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 Post subject: Poker hands, but with dominoes (can you help me?)Posted: Wed Nov 21, 2012 10:28 am

Joined: Mon Aug 18, 2008 10:16 pm
Location: Somewhere Else
I found some rules online to a version of poker played with dominoes. But it was a really, really horrible version. So bad that I won't even link to it, in fact (though it is the first Google result for the term if you want to find it). And I thought, "I could do way better than that."

So I came up with a list of possible hands. But I have no idea how to calculate how probable they are, which means that I can't rank them. Additionally, the probabilities will of course change depending on the size of the set. Double-9 is the smallest set that they can all be used in, but I'm thinking double-12 (so there are 13 ranks, like in cards) would work a lot better, in spite of having 91 pieces to a poker deck's 52 cards.

Here are the basics: numbers are ranked naturally (so there is no ace equivalent that can be either high or low). Doubles are considered to be an additional rank that is higher than all the others, in some cases. Each player gets 5 dominoes which they arrange in a row, touching by the long sides, to make 2 rows of 5 numbers. Any number on either side that isn't part of a hand combination is referred to as a kicker. Kickers on a double count highest, regardless of the double's rank.

Here are the hands I've come up with, with some examples. There is some overlap between them because I don't yet know how they should be ranked. Also, plain pairs are not counted as anything special - it takes at least 3 dominoes to make something besides just "high number".

Royal Flush: a straight flush in doubles. Ranked by highest double.

34567
34567

Straight Flush: a sequence on one side and a 5 of a kind on the other. Ranked by the suit of the matching side, followed by the high number in the straight.

33333
56789

Flush: 5 of a kind on one side, or five doubles. Ranked by the suit of the matching side, followed by the highest kicker.

22222
14679

Double Straight: 5 in sequence on each side, not necessarily ordered. Ranked by the highest number in the higher straight, and then by the highest number in the lower straight.

56789
12534

Straight: 5 in sequence on one side. Ranked by the highest number in the straight, followed by the highest kicker.

45678
23219

Long Straight: 10 numbers in sequence over both sides.

13570
26498

4 of a kind: 4 of a kind on one side, or four doubles. Ranked by the suit of the set, followed by the highest kicker.

11117
24589

Full house: 3 of a kind on each side and the other 2 numbers are identical on both sides. Ranked by the highest triplet, followed by the second triplet. Doubles do not count as a suit for this hand. Equivalent to a double 3-loop (see below).

33342
24666

Double 3 of a kind: 3 of a kind on each side, or 3 doubles with the two other dominoes making another 3 of a kind with one of them. Ranked by the highest triplet, followed by the second triplet, followed by the highest kicker.

44417
25888

3 of a kind: 3 of a kind on one side, or 3 doubles. Ranked by the triplet, followed by the highest kicker.

33346
47821

Five-loop: 5 dominoes that could link to form a loop. Ranked by number of doubles included (can be up to 2), followed by the high pair, followed by the second highest pair, etc.

12244
66331

Four-loop: 4 dominoes that could link to form a loop. Ranked by number of doubles included (can be up to 1), followed by the high pair, followed by the second highest pair.

78872
99114

Three-loop: 3 dominoes that could link to form a loop. Ranked by the high pair within the loop, followed by the second pair.

45533
22413

Last edited by Jared on Fri Nov 23, 2012 12:12 pm, edited 3 times in total.

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 Post subject: Re: Poker hands, but with dominoesPosted: Wed Nov 21, 2012 11:02 am

Joined: Sun Mar 15, 2009 12:00 am
Location: Jarrow, England
Interesting concept. But I play dominoes (normal set up to double 6) and poker (Texas Hold'em) and never the twain shall meet

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 Post subject: Re: Poker hands, but with dominoesPosted: Wed Nov 21, 2012 11:50 am

Joined: Mon Aug 18, 2008 10:16 pm
Location: Somewhere Else
Well, I don't really play poker myself, but the ranking of hands is pretty classic. I like to play a rummy variation based on them, and one of my favorite games (Big Two) uses a subset.

Also, edited to add a hand I forgot.

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 Post subject: Re: Poker hands, but with dominoes (can you help me?)Posted: Fri Nov 23, 2012 12:13 pm

Joined: Mon Aug 18, 2008 10:16 pm
Location: Somewhere Else
Edited a bit to hopefully clarify some things.

Is there anyone out there who thinks this is at all interesting besides me? I'm not quite sure how to calculate the probabilities for most of these...

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