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All comments by David Levin
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It appears that all of the above have been fixed.
19 hours ago
David Levin edited this comment 19 hours ago
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That depends on how one defines “the game” and on whether one thinks it's still being offered by the ACBL.
23 hours ago
David Levin edited this comment 23 hours ago
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The word “dicard” is pronounced “dee CARD”.
Jan. 20
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"Playing ace queen and a club" on page 7.
Jan. 20
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Would organizing (say) private two-table team games be feasible?
Jan. 18
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“In the state of Arizona, it is illegal for a donkey to sleep in a bathtub. I don't know if the donkey or the owner is punished.”

Is the bathtub to go without stain?
Jan. 17
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The 2008 edition of Law 12C1(b) reads, "If, subsequent to the irregularity, the nonoffending side has contributed to its own damage by a serious error (unrelated to the infraction) or by a wild or [Italics added.] gambling action [SEWOG], it does not receive relief in the adjustment for such part of the damage as is self-inflicted. The offending side should be awarded the score that it would have been allotted as the consequence of its infraction only."
Jan. 17
David Levin edited this comment Jan. 17
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I'm convinced. I was fixated on the defenders' having been dealt five spades, leading me to overlook that starting with the A ultimately eliminates a guess in trumps.
Jan. 17
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I agree that the K will likely be ducked if East holds the ace, being that West's signal could be factored in (although at least the “get information” part of my intent would be met). But if West held say, Axxx (in addition to the K and J suggested by Trick 1), ducking seems less clear because East's failure to intervene over 2 should not deny six mediocre hearts.

Even in cases where West would find the duck when holding the A, I'm not sure that Declarer will be worse off than if hearts weren't led until later.
Jan. 16
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I'm leading the K at Trick 2, to build an entry and get information. A defender takes the ace (likely West from the failure to lead a heart, but it probably doesn't matter) and continues clubs. I win in Dummy and run three diamonds (assuming 3-2, which seems likely from what's transpired) to discard my remaining club. Somebody ruffs and exits in a round suit, and how I attempt to play trumps for one loser will depend on who ruffed the diamond and with what card.
Jan. 16
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If we credit West with Ax to go with A-fifth or -sixth, West's also holding the K would seem inconsistent with opening 2. So, although I agree that failing to capture the K would be remarkable, rising wouldn't set the contract by force.
Jan. 15
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I am proposing a many-suit-layouts-possible catalog, which seems a far cry from an all-hands-possible catalog.

Added: The last few pages of the article discuss how the catalog might summarize the prospects and risks offered by a single-dummy card-combination, information that human players routinely use. Robot would probe the depths of possibilities only when it seems necessary. I plan to define “only when it seems necessary” in future.
Jan. 15
David Levin edited this comment Jan. 15
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I understand why “rewarding,” but why “frustrating”?
Jan. 15
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“(Deleted — it was probably dumb)”

But would the time until others realized it have exceeded the Andy threshold of 59 minutes?
Jan. 15
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Nontransitive relationships can occur in chess also, as in Q&N > Q&B > R&B&B > Q&N.
Jan. 15
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It's toggled by the icon that has “ABC” overlapping a check mark.
Jan. 15
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Having thought of a construction before seeing Stephen's reply, I figured I'd post it.

Dummy: xxx=KT6x=Ax=KQxx
Declarer: xx=A95xx=KQxx=Ax

Declarer had opened 1, LHO had overcalled 1, and the final contract became either 4 or 5.

The defense starts by cashing two spades and leading a third round, ruffed by Declarer. In 5, Declarer can't afford a safety play in trumps and therefore must start with the ace or king. But in 4, Declarer can afford to lead a trump toward the ten, which succeeds so long as RHO can't win and give Partner a ruff. But on this deal, RHO started with Hx and a seven-card minor.

(Last paragraph, second sentence edited.)
Jan. 14
David Levin edited this comment Jan. 14
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To make your email address less prone to being “harvested” from your comment, you might edit it to replace “@” with “ at ”.
Jan. 14
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Using a browser's “Find,” I got different results: one article matching “game try” and six articles matching “negative double”. (I'm not disputing that it would be handy to be able to search for keywords that appear in an article's text even if they're not in the title.)
Jan. 14
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Although the heart shift in that sequence seems most accurate and would effect a two-trick set, continuing spades without the heart shift seems to just beat 3N, provided that South withholds the 10 until the fourth round of the suit.
Jan. 13
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