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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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.

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There are a number of other dealing programs out there. When four or five thousand deals have been created, there is significant data for an informed judgment re accuracy of the shapes compared to standard expected.

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. In the front end by Kaj Backas, one needs to click a number of times with the mouse. One well liked program – BIg Deal – is now included in Dealmaster.

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, 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. 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.

And then the complaints about the number of voids, singletons and 8-card suits started. Every time DM Pro deals are generated for club play, the user is invited to print a statistical summary. The above mentioned data prove its effectiveness. 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. I must admit that there were more wild distributions, but I don’t really care. BTW, I was also a math major. Trinidad, on October, 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. 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.


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 dfalmaster for quick “randomish” values for testing–no one should use it for serious simulations such dealmastr bridge dealing where a good approach to randomness is desirable.

That ended the controversy.

Community Forum Software by IP. The data is accumulated. Delete From Topic The post will be removed from this topic completely. The timing and location of the mouse clicks provide the randomness. Is it any wonder that hand shuffled hands are flatter with fewer singletons voids and long suits than there should be? Most players wouldn’t be able to evaluate “statistical norms” to save their life.

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. Thanks for the reply. 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.

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Hanoi5, on October, Try this for abouthands and I think you will find that the match is quite close. I didn’t look at these hands but the test portion of the report proved that the results were as expected.

PrecisionL, on October, 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? I’m sure if I was playing FreeDoom in another window, it would have gone faster: In Big deal, the random generation is performed by involving input from the user.

No one has proven it cannot. Time to get over it If someone feels a specific program is being less than random, there must be ways of checking for flaws and fixing them if found. Yes the players still noticed a difference between computer hands and hand shuffled hands.


That requires a not so standard PC. 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. You can do the same.

Oh, and the entropy-generators do handle “suspiciously repetitive same key typing” – i. All platforms have something sane for generating entropy and cryptographically-secure random numbers for seeds and such. Looking at some dealmatser 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 dealmastter 6.

Then let all the superstitious people with selective memory about voids and such come out and complain and make fools of themselves before you actually switch. Most shuffle only twice. Finally, we believe DM Pro can create every possible bridge deal. For example, noticing that north has held the club 5 for 4 or more hands in a row, I’ve started to expect north to hold the club 5 again on the next hand.

I suggest that anyone wishing to implement computer generated dealmaser 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 have hard numbers but I am convinced there dewlmaster a correlation here.

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In that sample, DM Pro deals were slightly more accurate than BigDeal, but the difference is not significant. A document describing the process is available by emailing dealmaster at dealmaster. Is there another deal,aster program that will make appease the club members who want a more random hand generation – perhaps similar to the current ACBL tournament pto I haven’t been able to obtain an advantage from this yet, but I should be able to in the future.

Have you ever watched your opponents shuffle in team games?