Human vs. GIBBO

[virgosrock]

In MB sometimes an opponent gets disconnected. Then the deal is I think handed over to some all GIBBO table from the point the opponent went missing.

No way can you find out what transpired at the ALL-GIBBO table. At least I don't know of any way.

When I looked at this deal later I was livid since declarer has 2 sure losers and yet got 980.

But then looking at it further there is a way to make which GIBBO does quite often. Still I would like to know what transpired at the ALL_GIBBO table.

Also, a question is would the human declarer have found the play?

 

vrock

 

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[steve2005]

How did they make 6? Looks like it takes a defensive error.

[johnu]

How did they make 6? Looks like it takes a defensive error.

 

The final contract isn't shown, but presumably 6♠ is the final contract.

 

Obviously a club or heart opening lead lets 6 make and with North having 10 HCP, it is more likely that one of those leads is a mistake rather than just "unlucky". That's my guess as to why 6 was made, and I would give odds that ♣A was the opening lead.

 

A trump lead would give an expert declarer a chance to get this right. If you assume North has ♣A and ♥K for the passive spade lead, then you might risk a 2nd round diamond ruff, and win, the first spade in hand, play 2 rounds of diamonds, ruff a diamond, cross to dummy with a trump, play the last winning diamond and a few trumps.

 

When the ♣J isn't covered or the ace played, duck and North will be end played.

 

I don't think GIB is capable of that play so that's why I think North led a heart or club.

[virgosrock]

The final contract isn't shown, but presumably 6♠ is the final contract.

 

Obviously a club or heart opening lead lets 6 make and with North having 10 HCP, it is more likely that one of those leads is a mistake rather than just "unlucky". That's my guess as to why 6 was made, and I would give odds that ♣A was the opening lead.

 

A trump lead would give an expert declarer a chance to get this right. If you assume North has ♣A and ♥K for the passive spade lead, then you might risk a 2nd round diamond ruff, and win, the first spade in hand, play 2 rounds of diamonds, ruff a diamond, cross to dummy with a trump, play the last winning diamond and a few trumps.

 

When the ♣J isn't covered or the ace played, duck and North will be end played.

 

I don't think GIB is capable of that play so that's why I think North led a heart or club.

 

I thought GIBBO made it with strip squeeze and endplay which GIBBO is VERY good at and would do that instead of straight forward h finesse.

johnu, could you provide more detail in your play in 6S? bottom line is cash 5S, 4d(with ruff), and evaluate last 4 card position before you cash 6th spade. does not seem automatic as you suggest. Dummy has to pitch before GIBBO.

 

thanks

vrock

[johnu]

I thought GIBBO made it with strip squeeze and endplay which GIBBO is VERY good at and would do that instead of straight forward h finesse.

johnu, could you provide more detail in your play in 6S? bottom line is cash 5S, 4d(with ruff), and evaluate last 4 card position before you cash 6th spade. does not seem automatic as you suggest. Dummy has to pitch before GIBBO.

 

I didn't say the play was automatic. You have to decide if South has ducked ♣A (you need to go up ♣K), or North is leading away from ♣A after winning the first club.

 

You don't want to cash all the trumps before making the club play. If you play all the trumps, if an opponent comes down to ♣Ax and a heart, you can't afford to strip squeeze North for a heart return because they can cash 2 club tricks once you bare the ♣K (unless they have bared ♥K). You started out with ~75% chance to make the contract, ♣A or ♥K onside so you don't want to reduce your chances.