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	<title>Non-Natural Systems</title>
	<description>Non-Natural System Discussion Forum</description>
	<link>https://www.bridgebase.com/forums/index.php</link>
	<pubDate>Sun, 15 Mar 2026 05:08:17 +0000</pubDate>
	<ttl>30</ttl>
	<item>
		<title>Bid to 2 level quickly with strong balanced hands</title>
		<link>https://www.bridgebase.com/forums/topic/91749-bid-to-2-level-quickly-with-strong-balanced-hands/</link>
		<description><![CDATA[In the past few years mexican 2D(or 2C)has become more and more popular among top players, if my observation is right.<br />
I used to be against it, but a few analysis shows that 2NT opening is a big winner versus natural 1 minor, and probably also a winner versus precision 1C.<br />
So now I wonder if bid to 2 level quickly with a strong balanced hand is theoratically very sound?<br />
It just prevents opponents from making a cheap overcall which matters much more than staying in 1NT  or  slam auction.<br />
This also applies to meckwell 1C-2D 8-10 balanced sequence which now I believe is better than putting 8-10 balanced into 1D or 1H——I lost in a few occasions when fourth seat was able to overcall.]]></description>
		<pubDate>Sun, 15 Mar 2026 05:08:17 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91749-bid-to-2-level-quickly-with-strong-balanced-hands/</guid>
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		<title>DCB query</title>
		<link>https://www.bridgebase.com/forums/topic/91653-dcb-query/</link>
		<description><![CDATA[<div width="100%" height='200' class="handviewer"><iframe class="hv_frame" src="https://www.bridgebase.com/tools/handviewer.html?pc=n&w=skqt5hakj86datc82&e=sa98642hqd943caq7&d=w&v=n&b=12&a=1cp1h(4%2B!S)p1sp2s(0-2!H)p2np3h(6-1-3-3)p3sp4d(7%20QP)p4hp4n(!S-y%2C%20!D-no)p5cp5d(!C%20-%200%2F4%2B%20QP)p5hp5s(!H%20honour%3F)p7nppp" width='266' height='200'></iframe><div class="hv_comments"></div></div><div class="hv_footer"><hr /></div><br />
<br />
3<span class='hearts'>&hearts;</span> = 6-1-3-3<br />
4<span class='diamonds'>&diams;</span> = 7 QPs (3/2/1)<br />
4N = <span class='spades'>&spades;</span> - yes, <span class='diamonds'>&diams;</span> - 0/4+ QP (so 0 this time)<br />
5<span class='diamonds'>&diams;</span> = <span class='clubs'>&clubs;</span> - 0/4+ QP, so A-Q.<br />
5<span class='spades'>&spades;</span> = ?<br />
<br />
With DCB, we switch to positive cueing (PCB) with singletons.<br />
Our agreement with stiff honours devalues K & Q:<br />
A = 3 QP<br />
K = 1 QP, then cue to show it<br />
Q = 0 QP, then ignore?<br />
<br />
So this is the question.<br />
<br />
DO you ignore stiff queens completely? Or<br />
Do ignore them when counting QP but still cue them as stiff A/K/Q?]]></description>
		<pubDate>Tue, 17 Feb 2026 10:41:27 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91653-dcb-query/</guid>
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		<title>weak No Trump Statistics</title>
		<link>https://www.bridgebase.com/forums/topic/91612-weak-no-trump-statistics/</link>
		<description><![CDATA[Earlier year I started keeping some detailed statistics on the games that I play with my son. At the moment my sample size is 412 hands with an average score of 52.1 %.  Our NT opening is 10-13 unless in 3rd or 4th seat vulnerable where we open 1NT with 13-15. (In 4th seat, rule of 15 applies).  This means that when we have a NT distribution of 14 or 15 HCP in 1st or 2nd seat or white in 3rd or 4th seat we open 1D. We also put ALL 5332 hands into 1D or 1NT (hence when we open 1M we are 2-suited or have 6+).<br />
<br />
With that background, on 412 hands, we have opened 1NT 57 times and we have opened a balanced 1D hand 19 times<br />
<br />
Starting with the 1NT opening hands, we played the hand 42 times (not necessarily in NT) and defended the hands 15 times (the opponents got the bid). Our average score respectively was 60% and 57% (total 59%)<br />
   <br />
When I break the 1NT opening by HCP, the data is less credible, so I calculated the average and the median with the median being probably a better statistic<br />
<br />
10 HCP opened 16 times for an average 58 and a median 54<br />
11 HCP opened 11 times for an average 69& ands a median 81<br />
12 HCP opened 13 times for 59 and 65<br />
13 HCP opened 12 times for 53 and 58<br />
for 14 and 15 HCP, opened 5 times for 55 and 47%. The reason we open 1nT with 14 or 15 HCP so infrequently is because we would have to be in 3rd or 4th seat and be vulnerable. <br />
<br />
Out of the 57 times we opened 1NT, we had a 5 card Major (5332) 6 times, played 5 times, defended once and out scores were 25,38,48,54,72, and 74 so I don't think including 5 card Majors in our 1NT bid has had any impact yet.<br />
<br />
*****************************************8<br />
<br />
With regards to the 1D opening, the vast majority of times when we open 1D with a balanced hand we have 14 or 15 HCP (to have less means we are in 3rd or 4th seat vulnerable with 10-12 HCP and partner has already passed)<br />
<br />
The data I have is a small sample: 10 times we defended and 9 times we played the hand. When we defended, our median score was 29% and when we played our median score was 63.  The samples are so small as to really be non-credible, but it is apparent that opening 1D with 14 or 15 is allowing the opponents to more easily compete.<br />
<br />
<br />
Out of the 19, 9 times we had 14 HCP and 10 times we had 15 HCP.  Interestingly, 5 out of the 19 we had a 5M332 distribution and got the bid 4 times. It does not appear that putting 5M332 hands into the 1D bid has been a negative on this very small sample<br />
<br />
*******************************************<br />
<br />
Possible conclusions ...1) SO far, putting 5M332 hands into 1D or 1NT does not seem to have hurt us and thus gives our 1M openings an advantage. 2), Opening 1D with 14 or 15 HCP allows the opponents to compete <br />
<br />
Contemplation:  change my 1NT opening range to 10-14 or 11-15  in 1st or 2nd seat or white. If partner is a passed hand, continue with 13-15 when red<br />
<br />
I welcome any comments or questions.]]></description>
		<pubDate>Sun, 01 Feb 2026 13:33:18 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91612-weak-no-trump-statistics/</guid>
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		<title>Response structure over intermediate 2D (no 4CM)...</title>
		<link>https://www.bridgebase.com/forums/topic/91522-response-structure-over-intermediate-2d-no-4cm/</link>
		<description><![CDATA[Do folks have any recommendations for a response structure over an intermediate 2<span class='diamonds'>&diams;</span> opening (say 11-15ish) with no 4CM, but possibly 4+<span class='clubs'>&clubs;</span>? In case it's relevant, 5<span class='clubs'>&clubs;</span>-5<span class='diamonds'>&diams;</span> hands are opened with 2<span class='clubs'>&clubs;</span>.<br />
<br />
It's possible to play 2<span class='hearts'>&hearts;</span> as a symmetric relay with a +1 shape resolution, but it seems really cramped, and it's tough to try and fit in the invite hands over it.]]></description>
		<pubDate>Fri, 02 Jan 2026 06:41:39 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91522-response-structure-over-intermediate-2d-no-4cm/</guid>
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		<title>Precision: 1C - (4H) - X</title>
		<link>https://www.bridgebase.com/forums/topic/91502-precision-1c-4h-x/</link>
		<description><![CDATA[1<span class='clubs'>&clubs;</span> - (4<span class='hearts'>&hearts;</span>) - X<br />
<br />
How do people play this double?<br />
(I'm assuming vulnerability and form of scoring make no difference.)<br />
<br />
Is it "transferable values" and what does that mean?<br />
Balanced-ish with a couple of cover cards? How strong?<br />
<br />
Is it takeout, so maybe a 4-1-4-4 7-count?<br />
<br />
Is it a penalty suggestion, so a likely trump trick plus a bit outside?<br />
Opener needs great shape to remove.<br />
<br />
Given the auction and your agreements, what should opener do with<br />
<br />
<span class='spades'>&spades;</span>T6 <span class='hearts'>&hearts;</span>A5 <span class='diamonds'>&diams;</span>AQT3 <span class='clubs'>&clubs;</span>AQJ54 ?<br />
<br />
Would vul and scoring affect your answer?<br />
<br />
TIA]]></description>
		<pubDate>Wed, 24 Dec 2025 07:50:54 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91502-precision-1c-4h-x/</guid>
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		<title>dealing with 1NT overcall</title>
		<link>https://www.bridgebase.com/forums/topic/91476-dealing-with-1nt-overcall/</link>
		<description><![CDATA[In first seat, playing Precision, you open 1D and are overcalled 1NT ( say 15-18).  I am curious if anyone has any special agreements over the opponent's 1NT..Does "Hello", (or any other system) make sense ?]]></description>
		<pubDate>Mon, 15 Dec 2025 14:17:44 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91476-dealing-with-1nt-overcall/</guid>
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		<title>Responding to a 1S fert</title>
		<link>https://www.bridgebase.com/forums/topic/91459-responding-to-a-1s-fert/</link>
		<description><![CDATA[We continue to play Strong Pass in some events in Australia.<br />
We figure the method will die out if/when most of us give up.<br />
<br />
We play strong club vul, strong pass not. 13+ pass, openings are 7-12.<br />
Thus the 1<span class='spades'>&spades;</span> fert is 0-6(7). It has scored well. <br />
Good to preempt one major and bid the other.<br />
(Also, if they double 16+ say, what is their negative?)<br />
<br />
 <br />
Anyway, our responses are simple after 1<span class='spades'>&spades;</span> - (nb) - ?<br />
<br />
pass = up to 14-ish, a bit more with spade length<br />
1NT = 15-18, maybe unbalanced, maybe a bit less with short spades<br />
2<span class='clubs'>&clubs;</span> = 19+ unb<br />
2<span class='diamonds'>&diams;</span>/<span class='hearts'>&hearts;</span>/<span class='spades'>&spades;</span> = overcall-style<br />
2NT = 19-20<br />
<br />
We can probably do better. The other day I picked up<br />
<br />
<span class='spades'>&spades;</span>KQTx <span class='hearts'>&hearts;</span>Axxxx <span class='diamonds'>&diams;</span>AKJx <span class='clubs'>&clubs;</span>---<br />
<br />
2<span class='hearts'>&hearts;</span> and 1NT are ugly, though either would have worked well on the actual layout.<br />
<br />
I'm thinking it's better to use 2m as Aspro (or Asptro), so<br />
2<span class='clubs'>&clubs;</span> = hearts & another<br />
2<span class='diamonds'>&diams;</span> = spades & a minor<br />
<br />
Is that an improvement?<br />
What elso might we try?<br />
<br />
TIA]]></description>
		<pubDate>Thu, 11 Dec 2025 02:12:51 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91459-responding-to-a-1s-fert/</guid>
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		<title>Auby-Ebenius Club</title>
		<link>https://www.bridgebase.com/forums/topic/91422-auby-ebenius-club/</link>
		<description><![CDATA[I'm reading this system, Does anyone know what CRASHO stands for? and what is TS2Ms ?]]></description>
		<pubDate>Wed, 26 Nov 2025 09:21:35 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91422-auby-ebenius-club/</guid>
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		<title>weak preemptive  bids</title>
		<link>https://www.bridgebase.com/forums/topic/91201-weak-preemptive-bids/</link>
		<description><![CDATA[How does this look ? Playing Precision, Opening 2NT shows 5-5 in minors, 11-15 HCP;  3NT is gambling, 4NT is undefined, all bids 3c and higher show a weak hand in the next denomination..eg. 3D shows weak hand with Hearts, 3S shows weak hand with long clubs, etc.  One consequence would be there is no preemptive 3C bid.  These bids would be alerted and not announced as transfers, because when white vs red, Responder may want to pass and go down for 7 for 350...So 3S - alert = please explain - "weak hand with long clubs" - all pass would be a possible sequence.  This is in ACBL world]]></description>
		<pubDate>Sun, 07 Sep 2025 21:25:02 +0000</pubDate>
		<guid isPermaLink="false">https://www.bridgebase.com/forums/topic/91201-weak-preemptive-bids/</guid>
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		<title>Responses to 1sp</title>
		<link>https://www.bridgebase.com/forums/topic/91154-responses-to-1sp/</link>
		<description><![CDATA[Do non-natural responses to a natural (5cM presumably but that might not be essential) 1<span class='spades'>&spades;</span> opening belong here or in "Natural Systems"?<br />
<br />
Anyway:<br />
1NT NF (OK SF, I should stop flogging that dead horse)<br />
2<span class='clubs'>&clubs;</span> GF relay<br />
2<span class='diamonds'>&diams;</span> 5+ hearts, primarily less-than-gf hands<br />
2<span class='hearts'>&hearts;</span> 3+ support, (8?)9+ support points<br />
2<span class='spades'>&spades;</span> 3+(usually just 3) support, 4-7(8) support points<br />
Higher responses I am not sure about, but maybe something like<br />
2NT invitational with one long minor (could throw some extreme gf hands in also)<br />
3<span class='clubs'>&clubs;</span> weak (6-9 ish) both minors<br />
higher bids are various distributional raises, maybe also a couple of bids for hands with very long hearts<br />
<br />
So for example<br />
1<span class='spades'>&spades;</span>-2<span class='diamonds'>&diams;</span><br />
2<span class='hearts'>&hearts;</span>-pass (six-card hearts, less than invitational)<br />
<br />
1<span class='spades'>&spades;</span>-1NT<br />
2m-2<span class='hearts'>&hearts;</span> (five hearts as a consequence of the above)<br />
<br />
Has anyone tried something like this?]]></description>
		<pubDate>Mon, 25 Aug 2025 08:29:31 +0000</pubDate>
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