ochinko, on Sep 2 2005, 09:21 PM, said:
1m - 1M
?
2M - 7 LTC
3M - 6
4M - 5
Last one assumes I have no suit to splinter in. That I would prefer to the direct jump.
I don't doubt that the above ("Method A") is classical "by the book", but I wonder if it is better than or worse than the following suggestion:
"Method B"
2M - more than 5 LTC
3M - 5 LTC
Higher - fewer than 5 LTC
My analysis follows:
The 2M raise leaves room to enquire further and therefore has room for a range of LTC of up to 2. Even if you ignore the multiple alternative routes to 3M thereafter and only ever raised 2M to 3M as a game try (indicating 8 LTC), that bid could require partner to bid game with 6 LTC otherwise pass (in Method B). In method A the use of the game try after 2M raise appears somewhat redundant as the 2M bid is very narrowly defined.
On the face of it, if we were to assume (falsely) that LTC were 100% accurate, the occasions when these too methods give rise to a swing are:
Situation 1: when opener has more than 7 losers and responder has 8 losers.
Situation 2: when responder has more than 9 losers and opener has 6 losers.
In situation 1, using Method A you stop in 2M when Method B gets you overboard in 3M.
In situation 2, using Method B you stop in 2M when the Method A gets you overboard in 3M.
Which is more likely? A minimum balanced 1/1 change of suit can easily contain 10 losers. A "weak 1N" opener that has to open 1m because you are playing a strong 1N can easily be 8 losers. Jury is out on that one as far as I am concerned. However by preference I play a weak 1N opener, so 1m opener is much less likely to have more than 7 losers. However the frequency of a 10 loser 1-level response is not affected by the choice of 1N opener, so its relative frequency compared with an 8 loser opener is rather higher in my methods, in which case I reckon that situation 2 is clearly more likely in that system, suggesting that Method B (in that case) is superior.
Perhaps it is also worthwhile considering which method gains when you are in the slam zone. Method B seems to preserve more bidding space.
Just some thoughts, anyway.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.
Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. m

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r-m

nd

ing) tr. v. - Any bid made by bridge player with which partner disagrees.
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