Join Bridge Winners
All comments by Matthias Felmy
1 2
You are ignoring the author of this comment. Click to temporarily show the comment.
At the table, the player bid 5S down 1, 5D would have been likely down 2. Partner had Jx AJxx QJxx QJx. The 3d bidder x Kxxx AKTxx Txx (?!). I still think this was an easy 4S the round before and that now passing could be wrong, but it is still obviously best in the long run.
Jan. 15
You are ignoring the author of this comment. Click to temporarily show the comment.
If South denied three or more hearts, North could give a suit-preference signal for and against clubs with a clear conscience.
Aug. 23, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
It is hard (or at least time-consuming) to calculate all the probabilities, but to me it looks best to play A and a spade. Later lead Q from dummy. If West has the K, I am in pretty good shape although he would have led a diamond from a five-card suit (and four spades). If East has the K I am not down yet.

The better the opponents the better this line is.
May 12, 2019
Matthias Felmy edited this comment May 12, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
MyBridge Trainer
- software (Windows)
- like BridgeMaster but for defensive problems
- beginner to intermediate
- currently only in German

www.mybridge.shop
June 14, 2018
You are ignoring the author of this comment. Click to temporarily show the comment.
thanks :)
May 30, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
His exceptions are situations in which he does not play Rusinov against suit contracts.
Not much too add, for those of you who prefer reading German, I wrote an article about Rusinov here:
https://www.mybridge.shop/bridge-gegenspiel/ausspielkonventionen/rusinov/
May 30, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
I wrote a blog post (in German) about the Doctors.

https://www.mybridge.shop/bridge-wladow-elinescu/
May 24, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
1. in general, yes (as long as the event organiser has monopoly power in his region), DBV yes, a local club no
2. yes, if they are eligible to play (they lost the ruling against the WBF)
The selection criteria include good/ethical behaviour as a criterion though.

3. This is currently being discussed…
April 27, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
Hi Jeff,
thanks for being in the well.

How are your system notes organized?
For example:
1) Is it modular or one big file?
2) Is Eric solely responsible for writing the notes (or can you make changes in the notes as well)?
3) Do you use one column or two columns?
4) Do you have many general rules or do you try to list all sequences?
5) Do you include many example hands?
6) Do you work with colours?
7) Where do you put recent system changes?

Thanks!
March 29, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
Not sure if this (what Rosalind said) is true in Swiss law (in German law, which is similar to Swiss law, it is not so easy, I believe).

But ne bis in idem certainly does not apply to cheating in tournaments other than the 2014 European Championships in Opatija, e. g. cheating in the Polish Premier League could be prosecuted.
March 10, 2017
You are ignoring the author of this comment. Click to temporarily show the comment.
thanks for posting this, interesting discussion and congratulations for winning the championship!
Nov. 1, 2016
You are ignoring the author of this comment. Click to temporarily show the comment.
Reduced sentences don't make much sense given the way Boye proceeded.

Boye talked to Alex Smirnov after he had cracked the code. So most of the work was already done or could have been crowd-sourced at that point.

Admitting guilty did not save “that” much time and it was by no-means pressure-free.

If a non-suspected cheating pair comes forward, we can talk about a much lighter sentence, like two to eight years, depending on circumstances.

The most important dis-incentive is the fear of getting caught, not the severity of the punishment.

But: The shorter a pair is banned the more likely is a pair to cheat. This is not a linear relationship. For most pairs being seen as cheats is like a death-sentence but (I believe) for those who think otherwise it matters whether you were banned for 2 years or for 5 years (and it would not matter as much if you were banned for 30 or for 33 years).

Furthermore, it is established that cheats will cheat again with a high probability.

So, if most of the work is already done and the confession is forced due to a cracked code, a much reduced sentence does not make much sense from an economic (save costs) or game-theoretic (give incentives to come clean) point of view.

I understand that Boye et al did a great job and spent countless hours - I am very thankful for that; and they wanted to spend to more time on pairs 4 & 5 (before the BB). Furthermore, we cannot expect that Boye will be the sheriff forever.

We need some transparency on the investigations and avoid any blackmailings (or suspicion of blackmailing). I want to make clear that I don't suspect anyone of blackmailing here, but this could happen in the future.

So perhaps we need a formal institution that observes pairs (probably people should be paid) and if it has a reasonable suspicion, it needs to be able to crowd-source the investigation without having to fear a law-suit from suspected pairs. So, it must be able to “openly” say they suspect a pair of cheating if reasonable suspicion is given.

Such an instituion would be powerful enough to disincentivise cheating (because of the fear of getting caught).
Oct. 18, 2015
Matthias Felmy edited this comment Oct. 18, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
Can't you just put a user on the ignore list of all other community members instead of banning him?
Oct. 17, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
Michael,

I talked to him today and you are right.
Oct. 14, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
You are ignoring the author of this comment. Click to temporarily show the comment.
Lasker won the German Open Pairs in 1932.

There is at least one German National Champion (Bridge) who is/was a top European Go player, but I don't think I should mention his name on the internet :).
Oct. 13, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
Two years ago, the score in the D'Orsi trophy and the VC was very close going into the last set while the BB final was decided (100 IMPs difference with 16 boards to go and a low scoring last set), but the BB final with F-N still had 4000 spectators iirc.
Oct. 7, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
get rid of overtricks?
Oct. 7, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
1) I think one major flaw in Jassem's approach is that the hands he compares the actual hand to are too similar to the orginal hand.

This leads to a few problems:
This artificially puts each hand more in the middle as you can always find an additional 9 or 10 to find an even better hand. And if you want to, you can easily find three weaker hands so that your hands get a +1 score or two hands so that your hands gets a 0. I really think you need to chunk hand types together, as an expert would at the table.

To find the truth, you have to find out how the bidder perceives his own range.

a) Jassem's approach probably works on the hand where Bal showed 7/8 HCP.
But not when the perceived range is too wide to increment the hand strength with one point.

b) I somehow doubt an expert thinks along the following Line “I have a Qxx QJT98xxx T Tx 3 -opener (white/white)thinks - well I could have an additional J or the K instead of the queen, that's why my hand is in the middle.”
Most experts I know think in terms of tricks here as the range is somehow wide.
In my world I try to have 5.5 to 6.5 tricks for a 3-opening so this hand is a dead minimum.

Even if you don't agree with my range, but agree with the general conception of having a trick range, then you need to find hands that have the minimum number of tricks, hands with an average and hands with a maximum number of tricks.
Adding one point here and there is too close and does not reflect the trick count-evaluation approach.

c) Look at board 31.
I don't know what double shows. But if it is an optional double (and if you can double with a penalty double as well) - the range of having exactly A87x is way too small, why can't he have much better spades? or much more defense outside (like sure tricks or shortness in partner's suit).

Conclusion: Adding one point here and there leads to hands which are too similar and the range is way to close.
If you want to do this analysis with more hands, you need to find min/max hands which reflect the bidding and which are not constructed out of the actual hand.

2)
0.33 as a correlation coefficient is usually regarded as a (weak) sign of positive correlation (iirc but Google seems to confirm this). It is certainly no sign for “very weak correlation” (which many people probably wrongly read as “no correlation”).
The sample size is too small anyway.
Oct. 5, 2015
Matthias Felmy edited this comment Oct. 5, 2015
You are ignoring the author of this comment. Click to temporarily show the comment.
Polish Premier League Semifinal 2/6 minute 14:30 (edit: perhaps) Balicki showed some spade length, length was not clear (had T87xx Jxx 8xxx x)
https://www.youtube.com/watch?v=3YiQbb9iDE0&t=14m26s
(1) p (1) p
(1) X (p) 1
(double) p (2) 3
(3NT) p (4) all pass

edit: Zmud led indeed a diamond, not spades
edit: I think it is important to look at all instances where he used the gesture;
perhaps he does not show the length in the suit led; perhaps he shows length in his longest suit;
perhaps this is no signal at all
Oct. 4, 2015
Matthias Felmy edited this comment Oct. 4, 2015
1 2
.

Bottom Home Top