LD Precision Club

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**Competitive Bidding**

Competitive bidding is when the opponents open the bidding.  Right away you know where 12+ points reside.  That leaves around 28- points for the rest of the table.  Under normal random distribution, that means you and your partner have around 18 points between you.  Normally not enough for a game, so if your partnership is to get anything normally, it will be a part score.  However, miracles do happen.

One of the features of competitive bidding is to exchange distribution for HCP.  Many of the competitive bidding conventions outline below make use of distribution to more safely compete with opponents stronger HCP hands.

**Strong hand (16+ HCP)**

Your RHO has opened the bidding and you have a strong hand.  Your partner and your LHO share the remainder of the points, about 12 or so.  If your partner has 8 or so points you may indeed have a game in NT or the majors, particularly since you know where most of the opponents points are.  But how to get partner to bid?

You double.  Partner thinks this is a Takeout Double and is forced to bid.  Normally you will pass partners bid or raise partner’s suit since a Takeout Double promises support for the unbid suits.  If partner bids your suit, then jump raise to  encourage partner.  If partner bids something else, then you rebid your suit.  This introduction of a new suit after a “Takeout Double” is the signal to your partner that you have a strong hand with a 5+ card suit, not support for the unbid suits.  Subsequent bidding is natural.

**Intermediate hand (11-15 HCP)**

Double if you have 3+ card support for all of the unbid suits or you have NT distribution.  When partner bids, give a single raise of partner’s suit or bid cheapest NT to allow partner to continue if partner has points.

Overcall at the cheapest level if you have a 5+ card suit.

The exception to the 11-15 HCP requirement is when you can overcall on the 1 level.  You can do so with 8-15 HCP and a 5+ card suit (see Weak hand bids for 6+ card suits).  The responses to the overcall will have to be adjusted to account for the possibly weaker hand.  So the Combined Bergen Response of 3C requires 10-12 points and 4+ support.  The single raise now includes 6-9 point hands with 4+ support.  Do not use the preemptive raise (3M) when vulnerable.  Otherwise systems are on.

**RUNT (Really Unusual NoTrump)**

With 8-12 HCP and 3+ cards in the unbid suits, you may bid 1NT (alerted).  This is a cheap TakeOut bid.  Partner is expected to bid their longest and strongest suit.  This bid interferes with 2/1 systems a lot.

**Takeout Double**

A double of the opponents 1 level open can represent 3 types of hands:
  * 13-15 HCP, 3+ cards in unbid suit
  * 13-15 HCP, balanced hand
  * 16+ HCP, any distribution

If Overcaller raises Advancer's suit on rebid, then original bid was 13-15 HCP.
If Overcaller rebids NT then original bid was 13-15 HCP and balanced hand with stopper.
If Overcaller rebids new suit or jumps in Advancer's suit original bid was 16+ HCP.

This means that you do not overcall with 11-12 HCP and a balanced hand.

**Weak hand (<11 HCP)**

With 8-15 HCP and a 5 card suit, you may overcall at the one level.

The rest of the bids are preemptive bids meant primarily to interfere with opponents bidding.

Weak Jump Overcall (WJO):  6-10 HCP and 6+ card suit.  Similar to opening a weak 2.  Note the lack of the requirement for 2 of the top 5 honors.

Double Weak Jump Overcall:  7+ card suit, few points, no defensive capability


**Special conventions**

**Modified Ghestem**

With a weak (<11 HCP) 2 suited hand you may use the Modified Gestem convention.  This is an amalgam of 3 other 2-suited conventions:

With 5/5 in the top 2 unbid suits, cue bid opponents suit (Michaels).

With 5/5 in the bottom 2 unbid suits, bid 2NT (Unusual NT).

With 5/5 in the top and bottom unbid suits, bid 3C (Ghestem).

**Defence Against Strong 1NT**

There are a number of popular defenses that are used against a strong 1NT open by opponents.  We have chosen to use the Meckwell 1NT Defense: 

^Opener^Overcaller^Advancer^Description^
|1NT| | |Strong NT - Any NT open that includes 16 HCP|
| |Double| |Strong or single suited|
| | |Pass|Balanced, 8+ HCP|
| | |2C|<8 HCP, any distribution|
| | |2D|8+ HCP, any distribution|
| |2C| |2 suited, C and H|
| |2D| |2 suited, D and H|
| |2H| |2 suited, H and S|
| |2S| |2 suited, S and a minor|
| | |2NT|Which minor?|
| |2NT| |2 suited, C and D|
| |3C| |3 suited, D short|
| |3D| |3 suited, H short|
| |3H| |3 suited, S short|
| |3S| |3 suited, C short|

**Defense Against Weak 2**

^Opener^Overcaller^Advancer^Description^
|2D(Natural)/2H/2S| | |Weak 2, normally 6+ suit, 6-10 HCP)|
| |Double| |Initiate Transfer Lebensohl sequence|
| | |2X|Weak, to play|
| | |2NT|Slow Transfer Lebensohl path, relay to 3C|
| | |3X|Fast Transfer Lensohl path, Transfer|

See [[transferlebensohl|Transfer Lebensohl]] for more information.
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