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All comments by Ian Grant
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The conversion is required for feeding into the NGS and as a way to calculate victory points for swiss events.
July 14
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Yes.
July 14
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I play the cue bid as totally flexible, expecting partner to rebid their suit with a minimum overcall and to do something sensible otherwise (which could be 2NT).
July 14
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Er yes, that's why I said I got this one wrong.
July 14
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Fair points, I got this one wrong.
July 14
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Because he hasn't underbid already?
July 14
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And why shoud you suffer if your opps do exactly that?


Or you gamble and get it wrong and gift your ops a big gain much to the chagrin of those sat the same direction as them.

Open your eyes, traditional imps is a terrible way to score a pairs event, totally unfair and mathematically unsound.
July 14
Ian Grant edited this comment July 14
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We play 2S in this sequence as highly invitational but nf, so agree that west should raise spades. We wouldn't bid past 3.
July 14
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East has a 9 loser hand, why should he get excited?
July 14
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There is an additional benefit that you can have a single winner movement as there is no double accounting.
July 14
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There was no misinformation and east bid according to agreements. West didn't take advantage of the UI arising from East's explanation.

Why is there any adjustment?
July 14
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Not for me, I can agree spades later if appropriate.
July 14
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Presumably he has also been visiting the loo regularly during matches.
July 14
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I could have bid 2 as West “how good is your overcall p” and then east bids diamonds.
July 14
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Why should you gain from overbidding and then getting a lucky lead?

If the contract is makeable double dummy then you will gain relative to your opps, you score zero they will lose imps.
July 14
Ian Grant edited this comment July 14
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The optimum score is the best both pairs can do, if N/S can only make 1 and E/W can't make anything then the optimum score is 90 since neither side can gain by bidding on.
July 14
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Yes and no. These are rareties, difficult to quantify or prove.

I find it hard to improve on matchpoints for pairs play but many players like imps, so I'm just trying to iron out the major injustices that arise whilst retaiñing the flavour of the competition. I don't believe that there is a perfect solution.
July 14
Ian Grant edited this comment July 14
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What, all of them?
July 14
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Would need to find more efficient way to import the session data, I typed this one. I also did the optimum scores myself via inspection.

I think the DD analysis to obtain the datum is less random than the Butler method. You could ‘zero-max’ with a Butler Datum but will end up with more zeroes as the Butler datum will normally be lower than the optimum score. I would expect the Butler datum to approach the optimum score as the quality of the field improves, this is something I can test using the multi-division IMPs pairs league on BridgeClubLive, but sadly divs 1&2 pkay different hands to the rest. Obviously I would prefer the optimum score to be based on single dummy analysis, I'm not sure this is achievable.

I agree about offense being easier than defence, got roasted today by quality opps who had all the cards. If the opps declare 18 of 27 then that's 18 zeroes using my method, 18 large negatives using the nrmal one. However, using my method get the defence right and you will be rewarded with a zero score, get it wrong and you will lose imps; the difference is that your opps won't benefit from your misdefence or be punished for your brilliance.
July 13
Ian Grant edited this comment July 13
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Example added as page 2
July 13
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