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All comments by Rosalind Hengeveld
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3 as a mixed raise in diamonds is especially useful and frequent. 3 as traditional ‘Inverted’ with about 3–10 HCP is much too wide a range.
21 hours ago
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Easier? Isn't there an ethical issue if, in the above example, advancer bids (1)-1-(pass)-1NT on 7 HCP, where their overcall normally shows about 8–16 HCP?
Sept. 23
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“I really want to play a round where all my opening bids are suction!”

Long ago (when it was still legal) I did play a system called ‘Labda’ with Suction-like opening bids. 1 showed a two-suiter (5-4 either way or 4441) in or , 1 showed or , 1NT showed majors or minors, all 8–12 HCP; pass was any 13+, 1 was any 0–7, 1 was 8–12 balanced, two of a suit was 8–12 five+. Overcalls were ‘normal’.
Sept. 23
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The problem is not just or not so much that you cannot end up in 1NT (same discussion as to what degree a forcing 1NT over 1/ is a ‘problem’). The problem is rather that you will be stuck for a bid when you have no major and are short of the values for 2 or higher.
Sept. 23
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The concept of ‘comparable call’ turns out to be more difficult than anticipated. A representative of our regulating authority raised the question whether, after a 1 opening bid out of turn, a (1)-1 overcall is or is not a comparable call. Many more similar cases are possible.
Sept. 23
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The pair in question plays these ‘Suction’-type overcalls against 1 opening bids of any meaning but Strong Club (what they do play against the latter is unclear). Therefore, whether 1 as of a doubleton – which is very common over here – is ‘natural’ is moot.
Sept. 22
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In their explanation the users state that they may treat 5-4 hands as one-suiters, especially if the five is a major and the four is a minor. Likewise, a 1 overcall, showing spades or minors, may be based on spades plus a (yet unknown) four-card heart suit. Actually, this looks a lot like most people would bid playing regular overcalls.

I am therefore willing to the believe the several contributors who say that the ‘one-suiter option’ is the likelier.
Sept. 22
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Their double of 1 is ‘normal’, 1NT is 15–17 balanced, 2 is weak with either major (much like Multi 2 opener, familiar here), 2/ is weak with five in the suit bid plus a minor (not BSC), 2NT is 5-5 minors or majors 5–9 or 16+.
Sept. 22
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Valuable to know that a ‘Suction’ overcall is most often the single-suit option with in principle just the suit above the one bid.
Sept. 22
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Strictly speaking, the suit bid is never among the suits in the two options overcaller shows they may have. However, in reality they may occasionally have the suit bid (especially if it is a minor, I would presume).

By the same token, the ‘single suit option’ with just the suit above the one bid, may actually contain a second suit – especially a minor – that the bidder decides not to show (says the two-page official explanation). I left some details like this out of my initial explanation in order not to make it too long.
Sept. 22
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Thanks a bunch, especially for tips from experience.

Over here, 1 as of a doubleton in an otherwise natural system counts as ‘natural’ for the purpose of defining BSC and HOM only, not for any and all purposes. For one thing, it is alertable.
Sept. 21
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The official explanation by the users is fairly comprehensive: a full two pages. It can be found here (in Dutch: K = , R = ): https://www.bridge.nl/groepen/Wedstrijdzaken/1718/TD4t78_g7_BSC_Maat-DeMeer_AlgBC.pdf
Sept. 21
Rosalind Hengeveld edited this comment Sept. 21
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I looked it up: ‘Suction versus Suction’ would not count as a BSC, so would be legal.
Sept. 21
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In their approved publication, the users state that the overcalls can be made ‘as of overcall strength’ and ‘the less HCP the more shape’. The overcalls are forcing for one round (and thus presumably have no upper limit).

Advancer's suits bids (including jumps) to these overcalls are all ‘pass or convert’, except a bid in the named suit (the one suit overcaller cannot have) which is natural. 1NT is 12+ HCP.

The meaning of pass after our double is not explained.
Sept. 21
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That alerts should be reserved for artificial bids is not ‘European’, it is the international alert policy of the WBF, which literally states as its rule #1: “Conventional bids should be alerted, non-conventional bids should not.”
Sept. 21
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At imps pairs, you do not want to reach a grand slam with less than some 75% percent chance, as typically small slam already tends to score above average and so on balance you stand to lose. This applies much less in teams, especially against good opponents.
Sept. 20
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Yes, it was sort of ‘Extended STIC’, not necessarily the majors. Though well thought out, I find it overly complicated, given also that STIC does not come up all that often.
Sept. 20
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We do alert Stayman in the Netherlands.
Sept. 20
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My examples were meant to pertain equally to leading or signaling from a non-pristine suit. In other words, if you take the ace from A92, then switch, and later signal count in the suit, it is still the nine rather than the two. Same from (A)972 et cetera.
Sept. 20
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By the way, as an aside: what is definitely better is to put your title in mostly lowercase instead if in all caps.
Sept. 19
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