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Defense problem

#1 User is offline   AL78 

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Posted 2023-April-30, 14:50

Swiss pairs playing Acol weak NT, 3 weak twos:



You lead the ♦K which holds. What do you play at trick two?
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#2 User is online   smerriman 

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Posted 2023-April-30, 14:53

Do I get to see dummy and partner's card? :)
Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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#3 User is offline   DavidKok 

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Posted 2023-May-01, 01:06

I'm going to guess a spade switch is best, but I would also like to have all legally available information before committing.
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#4 User is offline   AL78 

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Posted 2023-May-01, 01:19

I'm sorry, I completely neglected to put the dummy down. Lets try that again:



♦K, 3, T, 2

Your move?
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#5 User is offline   DavidKok 

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Posted 2023-May-01, 02:32

Is the ten encouraging? I see two main ways to continue:
  • Play a low spade, intending to cut declarer's possible diamond ruffs. In a perfect world declarer has 5♠4♦, partner wins the ace of spades and plays another, wins the diamond return and plays a club. If we give declarer any ace though they can manage a diamond ruff, but we can prevent them from taking two. This should force them to guess the hearts, at least.
  • We can play partner for heart shortness (hopefully a void, but maybe a singleton) and play ♥9 hoping to play on crossruff lines. If partner's ♦T is discouraging we might have to play for this distribution, although it is a bit strange for declarer to bid 2♠ rather than double with both majors. So we'd likely have to find partner with a singleton in hearts and the ace of spades, or the singleton ace of hearts.

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#6 User is offline   AL78 

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Posted 2023-May-01, 02:52

View PostDavidKok, on 2023-May-01, 02:32, said:

Is the ten encouraging? I see two main ways to continue:
  • Play a low spade, intending to cut declarer's possible diamond ruffs. In a perfect world declarer has 5♠4♦, partner wins the ace of spades and plays another, wins the diamond return and plays a club. If we give declarer any ace though they can manage a diamond ruff, but we can prevent them from taking two. This should force them to guess the hearts, at least.
  • We can play partner for heart shortness (hopefully a void, but maybe a singleton) and play ♥9 hoping to play on crossruff lines. If partner's ♦T is discouraging we might have to play for this distribution, although it is a bit strange for declarer to bid 2♠ rather than double with both majors. So we'd likely have to find partner with a singleton in hearts and the ace of spades, or the singleton ace of hearts.



The ten is encouraging (we play HELD).
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