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--- competitive [2018/02/24 22:21]
ldrews
+++ competitive [2018/10/25 17:26] (current)
ldrews
@@ Line 2: / Line 2: @@
 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)**
@@ Line 11: / Line 13: @@
 **Intermediate hand (11-15 HCP)**
-Double if you have 3+ card support for all of the unbid suits.  When partner bids, give a single raise of partner’s suit to allow partner to continue if partner has points.
+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.
-Overcall at the cheapest NT level if you have a balanced hand and a stopper in opponents 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.
-The exception to the 11-15 HCP requirement is when you can overcall on the 1 level.  You can do so with 8+ HCP and a 5+ card suit (see Weak hand bids for 6+ card suits)
+**RUNT (Really Unusual NoTrump)**
-**Weak hand (<11 HCP)**
+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.
-With 8+ HCP and a 5 card suit, you may overcall at the one level.
+**Takeout Double**
-With 3+ cards in the unbid suits, overcall 1NT.  This is known as R.U.N.T. (Really Unusual NoTrump).  Partner treats it as a weak TO Double and bids their best suit if the 1NT is passed or doubled.  If Opener's LHO bids something else, then Responder can pass or bid appropriately.  This overcall is particularly troublesome to 2/1 bidders.
+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.
@@ Line 34: / Line 49: @@
 **Special conventions**
-There are a number of special conventions used when you have a distributional hand.  Examples are Brozel (defense against strong 1NT), Michael’s cue bid, Unusual 2NT, Ghestem, etc.  These can be added at a later date when the Bidding System has been mastered.
+**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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