Bridge Winners Profile for Mattias Andersson

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Feedback for Convention Chart, Part 2: Length is not defined. I'm not sure if it matters, but a hand that is of average strength is also of near average strength, and so on. Should 3. “Quasi-Natural”: A minor suit bid that is either natural or shows a pattern that would qualify for a natural NT ...
Feedback for Convention Chart, Part 2: If this is not clarified, 11 seems to disallow the common 2D multi variation which shows either a weak 2 in hearts, a weak 2 in spades, or a strong balanced hand, since it is an opening preempt that does not show at least one known suit and may have ...
Feedback for Convention Chart: What does showing a suit mean? What does showing length in a suit mean? This should be defined and made consistent. What does "shows a pattern that would qualify for a natural NT opening" mean in the definition of quasi-natural? Are there any requirements on potential singletons? Is there a ...
Using 1D as artificial after (1C)--X--(P)--??: After a 1 one of a suit/2♣/3♣ opening by the opponents followed by a double by us, we play the first step as either negative or GF, or a balanced with doubt about playing in NT. I would say it's even more useful over the ...