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Bridge Winners Profile for John D'Errico

John D'Errico
John D'Errico
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Basic Information

Member Since
June 19, 2010
Last Seen
5 hours ago
Member Type
Bridge Writer
about me

Semi-retired mathematician (numerical analysis, applied math, linear algebra, statistics, etc.) I like woodworking, especially wood turning. I enjoy writing up bridge hands, which I find can improve my own play, by forcing me to think about what is happening at the table.

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Dick Wilson's bidding problem: A7 KJ532 Q7 QT83
If you pass, suppose North passes the double of 2♠. Now East must surely bid, but East now has options, in showing where their strength lies with a maximum hand if they can bid below 3♡. So I might argue that 3♡ is weaker than pass here. It tells partner ...
Carding with doubleton
I'm still working on whether to show current or original count on the second round...
Accusation of Plagiarism against Mark Horton
So, would you tell your kids it is ok to only plagiarize someone else's work, as long as they only lift part of it, perhaps the less interesting part? Teach them it is ok to copy the work of others as their own, even in part, and tomorrow they ...
Double dummy defense
Ross Amann has pointed out that I missed one point, that at trick 3, I can afford to rise with the club jack. This avoids the need for North to hold the club 10. With care in the play to ensure a heart ruff, the same defensive lines will still ...
Would you roll this back?
North played the contract, not South. Along the way, North took a diamond finesse to the queen. Seeing the jack told him to then hook the 10. At least that is what I think happened. There was some confusion due to the director call.
Would you roll this back?
North did say 5-7, out loud. With no question asked. I should have made that more clear. No questions were asked by the defense in the bidding at all, until dummy came down, when the director was called because it seemed there was UI involved. They did ask the meaning ...
Would you roll this back?
No screens.
Would you roll this back?
Double was explained immediately as 5-7, with no question made.
Would you roll this back?
South apparently did not know what Double showed. But he also did not know what to do immediately, so he decided that X would get things started.
Would you roll this back?
The alert was made, then without a direct question, was explained immediately as 5-7. So the explanation was offered without a question made.

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