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  1. - Top - End - #61
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    Default Re: Got any Dice Questions?

    Quote Originally Posted by LongVin View Post
    Is the threat of a being trapped under a landslide of dice your greatest fear in life?
    LOL ... I would think that would be a desired way to go (if old age ... or in your sleep ... are not an option)

    Quote Originally Posted by metawidget View Post
    To move from topology to elementary number theory, just as a d3 is a d6 (mod 3), a d1 is a dx (mod 1), where x can be any number of sides you have available.
    True ... I never thought of that ...

    So either of these dice could be considered a d1 ... as they only have 1 degree of freedom?

  2. - Top - End - #62
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    Default July 2007 Highlights

    If you are not interested in new or rare dice that were inventoried this month ... Ignore this post



    Click on the 21000th die above for highlights of dice added in July 2007

    I have almost competed all the sets of MTG Spindowns and am now offering bonuses for both trades and sales ... HERE is what I have / need ... just 9 left

    As always ... If you have any dice questions ... post them to this thread and I will try to answer them for you

  3. - Top - End - #63
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    Default Re: Got any Dice Questions?

    I've always wondered this:

    Is there some sort of industry standard for balance in dice.
    EDIT: Official "Gaming" (A.K.A. Gambling Industry) standard. I don't think there is one if I start making my own dice. <.< >.>

    and

    How can you make SURE a die is balanced.
    Last edited by Leper_Kahn; 2007-08-01 at 11:47 PM.
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  4. - Top - End - #64
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    Default Re: Got any Dice Questions?

    Does anyone other than WoTC make spindown dice? I am looking for a copper or brass one.
    Johannes factotum of the Bard Defense League

    "A witty saying proves nothing." -Voltaire

    "Jack of all trades, master of none, though ofttimes better than master of one."

    The main question that any DM should ask before making a house-rule or exception is, "Is it balanced?"

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    Default Re: Got any Dice Questions?

    Several of the very smallest dice you own were the Crystal Cast wee dice in those plastic tubes, which I recently purchased at Origins this year. I feel special now.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Leper_Kahn View Post
    I've always wondered this:

    Is there some sort of industry standard for balance in dice.
    EDIT: Official "Gaming" (A.K.A. Gambling Industry) standard. I don't think there is one if I start making my own dice. <.< >.>

    and

    How can you make SURE a die is balanced.
    OH yes ... both balance and tolerance (1/5000th of an inch) are required by the different casino gambling commissions

    Balance is tested with a Dice Balance Caliper

    Tolerance is tested with a micrometer


    Quote Originally Posted by BardicDuelist View Post
    Does anyone other than WoTC make spindown dice? I am looking for a copper or brass one.
    KOPLOW makes iridescent plastic spindowns ...

    Unfortunately I know of noone who makes them in metal ...

    They would be quite useful if they did ... as it is much harder to 'accidently' knock over a large metal icosahedron (d20) :)


    Quote Originally Posted by CockroachTeaParty View Post
    Several of the very smallest dice you own were the Crystal Cast wee dice in those plastic tubes, which I recently purchased at Origins this year. I feel special now.
    Congrats

    Should anyone wish to view the smallest (and largest) dice of each standard type ... I have a THEME for that

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    Default Gen Con Indy 2007

    For those attending Gen Con next week and wish to:

    * Meet me (Like many have done)
    * Have me roll your dice for luck for you (like at least 2 have done)
    * Rub my belly for luck (like Buddha has done to him)
    * Rub my head for luck (we wont go there)

    Keep an eye out for a short round guy with either the large red D20 hat ... or the leather tophat
    Last edited by Kevin_Cook; 2007-08-10 at 10:57 AM.

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    Default Re: Got any Dice Questions?

    I've googled for an answer to this with no success so I'll try here.

    A system I play works using opposed rolls. Each side rolls a number of dice (D6s) equal to the ability score in question, each of which varies from 1 to 8.

    What I'm trying to get is a grid of results showing the percentage chance of success for each matchup.

    As an extra, if either result doubles the other then it's a critical in their favour. A second chart showing the percentage chance of a critical for each of these matchups would be great.

    Of course, if someone has a link to somewhere that would aid me in calculating these for myself that'd be great too!
    Last edited by ChrisMcDee; 2007-08-10 at 09:51 AM.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by ChrisMcDee View Post
    I've googled for an answer to this with no success so I'll try here.

    A system I play works using opposed rolls. Each side rolls a number of dice (D6s) equal to the ability score in question, each of which varies from 1 to 8.

    What I'm trying to get is a grid of results showing the percentage chance of success for each matchup.

    As an extra, if either result doubles the other then it's a critical in their favour. A second chart showing the percentage chance of a critical for each of these matchups would be great.

    Of course, if someone has a link to somewhere that would aid me in calculating these for myself that'd be great too!
    Not really a dice question per se ... more a math question ... but I can try

    1) What you are proposing would seem to be a series of charts with the varying number of dice for each chart

    EXAMPLE:

    1 DIE VS 1 DIE
    1 DIE VS 2 DICE
    1 DIE VS 3 DICE
    ...
    8 DICE VS 8 DICE

    2) You can probably boil down the number of charts by reducing them to their differences ... ie the overall chances are the same with 1 die vs 1 die ... as they are with 8 dice vs 8 dice

    You can also further reduce the number of charts / tables by only doing one side of the combinations ... for example you dont need to do 8 dice vs 1 die if you already have 1 die vs 8 dice as the combinations are the same

    3) Here is a simple example done with 1 d6 each

    Die
    Rolls 1 2 3 4 5 6 <- Player A
    1 T A A A A A
    2 B T A A A A
    3 B B T A A A
    4 B B B T A A
    5 B B B B T A
    6 B B B B B T
    ^
    |
    Player B

    In the chart ...

    A indicates a win by A
    B indicates a win by B
    T indicates a tie

    So we count up all the combos and come up with

    A wins 15 of 36 times (or 41%)
    B wins 15 of 36 times (or 41%)
    Ties occur 6 of 36 times (or 18%)

    You can take this out and do this for all the combos of each sets of dice ... Note ... you are going to have a LOT of tables / charts

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    Default Re: Got any Dice Questions?

    Yeah, it sounds like a tough bit of work, that's why I was hoping there'd be a nice java applet or something that would do it for me Like you said, for something like 8 Dice vs 7 Dice it's going to be a LOT of charts.

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    Default August 2007 Highlights

    If you are not interested in new or rare dice that were inventoried this month ... Ignore this post



    Click on the new Call of Cthulhu dice above for highlights of dice added in August 2007

    I have almost competed all the sets of MTG Spindowns and am now offering bonuses for both trades and sales ... HERE is what I have / need ... just 8 left

    As always ... If you have any dice questions ... post them to this thread and I will try to answer them for you

  12. - Top - End - #72
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    Default Re: Got any Dice Questions?

    I'm glad I saw this thread on its monthly rise from the depths.

    You say that old Q-Workshop dice sometimes had problems with their d20s? How would one know whether one has such a die? My first d20, bought some time around 1990, almost never comes up 20 (and yes, I have rolled and recorded enough to be statistically confident that it's not just bad luck). It's a translucent red plastic, and it came in a set with a green d4, a purple d6, a pink d8, a blue d10, and a colorless d12.

    While we're at it on that set, the d12 has the 7, 8, 9, 10, and 11 all clustered around the 12, which makes it relatively easy to gimmick-throw a high number on it: Aim for the 12, and even if you're off by one face, you'll still roll high. Is this a typical arrangement for d12s?

    On a more general subject, do you have any opinions on dice with an asymmetrical shape (i.e., where not all faces are interchangeable), such as the pentagonal-prism d7 or the golf-ball d100? It seems like it would be impossible to guarantee the fairness of such a die, since the probabilities of the various sides might depend (for instance) on the surface upon which it's rolled.

  13. - Top - End - #73
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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Chronos View Post
    I'm glad I saw this thread on its monthly rise from the depths.

    You say that old Q-Workshop dice sometimes had problems with their d20s? How would one know whether one has such a die? My first d20, bought some time around 1990, almost never comes up 20 (and yes, I have rolled and recorded enough to be statistically confident that it's not just bad luck). It's a translucent red plastic, and it came in a set with a green d4, a purple d6, a pink d8, a blue d10, and a colorless d12.
    The best way to know if a die is unbalanced is to spin it in a dice caliper ... the second best way is to spin it like a top on a hard surface ... if the die wobbles a lot along one or more axis ... then it is unbalanced

    While we're at it on that set, the d12 has the 7, 8, 9, 10, and 11 all clustered around the 12, which makes it relatively easy to gimmick-throw a high number on it: Aim for the 12, and even if you're off by one face, you'll still roll high. Is this a typical arrangement for d12s?
    I am not sure what die you are looking at ... the CoC die has 3 7 8 9 11

    On a more general subject, do you have any opinions on dice with an asymmetrical shape (i.e., where not all faces are interchangeable), such as the pentagonal-prism d7 or the golf-ball d100? It seems like it would be impossible to guarantee the fairness of such a die, since the probabilities of the various sides might depend (for instance) on the surface upon which it's rolled.
    In general they are not fair ... but if you properly proportion the sides ... you can make rolls close to fair

    BTW .... the d100 has 100 faces / extension member facets ... all with the same shape and area ... ie a circle ... the trick is ... arranging them on the sphere

  14. - Top - End - #74
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    Default Re: Got any Dice Questions?

    The best way to know if a die is unbalanced is to spin it in a dice caliper ... the second best way is to spin it like a top on a hard surface ... if the die wobbles a lot along one or more axis ... then it is unbalanced
    Ah, you're using the term "unbalanced" in a different sense than I was interpreting it. The test you describe would be for determining if the moments of inertia along the principle axes are the same, but I'm just referring to the fact that on my die, not all of the faces have the same probability (which is possible even if the die has a balanced moment of inertia). As in, over something like 500 test rolls, it's come up 20 only three times.

  15. - Top - End - #75
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    Default Re: Got any Dice Questions?

    I recently acquired a set of blue and black Dragon Dice from Q-workshop, And I've noticed that the d20's number arrangement is a bit odd.
    If you turn the die to see the 20 face, and start moving it one side left, you get the numbers 19, 18, 17, and 16. The 15 and following numbers do not follow the spindown pattern up top. Conversely, starting at 1 and turning to the right will yield 2, 3, 4, and 5.
    My Question is, Is this unusual, or just a style I've never encountered before?
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    Quote Originally Posted by Mark Hall View Post
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    Default Re: Got any Dice Questions?

    Do you know of any dice manufacturers that produce interesting dice which can ship to the UK? I

    've been searching long and hard but figured that you or someone else here might know.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Darkforge View Post
    Do you know of any dice manufacturers that produce interesting dice which can ship to the UK? I

    've been searching long and hard but figured that you or someone else here might know.
    I believe Q-Workshop does.
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    Default Re: Got any Dice Questions?

    I happen to be in posession of a Black MTG Judgment die which appears to be missing from your collection. Well, to be more specific, my friend is, though I suspect he wouldn't have much of a problem with donating it to your cause. I didn't read through every other post so I applogize if this has been covered already. If you were willing to cover any mailing costs (If its under a dollar or two I don't mind covering it) I'm sure I could convince my friend to give it up and add to the horde.

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    Default Re: Got any Dice Questions?

    Sorry for the delay ... In the process of moving a stained glass store ...

    Quote Originally Posted by Chronos View Post
    Ah, you're using the term "unbalanced" in a different sense than I was interpreting it. The test you describe would be for determining if the moments of inertia along the principle axes are the same, but I'm just referring to the fact that on my die, not all of the faces have the same probability (which is possible even if the die has a balanced moment of inertia). As in, over something like 500 test rolls, it's come up 20 only three times.
    The end result would be the same ... if a die is unbalanced along one or more principal axis' ... then the odds of rolling one extension member facet (side / face) will be skewed

    Quote Originally Posted by Gralamin View Post
    I recently acquired a set of blue and black Dragon Dice from Q-workshop, And I've noticed that the d20's number arrangement is a bit odd.
    If you turn the die to see the 20 face, and start moving it one side left, you get the numbers 19, 18, 17, and 16. The 15 and following numbers do not follow the spindown pattern up top. Conversely, starting at 1 and turning to the right will yield 2, 3, 4, and 5.
    My Question is, Is this unusual, or just a style I've never encountered before?
    It doenst seem to be unusual ... the Celtic II ... Nuke ... Runic II ... Skully II ... Mystic ... all seem to have this pattern


    Quote Originally Posted by Darkforge View Post
    Do you know of any dice manufacturers that produce interesting dice which can ship to the UK? I

    've been searching long and hard but figured that you or someone else here might know.
    As was stated above ... Q-Workshop

    Quote Originally Posted by Danin View Post
    I happen to be in posession of a Black MTG Judgment die which appears to be missing from your collection. Well, to be more specific, my friend is, though I suspect he wouldn't have much of a problem with donating it to your cause. I didn't read through every other post so I applogize if this has been covered already. If you were willing to cover any mailing costs (If its under a dollar or two I don't mind covering it) I'm sure I could convince my friend to give it up and add to the horde.
    Not only will I cover mailing costs ... I am willing to trade for them if he would like to trade for a more desirable spindown :) ... should it exist in my duplicates
    Last edited by Kevin_Cook; 2007-09-04 at 12:19 PM.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Gralamin View Post
    I believe Q-Workshop does.

    [QUOTE=Kevin_Cook;3143459]
    As was stated above ... Q-Workshop
    QUOTE]


    Thanks for the help guys, I'll have to try them out...

    One question for you...

    On most die the opposite faces add up to the number of sides on the dice +1 (eg on a d6 you have 6+1, 5+2, 4+3 =7 on opposite sides) but a d10 is different to this (opposite sides add up to 9 as the numbers are 0-9) and the only d10's with the numbers 1-10 on haven't reordered the numbers so all opposites add up to 9 (you normally find the opposites add up to 9 except the 10 on one side and 9 on the other, adding up to 19)

    so my question is: have you ever found a true d10 with numbers 1-10 (not 0-9) whose opposite sides each add up to 11? and if so where can i get one cos I am quite overly pedantic and have put way too much though into this

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    Default Re: Got any Dice Questions?

    [QUOTE=Darkforge;3143615]
    Quote Originally Posted by Kevin_Cook View Post
    As was stated above ... Q-Workshop
    QUOTE]


    Thanks for the help guys, I'll have to try them out...

    One question for you...

    On most die the opposite faces add up to the number of sides on the dice +1 (eg on a d6 you have 6+1, 5+2, 4+3 =7 on opposite sides) but a d10 is different to this (opposite sides add up to 9 as the numbers are 0-9) and the only d10's with the numbers 1-10 on haven't reordered the numbers so all opposites add up to 9 (you normally find the opposites add up to 9 except the 10 on one side and 9 on the other, adding up to 19)

    so my question is: have you ever found a true d10 with numbers 1-10 (not 0-9) whose opposite sides each add up to 11? and if so where can i get one cos I am quite overly pedantic and have put way too much though into this
    I would have to locate them an compare

  22. - Top - End - #82
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    Default Re: Got any Dice Questions?

    What do you know about the statistical accuracy of "strange" dice, such as the d3, d5, d7, d14, d16, d24, or other atypically shaped dice?
    Last edited by Fax Celestis; 2007-09-04 at 03:30 PM.

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    Default Re: Got any Dice Questions?

    What do you know about the statistical accuracy of "strange" dice, such as the d3, d5, d7, d14, d16, d24, or other atypically shaped dice?
    I can cover this. It depends on how the die is constructed. There's a semi-regular polyhedron for 24 (you stack a shallow pyramid on each side of a cube), which should be completely fair. For any even number of sides, you can either do two pyramids base-to-base (if it's a multiple of four), sort of like a d8, or two pyramids with a twist (if it's not a multiple of four), like a d10, and those are fair, too. And for any number of faces at all, you can make a prism shape with pointed or rounded ends so it can only land on a side, and that's fair, too. In all of these cases, every face is just like every other face, so barring an off-center weight inside or something, they'll be fair.

    If you're talking about other shapes, though, then there's no such guarantee. As Kevin Cook already said on the topic,
    In general they are not fair ... but if you properly proportion the sides ... you can make rolls close to fair
    Personally, though, I'm enough of a mathematical purist that I wouldn't trust them.

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    Default Re: Got any Dice Questions?

    Do you have any dice that use roman numerals? I'd just like to see one.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Ivius View Post
    All those d4s have to make an awesome security system.
    Quoted for pure awesome.
    Quote Originally Posted by HerrTenko View Post
    TimeWizard, you've got to do something about all that Clarity you've got. It starts by just ruining jokes, but soon you'll be dreaming of electric sheep and stuff. It can't be good for you.

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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Fax_Celestis View Post
    What do you know about the statistical accuracy of "strange" dice, such as the d3, d5, d7, d14, d16, d24, or other atypically shaped dice?
    The d3 d14 d16 and d24 should roll pretty fairly ... any die that has extension member facets (faces/sides) that are not the same shape and area ... runs the risk of not being able to produce equally random results

    With that said ... there are many other shapes ... that are used as dice ... that do not roll fairly ... CLICK HERE if you wish to see the list of shapes I have found to date


    Quote Originally Posted by Chronos View Post
    If you're talking about other shapes, though, then there's no such guarantee. As Kevin Cook already said on the topic, Personally, though, I'm enough of a mathematical purist that I wouldn't trust them.
    I agree .. I dont use them either ... for the same reason that I dont use D10's ... I still use the old method of using d20 numbered 0-9 twice as my d10 d20 and percentile :)

    As a final note on the subject ... I assisted in design of some of those odd dice ... I know that at least 2 were tested in a machine designed by a Dr Dan Murry in Canada ... that rolled ... and recored the outcome of the roll for later analysis ... and it was found that the proportions were close enough for casual game play


    Quote Originally Posted by Accountant View Post
    Do you have any dice that use roman numerals? I'd just like to see one.
    I have several ... CLICK HERE

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    Default Re: Got any Dice Questions?

    I'm talking about this d5, in particular:
    Spoiler
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    Default Re: Got any Dice Questions?

    Quote Originally Posted by Fax_Celestis View Post
    I'm talking about this d5, in particular:
    Spoiler
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    The D5 was one that was tested using Dr Dan's device and was found to be very close to fair
    Last edited by Kevin_Cook; 2007-09-05 at 01:31 PM.

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    Default September - October 2007 Highlights

    If you are not interested in new or rare dice that were inventoried this month ... Ignore this post



    Click on the Genuine Opal Dice
    dice above for highlights of dice added in September & October

    I have almost competed all the sets of MTG Spindowns
    and am now offering bonuses for both trades and sales ...
    HERE
    is what I have / need ... just 7 left

    As always ... If you have any dice questions ... post them to this thread and I will try to answer them for you

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    Default Re: Got any Dice Questions?

    Upcoming Q-workshop designs:

    Tri-color dice



    Japanese dice


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