Rain, on 2015-November-01, 07:40, said:
Hi, I didn't read most of the replies in Chinese (too difficult for me) but to address the opening post:
There should be no difference in deal statistics except for 1 important thing - in BBO we have official "Best Hand" tournaments, where South HCP is always going to be at least as high as the 2nd highest HCP person. And quite a number of tourneys have this feature. So if this is what modern matches data include, then it is a significant deviation and will result in most of that percentage difference.
The other thing is, some private games are predealt hands, using goulash or other predealt hands. You can' control what these hands would be, but chances are predealt hands are more "interesting" than the normal randomly dealt ones.
So I guess it depends on what the data consists of.
The way you shuffle yout card matter here since:
When you hold and play a hand, you tend to put the cards of the same suit together. So if you don't shuffle at all, when 52 cards are put together, cards of the same suit are still placed with each other. When 4 cards of the same suit are placed in a row, all 4 players each get 1 of them——which means suit will be distributed quite even and the possibility of a balanced hand goes up. Most people are not good enough at shuffling cards to make them distribute "randomly", so if shuffling is done only by a very limited number of times, you get more balanced hand than the "random distribution" given by the computer and that makes a difference.