[mike777]

[quote name='jillybean2' date='Nov 14 2008, 06:42 PM']
<!-- PARTNERSNS begin --><table border=1> <tr> <td> <table> <tr> <td>Dealer:</td> <td> East </td> </tr> <tr> <td>Vul:</td> <td> NS </td> </tr> <tr> <td>Scoring:</td> <td> IMP </td> </tr> </table> </td> <td> <table border='1'> <tr> <th> <table> <tr> <th class='spades'>♠</th> <td> QT974 </td> </tr> <tr> <th class='hearts'>♥</th> <td> AQ86 </td> </tr> <tr> <th class='diamonds'>♦</th> <td> K94 </td> </tr> <tr> <th class='clubs'>♣</th> <td> A </td> </tr> </table> </th> </tr> <tr> <th> <table> <tr> <th class='spades'>♠</th> <td> KJ6 </td> </tr> <tr> <th class='hearts'>♥</th> <td> 9 </td> </tr> <tr> <th class='diamonds'>♦</th> <td> AT852 </td> </tr> <tr> <th class='clubs'>♣</th> <td> K864 </td> </tr> </table> </th> </tr> </table> </td> <td>  </td> </tr> </table><!-- PARTNERSNS end -->

West  North East  South

 -     -     1♣    1♦
 Pass  1♠    2♣    Pass
 Pass  2♥    Pass  2♠
 Pass  3♦    Pass  Pass
 Pass  

edit.
Jdonn said it all.

[P_Marlowe]

vuroth, on Nov 16 2008, 06:48 PM, said:

mikestar, on Nov 15 2008, 01:02 AM, said:

Definitely worth an immediate raise to 2♠. It is a no-brainer after a 1♦ overcall receives a 1♠ advance, which normally shows a five-card or longer suit.

This certainly is news to me. I think I've been bidding a lot of these incorrectly.

No.

It is a matter of partnership agreement, if your agreement
is, that bidding a new suit is forcing and showes only a 4
carder, than this is fine.
It is certainly true, that usually bidding a new suit showes 5
cards, but if the bid occurrs on the 1 level, than promising
only 4 cards is not uncommon.

I also think, that playing a change of suit as nonforcing is more
common, but I may wel be wrong.

With kind regards
Marlowe

[Codo]

In the first case, did you ever discuss what a double of 2 Club had shown?
Penalty? Take out? Extra strength?

You should try support doubles instead, showing 3 card spade support. This is even nice when partner had promised 5 Spades, because he can later judge better in competetive auction. And it is better when he is quite weak with a diamond fit, because you may establish your real fit lower.

In the second case, I would bid 2 Diamond with the south hand and 2 NT with north, leading to 3 NT, failing. But such is life.

[Infidel]

assuming N and S are on the same page for the first 2 rounds, perhaps N should cue the clubs instead of bidding 3d.