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DDS contradicts BBO Helper BBO Helper appears to have it wrong.

#1 User is offline   Dale57 

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Posted Yesterday, 07:01

Per DDS, N/S can be held to one overtrick in NT. However, BBO Helper says two.

https://tinyurl.brid...se.com/yckw8ypy

I don't know where to ask for guidance in posting images of hands. I am asked for a URL but only have screenshots to offer. What am I overlooking?
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#2 User is offline   PrecisionL 

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Posted Yesterday, 08:27

120 says both of my apps. Bridge Solver.
Ultra Relay: see Daniel's web page: https://bridgewithda...19/07/Ultra.pdf
C3: Copious Canape Club is still my favorite system. (Ultra upgraded, PM for notes)

Santa Fe Precision published 8/19. TOP3 published 11/20. Magic experiment (Science Modernized) with Lenzo. 2020: Jan Eric Larsson's Cottontail . 2020. BFUN (Bridge For the UNbalanced) 2021: Weiss Simplified (Canape & Relay). 2022: Canary Modernized, 2023-4: KOK Canape, 2025-6: Canape!
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#3 User is offline   johnu 

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Posted Yesterday, 18:39

You don't need a double dummy analyzer for this hand. Defense leads a spade, declarer may or may not hold up a trick with A. Declarer has 7 top tricks, 4 hearts, and the other 3 aces.

Declarer's best play for an 8th trick is to lead to the Q. West can play the K and the defense can cash the rest of the spades (4 total spade tricks) which is 5 tricks for the defense. You can't develop a 2nd diamond trick without losing 2 diamond tricks.

Sidenote: If West leads a diamond at trick 1, declarer can make 9 tricks, 4 hearts, A, A, and 3 diamond tricks.
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