# Bridge Winners Profile for Kurt Zhang

Kurt Zhang
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• 5
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• 16
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#### Basic Information

Member Since
June 22, 2013
Last Seen
12 minutes ago
Member Type
Bridge Player
about me

Bridge is like the world, full of uncertainty. Maybe this is why I am so fascinated about it. Thanks BW and all my partners and opponents, I am still learning and making progresses steadily. Besides bridge, I try to understand the mathematical nature of life. I don't know which is more difficult, but am sure both requires a lifetime of exploration.

Country
United States of America

#### Bridge Information

Bridge Accomplishments
A number of regional and sectional wins. Look forward to playing in more NABC events.
Regular Bridge Partners
None
BBO Username
kurt00
ACBL Ranking
Non Life Master
Sorry, this user has no cards yet.
Slam bid problem
You are right. Say east has no Q and has KQJxx KJxxxx, is he more likely to open 1S with such a minimum hand?
Slam bid problem
I don't know the exact chance of slam. West has 6+ spades, so he rates to have one or two spade honors. Thus east should have all remaining honors. The K is onside. It comes down to see whether diamonds break. But it looks like I can handle west ...
Patterns VI - Suit Combinations
Every thing involves prior distribution in bridge play is restricted choice. Say West has 23 tight, he has to play them. If he has 234, the chance you see him randomly play 23 is 1/3. This is exactly why we cannot put the same weight in the cards played ...
ROTS: Your Lead from !SA85 !HJ943 !DKJ9642 !C --
Do I know West must have the K? If not, I would cash all trumps, discarding 2 diamonds and 1 heart from dummy before cashing 3 rounds of hearts. I would succeed if the J drops or East has the K (a squeeze on his diamonds and clubs). But I ...
Patterns VI - Suit Combinations
Kurt H and David B: Thanks for pointing out the problem in my calculation. I guess it was the demon of restrictive choice playing on the major suits. I had thought we could skip the simulation suggested by Kit as long as we agree on theoretical calculations, of course Kit ...
Patterns VI - Suit Combinations
Kurt H., I agree with you we should not forget the prior probability. I did put the prior probability on top of my calculation. The prior odds is 2:1 given by restricted choice, that's why I adjust my ratio of 5:6 to 5:3. Don't you ...
Patterns VI - Suit Combinations
I think Napoleon is right the side suits distribution would affect diamonds layout, but the main question is whether the effect is big enough to alter the single suit percentage play. It's easy to verify this using mathematical analysis. Suppose we played 2 spades, 2 hearts, 1 diamonds and ...
Patterns VI - Suit Combinations
Unfortunately 1 is still considered odd :). I said East was OEOO while you are saying West is EOOO. It's the same thing. Note I assumed both opponents have the same pattern, so OOEO was not considered. Not sure if the assumption is in favorable percentage, or if it's ...
Patterns VI - Suit Combinations
Sorry, Frances, I thought you said West discards on the second heart. Now West is known EE?O, and East OO?O. Thus, diamonds must be even number, and play for the drop is a sure thing. According to Napoleon "If the patterns are not of the same type, check ...
Patterns VI - Suit Combinations
I think Napoleon kinda answered Kit's questions, he has to know the pattern before giving the answer. If opponents have even pattern (3 even numbers of suits), one opponent must have EOEE distribution and the other has OEEE. So the forth suit (the odd number of suit) must be ...
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