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Bid 'em up Unusual end position

#1 User is offline   nige1 

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Posted 2020-August-04, 16:49


From a Robot rebate 55% where this delicate effort increased our score to 54% :) just out of the money :(
GIB (North) conducts an accurate scientific auction to end up as one of 3 declarers in a fragile 6♦.
East leads a ♣. (A trump is the only lead to defeat the slam).
Hit Next to peruse the play :)


In an unusual 3-card ending :) North ruffs his ♥Q with South's ♦8
to coup the East-West trump holding.

Guthrie.tech
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#2 User is offline   nullve 

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Posted 2020-August-04, 16:57

Wow!
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#3 User is offline   shyams 

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Posted 2020-August-04, 17:07

I think nullve's comment captures it!

Thank you for sharing, nige1.
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#4 User is offline   nige1 

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Posted 2020-August-04, 17:59


If that was worth a "Wow" :)
Then how about this construction?
Similar hand with
- ♠ trumps, and
- Hand rotated to make South declarer.

At double-dummy, 6♠ can succeed, on any plain-suit lead.
Declarer cashes 3 plain-suit tops, while ruffing 2 ♣s and 2 ♥s
to reach the following 6 card ending, with North on lead....

This ending is truly amazing.
With ♠ trump, and North to lead, North-South to make 5 of the last 6 tricks... ...
North leads ♦9 -- the curse of Scotland :)
A If East fails to cover, then declarer cashes ♦K, ruffs a ♦, and ruffs a ♥ to reach the same 3-card ending as in the OP.
B.So East covers ♦9 with ♦J and South ruffs with ♠2.
Now South ruffs a ♥ with North''s ♠8, end-playing East :)
B1. If East discards a ♦, then North leads ♦A and another. If East ruffs high then South discards.
B2. If East wins ♠Q and leads another, then South finesses, draws trump and cashes 2 ♥s.
B3, If East wins ♠Q and exits into North's ♦ tenace
-- it really is a ten-ace -- :)
Then North wins 2 ♦s and coups East's trumps.

Guthrie.tech
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#5 User is offline   FelicityR 

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Posted 2020-August-04, 23:45

Thanks for posting, Nigel. I worry for mankind when bridge robots make plays like that :) But, in all honesty, given the lack of solidity in the trump suit, and the need to crossruff to establish tricks, it's the only way that this contract is likely to be made.

Though it's quite beautiful as well as 'Wow'
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#6 User is offline   smerriman 

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Posted 2020-August-05, 04:31

View PostFelicityR, on 2020-August-04, 23:45, said:

I worry for mankind when bridge robots make plays like that :)

Robot rebate is human-declare, so the beauty was all nige1's work :) Very cool.
A better handviewer
Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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#7 User is offline   FelicityR 

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Posted 2020-August-05, 07:39

View Postsmerriman, on 2020-August-05, 04:31, said:

Robot rebate is human-declare, so the beauty was all nige1's work :) Very cool.


Thank you for pointing this out, smerriman. (Apologies Nigel I honestly didn't know)

'Wow' 'Beautiful' 'Very cool' I think Nigel will be chuffed to bits :)
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