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All comments by Richard Granville
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So do I in principle, but the Kx, no wasted club values and hand shape mean that a negative double is fully justified.
8 hours ago
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I expect that 1 would have denied 4 spades. This is a popular treatment with some strong London-based players.
Oct. 2
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Not so brilliant: setting up South's K allows a spade discard from dummy.
Sept. 6
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I play exactly as described by Monty Page above. The main advantage is that responder doesn't have to go via Stayman when he has no interest in a major suit. Many top UK players have abandoned non-promissory Stayman.
Aug. 27
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Gazzilli works best after a 1 opening in conjunction with the Kaplan Interchange. I've successfully incorporated this approach into the MOSSO system.
Aug. 15
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No, an Acol 3NT shows a solid minor with no outside ace or king.
Aug. 14
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What do you rebid when you're minimum with long clubs?
Aug. 14
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With a regular partner I might open 1, although I wouldn't rebid either 3 or 3NT after a 1 or 1 response. With an unfamiliar partner there's much to be said for 2-2-2NT.
Aug. 14
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Traditionally (i.e. before the advent of WJS) this jump to 3 was generally played as invitational. But if 1-2 is weak then 1-1-2-2 is highly constructive, in which case the jump to 3 is GF. Of course so is 1-1-2-3-3R-3, so the former sequence should show a better suit than the latter.
Aug. 14
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Pass. Too much danger of conceding 200. I would probably open 1 if non-vulnerable.
July 27
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I like David Gold's approach so much that (with his permission) I incorporated it into the book on the MOSSO bidding system. As well as being a great improvement on “systems on” after (2M) 2NT or (2M) P P 2NT, the method also works well after the MOSSO sequences 1 (2M) P P 2NT and 1 P 1 (2M) 2N. Do any Precision or Polish Club partnerships do the same?
June 30
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Neither would I.
June 4
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With a strong 6-4 minor suit hand he can start with a forcing 2 and see what develops.
June 4
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Where are your winners?
June 4
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With all of my 2/1 (and MOSSO) partners 3NT over 3 would be non-serious, so 4 is a serious slam try. Over this opener absolutely must show a diamond control if he has one. Responder can always bid 4 over 4 if his ambitions are limited.
May 15
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I'm surprised by the strong support for 3. Shouldn't this suggest something like xx AQTxx Kxx xxx ?
May 13
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I remember the problem well.
May 12
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Good luck!
May 10
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I agree with you on both counts.

To a first level of approximation, ACBL Basic chart corresponds to EBU level 2 and ACBL Basic+ chart corresponds to the superseded EBU level 3 (although this might still be used in some clubs).

MOSSO isn't compliant with the old EBU level 3 and is nowhere near compliant with EBU level 2.

I have no objection to this: inexperienced players shouldn't be forced to play against bidding systems such as MOSSO. For me it's sufficient that MOSSO is allowed in “most” events.
May 9
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At present (as far as I can gather) a MOSSO 1 opening in ACBL land shouldn't be announced, but it should be alerted and also pre-alerted. With most 9 point hands being eligible for a 1 opening it's regarded (in the alert chart) as a “very light opening”.

This approach seems to be rather inconsistent with the new convention charts, but is presumably explained by the fact that only those were updated last year. Do the ACBL plan to update the alert charts this year?

I'm not planning to post a new summary of MOSSO on BW because my 2016 summary https://bridgewinners.com/article/view/introduction-to-mosso-mosca-with-standard-spade-openings/ is still largely valid. I have, however, identified six minor changes that relate to this cut-down version of the system (Meno MOSSO):

(1) A 1 opening is now 9-16, rather than 10-16.

(2) The 2m responses to 1 are now regarded as 12+ (although responder with a poor 12 points might still decide not to force to game).

(3) The 3m (and 3M) responses to 1 now show specific hands with a 7+ card suit.

(4) 1-1-2 is available for some hands with 6+ spades.

(5) 1-1NT-2 is now GF without 5 spades. Responder treats the 2 rebid as invitational.

(6) 1-1-2 is now used as a distributional GF (7+ hearts or an outside 5+ card suit), with 1-1-2NT denying such hands.

The standard version of MOSSO defines many more later bids and the expanded version (piu MOSSO) includes some further treatments that could be adopted by regular partnerships.
May 8
Richard Granville edited this comment May 8
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