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All comments by Alan Frank
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@Ed: It is irrelevant to whether there was MI, but once MI is established and you need to determine what a likely result would have been in the absence of MI, I believe it is relevant.
18 hours ago
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Tough lead–any suit costs a trick.
June 24
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@Michael: The purchase of lottery tickets does not necessarily demonstrate a lack of knowledge of statistics–we pay money for the fun of playing bridge; others pay money for the fun of playing the lottery. Also, utility functions are nonlinear. Suppose I had the opportunity to pay $1 for a one in two hundred million chance to win a hundred million dollars. It would make some sense for me to do this, as the loss of a dollar would have literally no impact on my life and the gain of a fortune would have a significant impact. However, it is not worth the effort for such a small fraction of “significant,” plus it's the principle of the thing.
June 21
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@Monty: “Rarely” compared to Chris Compton, perhaps. Someone who plays at the club twice a month, a few weekend tournaments per year, and maybe a few days at an NABC if it is in a good location could well be serious about the GNT but have a MP count that does not well reflect their ability.
June 21
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+1 to the pro for opening 1 rather than 1NT.
June 20
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I've had this idea of searching (preferably with help from the BW staff) for all the articles where they both commented and editing it into a book.
June 20
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I don't see how it can be penalty when they are in a GF auction. Takeout seems more likely to come up than lead directional.
June 18
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Partner may have a good hand (in context) and is free to move over 3NT.
June 18
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4. Hoping that a jump to 6 over 4 will give partner the right picture, though I would be very interested to see a simulation of 6 vs 6.
June 18
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When posting a hand, please be specific about the cards played. What diamonds were led, followed, and discarded?
June 17
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Suppose that there are two copies of a board with different vulnerability markings–what then? In a pair game, I suppose you score it like a fouled board with separate sets of scores for each. But what about a team game? Does it matter whether the vulnerability was relevant to the result?
June 17
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Would opener ever raise in competition?
June 17
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I am not fond of this hand as a 2 opener with so much outside strength. Partner may take a phantom sacrifice otherwise misjudge the auction.
June 16
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It can be useful to have redouble ask partner to bid the suit himself, such as if opener has only small cards in the suit, in case responder holds a positional value.
June 16
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Unfortunately, comments don't get walked by search engine spiders.
June 16
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There is some overlap between this and a proposal I had made to allow the article author to add labels. It is probably possible to somewhat mimic the folder proposal with one's browser's bookmark feature.
June 16
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If the opponents were vulnerable, I'd pass, but +100 may not be enough.
June 15
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On board 9, where you left it to the “arithmeticians” to figure out how good 6 is, I took up the gauntlet. As I see it, the main chance is setting up the dummy, which requires hearts 3-3 (or doubleton QJ) with clubs 4-2 or better (32.6%) and hearts 4-2 (or North having a stiff quack) with clubs 3-3 and the diamond finesse on to provide a dummy entry (8%). However, if the defense doesn't lead trump, there is an additional chance when neither round suit breaks of ruffing a spade and running four diamonds (4.2%) to go with two hearts and five clubs. Even with that, it's 45.2%–not quite good enough to bid, though not unreasonable. I think a squeeze is unlikely.
June 14
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Since you mention it, the one strategy of designing bidding systems to reduce UI issues is to have bids which show non-adjacent hand types. Here is an example. I am not saying it is a good convention, just trying to come up with something quickly.

Over 1NT (2NT) showing minors, you want to play 3!M as signoff and also want to be able to show invitational and forcing hands in both majors. Suppose you play 3=hearts (inv+) and 3=spades (inv+). Now when partner bids a slow 3 and you were always planning to bid game with your marginal hand, you have a problem. On the other hand, if you play 3= or , invitational and 3= or , GF, your followups will always be clear even when partner breaks tempo.

I've seen this principle used more frequently to have one call showing weak (in context) and strong hands and another showing intermediate.
June 14
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Not to mention, if North has a doubleton club to go with his spade void, he would have bid something other than 1.
June 14
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