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All comments by Wouter Fitski
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West knows that east has at best 2 clubs (5D,4S,2H,2C), therefore his Jack wil most likely not be a second stopper. He should have just bid 4H
Nov. 22, 2018
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two -way-checkback after any 1X-1Y-1Z might not be ideal, but is very easy to remember and will rarely ever go wrong.
2clubs is therefore artificial
May 11, 2018
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With this hand you are 100% going to bid slam, the only reason I bid 4H is because I want partner to ask aces (my 5S answer pretty much shows all my points). If its a grand only p can bid this. If he shows out with 4S ill take the initiative and ask aces anyway.
Feb. 15, 2018
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When you dont know what a bid means, it is automatically forcing, rule number 1 in bidding. (dutch translation doubt=forcing)
(2nnd, when in double, dbl is not penalty :)
Feb. 15, 2018
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A 5332 vs 4333 you pretty much always want to play in 3NT, even with a 9crd M fit.
Its therefore prob better to test the 3NT% with 5332.
Feb. 15, 2018
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With that P wil either pass the invite or bid 3NT which p will pass. Even with a 9crd hearth fit 3NT is decent (without a diamond lead prob makes).
Feb. 15, 2018
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West should probably have bid 3 as a weak jump straight away but an overcall and rebid of 3 is still okay given the well placed king of . East dbl is insane, on what grounds does 3 go down? he has 1 defensive spade trick and thats it, does he really expect p to bring the other 4 tricks?
Feb. 5, 2018
ATB
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3 basically garantees a bad score if p has 4 , east should either pass which is speculative but if -1 will yield a great reward or bid 2, if p is weak then he will surely have 2 spades.
Jan. 26, 2018
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3 doesnt show more hcp than 2 would, it simply shows more spades, 6 at the very least without much support in the other suits. your bidding has been fine.
Jan. 23, 2018
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Seems like West got cold feet after his dubious take-out double. 3 seems forcing to me.

For west: just bid 2NT directly, or dont dbl at all. Pass 100% denies a hearth stopper in my book (similar hand but switch K with a club).

For east: why rdbl? partner doesnt seem to have a heart stopper and 3 should be forcing now. To me rdl implies half a heart stopper, asking p to bid 2NT with something like Qx.
Jan. 5, 2018
Wouter Fitski edited this comment Jan. 6, 2018
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Depends a lot on agreements imo
- 3 seems like general values/natural trying to go for 3NT, which makes it hard setting clubs as trumps.
- Would a direct 4 by north over 3 be forcing or not? If forcing then that would make the bidding far more easy.

If 3 was 100% a cue for clubs then 4 must also be a cue for clubs.
If 3 didnt set clubs then 4 is the only way north can actually show SI in clubs (there is no agreement on trumps yet) so it wouldnt even promise a diamond control(although very likely he does)
Jan. 5, 2018
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Is this a forcing pass situation? Although questionable I think it is. P could have therefore passed and pulled out of your double to invite for slam. He didnt so pass seems the right call
Dec. 13, 2017
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I call BS on this one, your p mention is not only extremely results oriented (see majors reversed) but prob wrong in the long run. It is generally unwise to not mention a fit directly when the auction turns competitive. You have no idea whether or not you are able to tell p the next bidding round.

Take this auction for example
1 - 2NT - 3 - 5
p - p - ??
If agreed you could have bid 3 (fit showing invite+), which gives p the oppurtunity to bid 3 if he has those as well.
Dec. 12, 2017
Wouter Fitski edited this comment Dec. 13, 2017
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West could have bid 5NT to ask p for both his suits, 6 must therefore show real clubs. (That doesn't mean east will always pass though.)
Dec. 8, 2017
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As does, BTW, your insult to computer bridge programmers.
- in no way do I mean that computer bridge programmers are bad at their job, on the contrary. I do think its a simple fact that programmers employed by google (or apple etc) are far better at it, hence their employment in the first place.

- Computers have been superb go at chess and GO for decades.
https://en.wikipedia.org/wiki/Computer_Go
yes I know its Wikipedia but check the references. Good AI for Go has only been around sinds about 10years, and untill 2015 AI has only achieved about 1dan, which is equivalent to a martial arts black belt, very high amateur level but nothing more.

- it can solve every difficult problem in the world
No it wont solve every problem and I never said this, not even close since it based around incomplete information. What im trying to say is that over the long run AI will make the right decision more often that human will. That doesnt mean 100%. In brige term it would mean this: playing a few games a comp can easily lose to a human since chance plays a large factor, playing a 1000games and the comp will pretty much always come on top. This is exactly how the comp beat poker pro's at no-limit holdem, in no way did it win every single hand, but after 100.000 it came very clearly on top.

Also id like to clarify I absolutely agree that programming bridge AI is far harder than programming one for chess. I merely mean that right now for bridge it would be naive to think that the technology isnt there yet.
Dec. 7, 2017
Wouter Fitski edited this comment Dec. 7, 2017
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If p passes im def happy, but in my partnerships dbl is not 100% penalty. Anyway, dbl stands
Dec. 7, 2017
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I like dbl and converting 2 to 2. Partner should be able to deduct that we have both majors with longer hearths. 2 cant possibly be strong since we passed initially.
Dec. 7, 2017
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Then why are they so pathetically bad today?
- Very simple, money and time. The Comp that played Go and chess was made by programmers from google, some of the smartest people in the world with an infinite budget and more than enough time. The people who so far made bridge computers are mostly amateurs or low-level programmers (sorry if that offended someone).
Dec. 7, 2017
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http://www.sciencemag.org/news/2017/03/artificial-intelligence-goes-deep-beat-humans-poker

Some months ago, im not entirely sure, AI beat some of the four best NL holdem poker players heads-up. Poker tends to be very similar compared to bridge, being that the player makes decisions based on incomplete information (educated guesses).
Although far harder to program such a computer compared to games based on complete information (chess), i think its pretty naive to think it not yet possible for a AI to beat humans at bridge.
The main reason this hasnt happened yet is simply because of money, bridge has a smaller (mainstream)audience compared to poker and therefore provides much less newscoverage.

PS: for those of you who dont know anything about go, go is a game with complete information, but the amount of combinations are basically infinite. It would takes ages for even the best current computers to simulate every move. The AI who beat the current human champion therefore used a algorithm very similar to the one used for poker (and bridge if that was the case).
Dec. 7, 2017
Wouter Fitski edited this comment Dec. 7, 2017
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When opps open 1M: usually, at the very least Jxx/10xxx
When opps open 1m: not at all, esspecially when their 1m can be a 3 or even a 2crd suit.
Dec. 5, 2017
Wouter Fitski edited this comment Dec. 5, 2017
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