Different auctions, different plays

[Bbradley62]

I'm intrigued by this one... there were four different auctions at our ten tables, with all auctions leading to a contract of 4SS. For each auction, there was a different Trick 1. Maybe someone who is a better analyst than I am can explain why the various defensive actions are best given the different auctions?

 

Six of the tables had the simplest auction:

[hv=lin=pn|bbradley62,~~M8039,~~M8037,~~M8038|st%7C%7Cmd%7C3S2369JQAH36D58AC4%2CS4TH589JD34TKC7JA%2CS58H47TAD67JC5TQK%2C%7Crh%7C%7Cah%7CBoard%201%7Csv%7Co%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7C4S%7Can%7CPreempt%20--%207%2B%20S%3B%203-20%20total%20points%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CST%7Cpc%7CS5%7Cpc%7CS7%7Cpc%7CSQ%7C]360|270[/hv]When all Wests led ♠T, all Easts were clever enough to duck and make things less clear for declarer.

 

The other four Souths opened 1♠, but had various auctions after North responded 1N. One South rebid 2♠:

[hv=lin=pn|Human2,~~M8057,~~M8055,~~M8056|st%7C%7Cmd%7C3S2369JQAH36D58AC4%2CS4TH589JD34TKC7JA%2CS58H47TAD67JC5TQK%2C%7Crh%7C%7Cah%7CBoard%201%7Csv%7Co%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7C1S%7Can%7CMajor%20suit%20opening%20--%205%2B%20S%3B%2011-21%20HCP%3B%201%7Cmb%7Cp%7Cmb%7C1N%7Can%7CForcing%20one%20notrump%20--%206-11%20HCP%3B%2012-%20total%20points%20%7Cmb%7Cp%7Cmb%7C2S%7Can%7C6%2B%20S%3B%2011%2B%20HCP%3B%2012-16%20total%20points%7Cmb%7Cp%7Cmb%7C3S%7Can%7C2%20S%3B%2011-%20HCP%3B%2010-12%20total%20points%20%7Cmb%7Cp%7Cmb%7C4S%7Can%7C6%2B%20S%3B%2015-16%20total%20points%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CST%7Cpc%7CS5%7Cpc%7CSK%7Cpc%7CSA%7C]400|300[/hv]East was protecting against West having underled ♠A or ♠Q?

 

Two Souths rebid 3♠:

[hv=lin=pn|Human3,~~M8048,~~M8046,~~M8047|st%7C%7Cmd%7C3S2369JQAH36D58AC4%2CS4TH589JD34TKC7JA%2CS58H47TAD67JC5TQK%2C%7Crh%7C%7Cah%7CBoard%201%7Csv%7Co%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7C1S%7Can%7CMajor%20suit%20opening%20--%205%2B%20S%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7Cp%7Cmb%7C1N%7Can%7CForcing%20one%20notrump%20--%206-11%20HCP%3B%2012-%20total%20points%20%7Cmb%7Cp%7Cmb%7C3S%7Can%7C6%2B%20S%3B%2017-20%20total%20points%7Cmb%7Cp%7Cmb%7C4S%7Can%7C2%2B%20S%3B%2011-%20HCP%3B%208-12%20total%20points%20%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CD3%7Cpc%7CD6%7Cpc%7CD9%7Cpc%7CDA%7C]400|300[/hv]Those two Wests led small ♦. I would have thought this auction made it more likely that South had ♦ honors, so underleading the ♦K would be more dangerous, but my opening leads suck, so maybe there's a good reason for this lead.

 

The last South rebid 4♠ and got a ♥ lead. Very unlucky...

[hv=lin=pn|Human4,~~M8051,~~M8049,~~M8050|st%7C%7Cmd%7C3S2369JQAH36D58AC4%2CS4TH589JD34TKC7JA%2CS58H47TAD67JC5TQK%2C%7Crh%7C%7Cah%7CBoard%201%7Csv%7Co%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7C1S%7Can%7CMajor%20suit%20opening%20--%205%2B%20S%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7Cp%7Cmb%7C1N%7Can%7CForcing%20one%20notrump%20--%206-11%20HCP%3B%2012-%20total%20points%20%7Cmb%7Cp%7Cmb%7C4S%7Can%7C7%2B%20S%3B%2015-%20HCP%3B%2017%2B%20total%20points%3B%207%2B%20relay%20points%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CH5%7Cpc%7CHA%7Cpc%7CH2%7Cpc%7CH3%7C]400|300[/hv]

[cloa513]

Love the crap descriptions- 4S cannot possibly have 3 TP with 7 spades given the way GIB calculates TP (I'd say at least 6 TP {3 for length of spades and 3 for shortness} ) and no HCP description. If GIB really has no HCP count for 4S how can it simulate the play- there is a lot of choices with only 7 spades in South as the information - the leads should have been much more varying. That description like many others is just plain lazy.