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Revoke

#1 User is offline   Chris3875 

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Posted 2011-November-02, 04:57



Clubs are trumps - East has no cards worth considering

The lead is in West and the 5C is led, taken by the 9C, and the 5S thrown off from South.
4H played to the QC, 7C from West.
4C from South, TC and KC.

Director rules on the revoke and transfers one trick to E/W

Declarer, South, argues that there is no way a trick could have been lost - that on the lead of 5C, 9C by North, 4C by South
5S by South, 7C from West, KC North.
4H from North, QC from South, TC from West.

I said the Law is the Law but Declarer has challenged me to put this scenario on the website to get the opinion of Directors in US in particular (over to you Ed)where Declarer asserts he would never have a trick taken off him in this situation.
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#2 User is offline   Vampyr 

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Posted 2011-November-02, 05:27

View PostChris3875, on 2011-November-02, 04:57, said:

Declarer asserts he would never have a trick taken off him in this situation.


Perhaps it would be best to explain to declarer that he didn't "lose" a trick; he had a winning trick transferred to satisfy the revoke penalty.
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#3 User is offline   billw55 

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Posted 2011-November-02, 08:32

View PostChris3875, on 2011-November-02, 04:57, said:

Declarer, South, argues that there is no way a trick could have been lost

Perhaps he should have claimed.
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#4 User is offline   iviehoff 

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Posted 2011-November-02, 08:57

View PostChris3875, on 2011-November-02, 04:57, said:

Director rules on the revoke and transfers one trick to E/W
Declarer, South, argues that there is no way a trick could have been lost
I said the Law is the Law but Declarer has challenged me...

As reported by Zia Mahmood in the Guardian a couple of weeks ago, a player had a possibly unique opportunity to bid and make a grand slam while off the Ace of trumps, because a defender revoked before his side took their Ace (memo to self, commit revokes only after taking your winners). Unfortunately declarer misplayed it, and emerged with only 11 natural tricks rather than 12, so, with the revoke penalty trick, he was still 1 off.

L 64 is clear. The ruling on a revoke is on the basis of equity (1) if it is a revoke the law says is not subject to automatic penalty at Law 64B or (2) if the non-offending side is not adequately compensated by the penalty tricks (L64C). In such a case, what might have happened absent the revoke is relevant.

But for revokes subject to automatic penalty (L64A), these automatic penalties apply regardless of what might otherwise have happened absent the revoke. Thus, you can make a grand slam off the Ace of trumps, if the defenders revoke.

It does not matter whether this is under ACBL or any other administration, there is no difference on this between administrations. The law here is quite clear.
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#5 User is offline   wyman 

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Posted 2011-November-02, 09:08

Isn't the right ruling 2 tricks to EW?

A. Penalty Assessed When a revoke is established:

1. Offending Player Won Revoke Trick
and the trick on which the revoke occurred was won by the offending player, (penalty) after play ceases, the trick on which the revoke occurred, plus one of any subsequent tricks won by the offending side, are transferred to the non-offending side.

(my emphasis)

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#6 User is offline   RMB1 

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Posted 2011-November-02, 09:12

View Postwyman, on 2011-November-02, 09:08, said:

Isn't the right ruling 2 tricks to EW?

A. Penalty Assessed
When a revoke is established:
1. Offending Player Won Revoke Trick
and the trick on which the revoke occurred was won by the offending player
[/b]


This does not apply if dummy wins the trick and declarer revokes from his hand.
Robin

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#7 User is offline   gordontd 

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Posted 2011-November-02, 09:13

The revoke trick wasn't won by the offending player.
Gordon Rainsford
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#8 User is offline   wyman 

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Posted 2011-November-02, 09:14

View PostRMB1, on 2011-November-02, 09:12, said:

This does not apply if dummy wins the trick and declarer revokes from his hand.


I was afraid someone might suggest that. We should look, then, at 64A2 (though I feel as though, for the purposes of these laws, declarer should be both the offending player and the one to win the trick):

2. Offending Player Did Not Win Revoke Trick
and the trick on which the revoke occurred was not won by the offending player, then, if the offending side won that or any subsequent trick, (penalty) after play ceases, one trick is transferred to the non-offending side; also, if an additional trick was subsequently won by the offending player with a card that he could legally have played to the revoke trick, one such trick is transferred to the non-offending side.

Clear, I think, no matter how you slice it. 2 tricks to EW.
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#9 User is offline   RMB1 

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Posted 2011-November-02, 09:29

View Postwyman, on 2011-November-02, 09:14, said:

I was afraid someone might suggest that. We should look, then, at 64A2 ...

There is a footnote to Law 64A2: "A trick won in dummy is not won by declarer for the purposes of this Law".
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#10 User is offline   iviehoff 

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Posted 2011-November-02, 09:31

View Postwyman, on 2011-November-02, 09:14, said:

I was afraid someone might suggest that. We should look, then, at 64A2

Unfortunately you quote from an outdated set of laws. Under the 2007 laws, L64 A now says

When a revoke is established:
1. and the trick on which the revoke occurred was won by the offending
player19, at the end of the play the trick on which the revoke occurred
is transferred to the non-offending side together with one of any
subsequent tricks won by the offending side.
2. and the trick on which the revoke occurred was not won by the
offending player19 then, if the offending side won that or any subsequent
trick, after play ends one trick is transferred to the non-offending side.

19 A trick won in dummy is not won by declarer for the purposes of this Law.
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#11 User is offline   wyman 

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Posted 2011-November-02, 09:40

Amazing, as I've quoted from the laws posted on the ACBL website. [cf. http://web2.acbl.org/laws/play.htm]

I see that you are correct, looking at the article from the BB about revisions to the laws, but it's annoying that the ACBL is still hosting outdated information.

Thanks for the heads-up.
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#12 User is offline   bluejak 

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Posted 2011-November-02, 10:38

View PostChris3875, on 2011-November-02, 04:57, said:

I said the Law is the Law but Declarer has challenged me to put this scenario on the website to get the opinion of Directors in US in particular (over to you Ed)where Declarer asserts he would never have a trick taken off him in this situation.

I am curious: did you show the player the Law in the Law book? I would have.

View Postiviehoff, on 2011-November-02, 08:57, said:

As reported by Zia Mahmood in the Guardian a couple of weeks ago, a player had a possibly unique opportunity to bid and make a grand slam while off the Ace of trumps, because a defender revoked before his side took their Ace (memo to self, commit revokes only after taking your winners). Unfortunately declarer misplayed it, and emerged with only 11 natural tricks rather than 12, so, with the revoke penalty trick, he was still 1 off.

Pfui! That's nothing. :(

About forty years ago a player in London was in a rather poor grand slam: he could see nine tricks! :huh:

Anyway he played the hand out without worrying overmuch. At one point his RHO ruffed and he overruffed.

Now, RHO had revoked: so if he does not overruff the following occurs:

  • He pitches one of his four losers
  • He gets two tricks for the revoke since RHO wins the trick with the revoke card
  • RHO is endplayed to give him a trick

He thus missed the chance to be the first player to make a grand slam on an endplay. If I had been him I would have shot myself or taken up a different mindsport. :)
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#13 User is offline   iviehoff 

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Posted 2011-November-02, 10:48

View Postbluejak, on 2011-November-02, 10:38, said:

He thus missed the chance to be the first player to make a grand slam on an endplay.

That was actually the hand Zia reported, but such is my memory these days...
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#14 User is offline   BunnyGo 

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Posted 2011-November-02, 11:14

View Postbluejak, on 2011-November-02, 10:38, said:

He thus missed the chance to be the first player to make a grand slam on an endplay. If I had been him I would have shot myself or taken up a different mindsport. :)


Wow, that's great. It's even better than the (apocryphal? fictional? I dunno) hand where a pair made 7 off the ace of trump. They made on a cross ruff and when the person holding the ace also had 14 cards and the perfect distribution so that they could never ruff in, the slam was made.
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#15 User is online   mycroft 

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Posted 2011-November-02, 12:05

Player has claim rules and revoke rules mixed up (as everyone's saying). Suggest to him that he's lucky he pulled this one off in the last three years, because before Sept 2008, it would have been 2 tricks (as Wyman is showing)!

I have explained to some people in the past that while we are moving more toward equity in assigning rectifications, there are still some cases where there is an explicit "we'd rather you don't do this, so we're going to penalise you, maybe you'll pay attention next time" component, and revokes is one of them (and it is only when equity *to the NOS* isn't served that we do anything else).
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#16 User is offline   barmar 

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Posted 2011-November-02, 13:37

View Postwyman, on 2011-November-02, 09:40, said:

Amazing, as I've quoted from the laws posted on the ACBL website. [cf. http://web2.acbl.org/laws/play.htm]

That's apparently an old link you have in your bookmarks. If you start from the ACBL home page, and click on "Charts, Rules, and Regulation", then "Laws of Duplicate Bridge", the URL is

http://www.acbl.org/...cate-Bridge.pdf

and it's the current version.

#17 User is offline   wyman 

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Posted 2011-November-02, 13:41

View Postbarmar, on 2011-November-02, 13:37, said:

That's apparently an old link you have in your bookmarks. If you start from the ACBL home page, and click on "Charts, Rules, and Regulation", then "Laws of Duplicate Bridge", the URL is

http://www.acbl.org/...cate-Bridge.pdf

and it's the current version.


Yes, but if you google "laws of contract bridge," the 3rd result (and first non-pdf) is on the ACBL's website as linked above. I'm just saying probably they should update that page with a warning, update it with the correct laws, or take it down. [imho]
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#18 User is offline   barmar 

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Posted 2011-November-02, 13:43

Why don't you send them an email. They probably just forgot about the old page.

I do wish someone would convert the new Laws to HTML format, like the old ones. Having to scroll through a huge PDF file is a royal pain.

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Posted 2011-November-02, 15:28

View PostBunnyGo, on 2011-November-02, 11:14, said:

Wow, that's great. It's even better than the (apocryphal? fictional? I dunno) hand where a pair made 7 off the ace of trump. They made on a cross ruff and when the person holding the ace also had 14 cards and the perfect distribution so that they could never ruff in, the slam was made.

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#20 User is offline   blackshoe 

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Posted 2011-November-02, 15:31

One of the cool things about the Portable Document Format (PDF) is that you can actually have links inside your document, if you do it right. The ACBL version ought, IMO to have links from the table of contents to the body of the law, and also from the index, and even where one law references another. But whoever built the damn thing got lazy, or didn't know he could do that. :(

To summarize, Chris, Declarer revoked (Law 61A) on trick 11, when he discarded the 5. The revoke became established when declarer led dummy's 4 (Law 63A1). Declarer Dummy won the revoke trick, Declarer the next trick, and dummy the last trick. Therefore, 2 1 tricks are is transferred to the NOS (Law 64A1 2). Since if there had been no revoke, the defense would have won only one of these three tricks, Law 64C does not apply.

David is right that reading the laws to the table might have scotched the debate, although in this part of North America, even attempting to do so is likely to result in vociferous complaints from the players, along the lines of "we don't have time for that!" :(

This post has been edited by blackshoe: 2011-November-02, 16:13
Reason for edit: fixed my error as to who won the revoke trick

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