Welcome to the Convention-of-the-Week Club. ::--  Help-Suit Game Try
Courtesy : Matt@Bridgetoday.com 
April 30, 2002
You pick up, neither side vulnerable:
♠ Kxx
 AJxx
 xx
♣ xxxx
Partner opens 1S. You raise to 2S and partner rebids 3C. What is your
call?
Convention of the club :  Help-Suit Game Try
The help-suit game try is a scientific device for bidding close games or
staying out of bad ones. After 1S, pass, 2S, or 1H, pass, 2H, a new suit
by opener is a game try, telling partner that if it's a close decision
whether to bid game, to look at the "help-suit" and see if he has any
help there.
What is the definition of "help there"?
Responder imagines that opener has three or four little in the suit bid
and sees if he can cover some of those losers:
A singleton or a doubleton is clearly helpful
Exactly three cards in the suit is usually not very helpful, unless you
have the ace or two honors.
Four or more cards in the suit might be helpful, but usually only if you
have an honor or two.
So what do you need to make a help-suit game try?
A help suit is at least 3 cards in length, and usually (but not always)
a weak spot in declarer's hand.
xxx or xxxx is a help suit
AKxx or Axx is a help suit
KJxx is a help suit
Come to think of it, almost any long suit is a help suit!
But a help suit shouldn't be too strong.
For example, KQJx is not a help suit, since you don't need any help
there!
So "help-suit game tries" is very a natural convention, in most cases.
♠ Kxx
 AJxx
 xx
♣ xxxx
1S - 2S
After your raise to 2S, partner bids 3D and you bid 4S. You are on the
border, to bid game or not, and your help in diamonds is enough to push
you over. If partner had bid 3H, you'd also bid game (you'd raise to
4H), but over 3C, you return to 3S, because your xxxx is not any help.
Let's see how you would do facing each of these three help-suit game-try
hands:
♠ AQJxx     ♠ Kxx
 Qx           AJxx
 KTxx        xx
♣ Ax          ♣ xxxx
1S      2S
3D      4S
A close 4S game.
♠ AQJxx    ♠ Kxx
 KTxx       AJxx
 Ax           xx
♣ Qx         ♣ xxxx
1S      2S
3H      4H
A close 4H contract. This is a difficult one, because 3H is important to
use as a natural game try.
♠ AQJxx    ♠ Kxx
 Qx          AJxx
 Ax           xx
♣ KTxx      ♣ xxxx
1S      2S
3C      3S
pass
Good stop. This is a poor 4S.
What do you lose by playing Help-Suit Game Tries?
You lose three things :: --
(1) You can't make a natural bid that might help you reach 3NT. 
For example:
♠ AKxxx    ♠ Jxx
 xx          QJxx
 KQJx      xxx
♣ Ax        ♣ KQx
1S      2S
3D      3NT
pass
This would be a wonderful auction to the top contract, but using
Help-Suit Game Tries, it can no longer be done, since 3D means something else.
(2) You lose the ability to make a natural slam try.
♠ AQxxxx    ♠ Kxx
 x              xxx
 AKxx         Qxxx
♣ Ax           ♣ QJx
1S      2S
3D      ?
Here opener wants to bid 3D as a natural slam try. Notice that they can
make 6D on a 3-2 diamond break, and 6S makes if the club finesse works.
But playing Help-Suit Game Tries prevents this exploration.
(3) The short-suit game try tells the opening leader too much about your hand.
Often it's right to lead the "help suit" on opening lead, since declarer
has identified it as his weak spot. This is especially true when the
opponents stop in a partscore after using a help-suit game try.
The good news is, however, that you can occasionally "psyche" a help
suit game try, if you want, and this may catch the opponents off guard.
For example:
♠ AKxxxx    ♠ Qxx
 KJTx        xxx
 Axx          xxxx
♣ --            ♣ AQJ
1S      2S
3C      4S
Here opener bids 3C to give the opponents the wrong picture of his hand.
Maybe the opening lead will be a club, just what he wants!
Note: If you try this tactic more than once every few sessions, you'd
better have your partner alert the opponents: "Help-suit game try,
usually, but my partner likes to fake this convention occasionally."
Check List: ::-  Help-Suit Game Try,  
(1) a new suit bid after partner raises one of a major to two of a major, asks partner to judge his hand for game, looking at his loser coverage in the "help suit."
(2) Opener's rebid of 2S (1H-2H-2S) or 3H (1S-2S-3H) may be a natural game try.