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Trump Coup with less trumps than defender

#1 User is offline   pescetom 

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Posted 2022-January-27, 11:47

Hand #12 in tuesday's national simultaneous tournament in Italy allowed declarer to reach this elegant finish after winning 10 tricks:



The contract is 6♥ by South, which makes when he now plays from dummy.

Is this a Trump Coup, or does it have some other name?

I ask because the descriptions I see say "To execute a trump coup, declarer must have exactly the same number of trumps as the defender" or similar.
Here we have one less, although the effect is the same.
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#2 User is offline   AL78 

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Posted 2022-January-27, 12:53

It looks like a combination of a trump coup and an endplay. If East ruffs high, declarer discard from hand and East is endplayed. If East ruffs low, declarer overruffs cheaply and plays a club and East is forced to ruff his partner's winner, then declarer makes the last trick with the trump ace.

It is a bit like when you learn squeeze play for the first time, you learn that you need to rectify the count so that you have one loser, yet some squeezes (e.g. a strip squeeze) operate on two or more losers.
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#3 User is offline   smerriman 

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Posted 2022-January-27, 12:59

It's even cuter when the 8 of clubs is a small trump; then you have a proper trump coup but when East ruffs high, you underruff. Don't think it has a name though other than just a trump endplay.
I have nothing worth contributing, bye
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#4 User is offline   pescetom 

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Posted 2022-January-27, 14:00

This perverse and fascinating hand was tricky in bidding terms too, I'll post it if I find time.
With strong diamonds in North and 33 HCP on the line, a moysian 6♥ was not the mainstream choice and maybe rightly so (MP), but the only slam that could make double dummy.

No surprise that even those who called it failed to make 6♥, as declarer has to decide early on the trump split (or so it seemed to me) as well as get things right.
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#5 User is offline   nullve 

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Posted 2022-January-27, 16:02

If East ruffs with the T or J, South must play the (club or heart) four in these three (surprsingly similar?) cases:

1)


2)


3)


1) and 2) both have trump promotion as a theme, obviously.
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#6 User is online   johnu 

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Posted 2022-January-27, 16:31

Kind of combination of Coup en passant, and trump coup or end play.
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