Here are but a few examples of the many Dealmaster screens and printouts . why the Dealmaster Pro bridge simulator program is ideal for Bridge Players. Dealmaster Pro is so extensive in its capabilities that no serious bridge partnership should be without it and it is a must for teachers. You can restrict the dealing.
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There are a number of other dealing programs out there.
Most shuffle only twice. Try this for abouthands and I think you will find that the match is quite close. After 90 days and 60 deals and hands, most players are not convinced that this program approaches statistical norms. That requires a not so standard PC.
Generate a Hand Record « Palo Alto Bridge
Now, any bridge hand generator that doesn’t do the BigBook method of generating hands now is being lazy and by lazy, I mean not reprogramming it. When four or five thousand deals have been created, there is significant data for an informed judgment re dealmasfer of the shapes compared to standard expected.
Time to get over it If someone feels a specific program is being less than random, there must por ways of checking for flaws and fixing them if found.
Looking at some of the next hands where north did not hold the club 5, I’ve also noticed a very high percentage of hands where north holds an approximate club 5, for example the club 3, 4 or 6. I suggest that anyone wishing to implement computer generated hands at their club start with a one month control period – where you actually shuffling everything by hand yourself, but tell them they were computer generated.
I don’t know how this things work but I remember someone made a deal generator in our federation in the 90’s and the seconds needle from the clock would start the randomness. I’m sure if I was playing FreeDoom in another window, it would have gone faster: Oh, and the entropy-generators do handle “suspiciously repetitive same key typing” – i.
I don’t have hard numbers but I am convinced there is a correlation here. To give just one example, I’ve noticed that there appear quite a lot of series of 5 or 6 hands in which one player picks up the same spot-card. If you’re able to control your typing to the microsecond, you’ll be able to influence the RNG though not much, because they also bring in things like “number of free sectors on the disk, system uptime, process id, I realize that physical security is even now more of a danger than cryptanalysis, but we should be able to see the “set bits” and the BigBook “page” for every hand generated, on the hand records.
It did about 22 before it blocked not enough entropyand after that it took about 10, 15 seconds of playing around to get another set. Finally, we believe DM Pro can create every possible bridge deal. While most of the hands are random, I’ve also noticed the relatively frequent occurance of non-random hands, or rather, series of non-random hands.
All platforms have something sane for generating entropy and cryptographically-secure random numbers for seeds dealmaste such. Given that the number of bridge deals is a little less than 2 96one would need a 96 bit Mersenne Twister. Yes the players still noticed a difference between computer hands and hand shuffled hands. It’s random number generator is mathematically more robust than the base one in Dealmaster, but no in a way that anyone would notice even if they played every day.
The program seems to function properly most of the time and then can go completely nuts all of a sudden. One well liked program – Prro Deal – is now included in Dealmaster. The above mentioned data prove its effectiveness.
I don’t know how Big deal is implemented in Deal Master Pro, but it wouldn’t make much sense to implement it without using the method Big deal uses to generate the random numbers. Skin and Language Language: It includes a table with the frequencies for all possible hands. You can do the same. Is there another dealing program that will appease the club members who want a more less random hand generation – perhaps similar to the current ACBL tournament hands? For example, noticing that north has held the club 5 for 4 or more hands in a row, I’ve started to dealmzster north to hold the club 5 again on the next hand.
True, but my partner is a math major and I am a statistics minor and both of us are suspicious of the non-randomness of the hands so far. And then the complaints about the number of voids, singletons and 8-card suits started. The data shows no bias toward excessive voids or singletons. After a while people accepted the fact that they were now playing ‘really’ random deals yeah yeah, it’s not truely random, I knowwhile they weren’t in the past.
Is it any wonder that hand shuffled hands are flatter with fewer singletons voids and long suits than there should be?
PrecisionL, on October, In Big deal, the random generation is performed by involving input from the user. Is there another dealing program that will make appease the club members who want a more random hand generation – perhaps similar to the current ACBL tournament hands? If the code, on the other hand, uses a good random number generator such as the Mersenne Twister, I suspect we are seeing artifact of selective memories.
The dealmaaster is accumulated. BTW, I was also a math major.
Dealmaster Pro for Bridge Players
If the code, for example, uses the standard C library random number generator, these complaints are likely valid–it is a very poor random number generator intended for quick “randomish” values for testing–no one should use it for serious simulations such as bridge dealing where a good approach to randomness is desirable.
In the front end by Kaj Backas, one needs to click a number of times with the mouse. Delete From Topic The post will be removed from this topic completely.
Every time DM Pro deals are generated for club play, the user is invited to print a statistical summary. It would really help if someone knowledgeable in computer science took a look at the underlying code. That ended the controversy. Remember – most peoples hand shuffling does not give random results.
No one has proven it cannot. I didn’t look at dealmsster hands but the test portion of the report proved that the results were as expected. Then let all the superstitious people with selective memory about realmaster and such come out and complain and make fools of themselves before you actually switch.
I haven’t been able to obtain an advantage from this yet, but I should be able to in the future.