb%7C1D%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21D%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1S%7Can%7COne%20over%20one%20--%204%2B%20%21S%3B%206%2B%20total%20points%7Cmb%7CP%7Cmb%7C2H%7Can%7COpener%20reverse%20--%205%2B%20%21D%3B%204%2B%20%21H%3B%203-%20%21S%3B%2021-%20HCP%3B%2018-22%20total%20points%7Cmb%7CP%7Cmb%7C3D%7Can%7C3%2B%20%21D%3B%204%2B%20%21S%3B%208%2B%20HCP%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3N%7Can%7C5%2B%20%21D%3B%204-5%20%21H%3B%203-%20%21S%3B%2017-21%20HCP%3B%2018-22%20total%20points%3B%20likely%20stop%20in%20%21C%7Cmb%7CP%7Cmb%7C4N%7Can%7CBlackwood%20%28D%29%20--%203%2B%20%21D%3B%204%2B%20%21S%3B%2014%2B%20total%20points%7Cmb%7CP%7Cmb%7C5D%7Can%7COne%20or%20four%20key%20cards%20--%205%2B%20%21D%3B%204-5%20%21H%3B%203-%20%21S%3B%2017-21%20HCP%3B%2018-22%20total%20points%3B%20likely%20stop%20in%20%21C%7Cmb%7CP%7Cmb%7C5N%7Can%7CQuery%20kings.%20Have%20all%20keycards.%20Does%20not%20promise%20extras%20--%203%2B%20%21D%3B%204%2B%20%21S%3B%20%21DQ%3B%2014%2B%20total%20points%7Cmb%7CP%7Cmb%7C6D%7Can%7CNo%20king%20%28below%20D%29%20--%205%2B%20%21D%3B%204-5%20%21H%3B%203-%20%21S%3B%2017-21%20HCP%3B%2018-22%20total%20points%3B%20likely%20stop%20in%20%21C%7Cmb%7CP%7Cmb%7C7D%7Can%7CSignoff%20--%203%2B%20%21D%3B%204%2B%20%21S%3B%20%21DQ%3B%2014%2B%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CD5%7Cpc%7CD4%7Cpc%7CDT%7Cpc%7CDJ%7Cpc%7CD2%7Cpc%7CD3%7Cpc%7CDQ%7Cpc%7CD9%7Cpc%7CCQ%7Cpc%7CC3%7Cpc%7CC6%7Cpc%7CCK%7Cpc%7CS5%7Cpc%7CSA%7Cpc%7CS6%7Cpc%7CS3%7Cmc%7C11%7C]399|300[/hv]

 

2♥ as reverse showed 18-22 points, and that fits the hand, but single in partners suit should be downgraded, but the 6th ♦ qualifies the hand for a reverse

 

Over 3N the Bot checked Aces and with all aces it queried Kings.

 

Now looking at the hand ♣K would make 7♦ a fine contract, but when that was denied it simulated and found that even ♥K would make the grand a good slam. I assume that my destiny was given as soon as I answered 4 aces, and 5N was just a book bid and simulation first was executed after the response of 6♦

 

So neither of us found a way to 6♦, that looks like an OK contract.

[LBengtsson]

This is (one reason) why I do not play with robots: they do not have strategy to 'think forward' (as with chess bots). On this hand if I was North I would be thinking, what is my next bid after 1♠ if partner rebids 2♦? I have not got a sensible one in 2/1. I guess (and it is a guess) that 2/1 experts - and I confess I do not know 2/1 in full - would have not bid the 4 card ♠ suit here but would have made the immediate G/F response of 2♣. If there is a 4-4♠ to be found it can be found later.

 

As for the bidding sequence on the second hand I do not understand why the bot bid one more to 7♦? That is just crazy.

[Douglas43]

This is (one reason) why I do not play with robots: they do not have strategy to 'think forward' (as with chess bots). On this hand if I was North I would be thinking, what is my next bid after 1♠ if partner rebids 2♦? I have not got a sensible one in 2/1. I guess (and it is a guess) that 2/1 experts - and I confess I do not know 2/1 in full - would have not bid the 4 card ♠ suit here but would have made the immediate G/F response of 2♣. If there is a 4-4♠ to be found it can be found later.

 

As for the bidding sequence on the second hand I do not understand why the bot bid one more to 7♦? That is just crazy.

 

Would 1♦ -1♠ - 2♦- 3♣ not fit the bill? Or does 3♣ have some special meaning? (Genuine question, I usually play Acol not 2/1)

[pescetom]

Would 1♦ -1♠ - 2♦- 3♣ not fit the bill? Or does 3♣ have some special meaning? (Genuine question, I usually play Acol not 2/1)

2D understates the hand (imagine without hA) and is non-forcing, partner with a lesser hand than the one depicted might pass and still miss game.

I am comfortable with 2H, which is a slight overbid but cheaper and more descriptive than 3D.