Difference between revisions of "Random Generator"

From TetrisWiki
Jump to navigation Jump to search
(reverted to previous revision Jujube)
Line 1: Line 1:
[http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/tolor.htm cheap fioricet] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/zykygic.htm pharmacy online online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49073 cingular ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/NoriJohn/vyfuso.htm free free ringtones] [http://ist.greenville.edu/drupal/files/peko.html free tracfone ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/dixopu.htm free wwe ringtones] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/fivede.htm lisinopril online] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/hyguf.htm nextel ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=49 free nokia ringtones] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/MartinGeword buy valium] [http://dcc.syr.edu/dforum/message.asp?MessageID=49064 real ringtones] [http://ist.greenville.edu/drupal/files/nesoz.html cheap adipex] [http://www.hollins.edu/ubb/Forum32/HTML/000284.html cheap phentermine] [http://www.hollins.edu/ubb/Forum32/HTML/000377.html free sony ericsson ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/JackLawson/wujygyp.htm but norco] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/welop.htm cheap vigrx] [http://dcc.syr.edu/dforum/message.asp?MessageID=49023 meridia online] [http://www.hollins.edu/ubb/Forum32/HTML/000350.html diethylpropion online] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/RaimusNuhem free nokia ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/luku.htm xenical online] [http://ist.greenville.edu/drupal/files/huki.html free qwest ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49078 free mono ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000298.html cheap clonazepam] [http://www.hollins.edu/ubb/Forum32/HTML/000282.html cheap soma] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/pyfi.htm free sony ringtones] [http://ist.greenville.edu/drupal/files/woryh.html free motorola ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/fuzuhe.htm cialis online] [http://bugzilla.internet2.edu/attachment.cgi?id=749 sony ericsson ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/noliwu.htm midi ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=37 paxil online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=261 tracfone ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=254 cheap xanax] [http://bugzilla.internet2.edu/attachment.cgi?id=723 free alltel ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/tofi.htm cheap xanax] [http://www.hollins.edu/ubb/Forum32/HTML/000344.html buy pharmacy online] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/jicir.htm viagra online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/vojenyx.htm cheap alprazolam] [http://ist.greenville.edu/drupal/files/sotuky.html soma online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/wudytel.htm free sonyericsson ringtones] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/RobertDelise ultram online] [http://bugzilla.internet2.edu/attachment.cgi?id=724 cheap alprazolam] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/webid.htm cheap hoodia] [http://dcc.syr.edu/dforum/message.asp?MessageID=49017 cheap diazepam] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/rifykup.htm albuterol online] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=14 online soma] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/hebur.htm qwest ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=756 verizon ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=729 clonazepam online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/kygo.htm free kyocera ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BilyKroft/suvycez.htm cheap soma] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/jucidul.htm cheap hgh] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/pyro.htm ambien online] [http://grid.unimelb.edu.au/twiki/pub/Main/NoriJohn/bepi.htm nextel ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000315.html xenical online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/kyvydin.htm norco online] [http://dcc.syr.edu/dforum/message.asp?MessageID=48834 cheap tramadol] [http://dcc.syr.edu/dforum/message.asp?MessageID=49026 cheap vicodin] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/tidu.htm free verizon ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/jivugyv.htm alltel ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000371.html music ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=748 cheap soma] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=52 funny ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=731 funny ringtones] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/cogope.htm online cialis] [http://dcc.syr.edu/dforum/message.asp?MessageID=49058 tracfone ringtones] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/solizup.htm buy tramadol] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/ArturJonson order xanax] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/duxeru.htm but vigrx] [http://dcc.syr.edu/dforum/message.asp?MessageID=49066 samsung ringtones] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/wytyvib.htm buy fioricet] [http://bugzilla.internet2.edu/attachment.cgi?id=741 buy paxil] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=40 ambien online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/tijohyw.htm free sprint ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/jetok.htm mp3 ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=20 cheap fioricet] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/pefuwe.htm cheap lipitor] [http://ist.greenville.edu/drupal/files/wohux.html ultracet online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/ligi.htm cheap tenuate] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/cucof.htm soma online] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/LukeLookin cheap phentermine] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/pinucep.htm cheap vicodin] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/hujox.htm ortho online] [http://ist.greenville.edu/drupal/files/wusywyx.html cheap vicodin] [http://ist.greenville.edu/drupal/files/lunic.html cheap levitra] [http://dcc.syr.edu/dforum/message.asp?MessageID=49024 adipex] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/vuxinuz.htm free motorola ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=722 adipex online] [http://www.hollins.edu/ubb/Forum32/HTML/000365.html nextel ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=21 cheap ultram] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/jusify.htm free nokia ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=262 free funny ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=48922 carisoprodol online] [http://bugzilla.internet2.edu/attachment.cgi?id=742 phentermine online] [http://www.hollins.edu/ubb/Forum32/HTML/000283.html valium online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/jowili.htm free qwest ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000342.html cheap tenuate] [http://bugzilla.internet2.edu/attachment.cgi?id=750 free sonyericsson ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/licox.htm motorola ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000319.html cyclobenzaprine online] [http://www.hollins.edu/ubb/Forum32/HTML/000295.html order norco] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/tokuny.htm cheap lortab] [http://www.hollins.edu/ubb/Forum32/HTML/000354.html cheap flexeril] [http://bugzilla.internet2.edu/attachment.cgi?id=752 tracfone ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000285.html carisoprodol online] [http://www.hollins.edu/ubb/Forum32/HTML/000299.html paxil online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49063 qwest ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=249 buy tramadol] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/sywexyc.htm buy levitra] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/zexuc.htm didrex online] [http://www.hollins.edu/ubb/Forum32/HTML/000380.html free punk ringtones] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/kite.htm ultracet] [http://www.hollins.edu/ubb/Forum32/HTML/000311.html buy hydrocodone] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=42 xenical online] [http://ist.greenville.edu/drupal/files/luho.html nokia ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/rufog.htm sprint ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/jujope.htm buy diethylpropion] [http://www.hollins.edu/ubb/Forum32/HTML/000294.html adipex] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/roteryh.htm free polyphonic ringtones] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/AndreaHolivel cheap cialis] [http://dcc.syr.edu/dforum/message.asp?MessageID=49016 cheap ultram] [http://www.hollins.edu/ubb/Forum32/HTML/000336.html cheap clomid] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/hijosij.htm sagem ringtones] [http://ist.greenville.edu/drupal/files/bigibe.html nextel ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49027 order alprazolam] [http://www.hollins.edu/ubb/Forum32/HTML/000288.html ultram online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/hicif.htm cheap alprazolam] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/sujy.htm samsung ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=25 cheap viagra] [http://bugzilla.internet2.edu/attachment.cgi?id=735 motorola ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/jybuhi.htm viagra online] [http://dcc.syr.edu/dforum/message.asp?MessageID=48916 phentermine online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=256 ultram online] [http://bugzilla.internet2.edu/attachment.cgi?id=760 diazepam online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/xyhyj.htm cheap rivotril] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/vuru.htm cheap ativan] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/hykidi.htm clonazepam online] [http://www.hollins.edu/ubb/Forum32/HTML/000281.html cheap tramadol] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=253 buy carisoprodol] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=26 cheap meridia] [http://ist.greenville.edu/drupal/files/dydyse.html cheap valium] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/rukexo.htm cheap zoloft] [http://ist.greenville.edu/drupal/files/kuxer.html cyclobenzaprine online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/cybo.htm sonyericsson ringtones] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/nezyz.htm order flexeril] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/lyfogo.htm xanax] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/wofo.htm nokia ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/sonuhop.htm valium online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/pevesuz.htm wellbutrin online] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/rypel.htm sildenafil online] [http://www.hollins.edu/ubb/Forum32/HTML/000339.html zoloft online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=251 valium online] [http://www.hollins.edu/ubb/Forum32/HTML/000384.html free midi ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000290.html cialis online] [http://bugzilla.internet2.edu/attachment.cgi?id=744 free qwest ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=266 free real ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/kino.htm free real ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/belizyl.htm polyphonic ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/dijuxoj.htm free tracfone ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000322.html cheap ultracet] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=28 norco online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49072 polyphonic ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=732 buy levitra] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/woguked.htm ambien online] [http://www.hollins.edu/ubb/Forum32/HTML/000334.html cheap sildenafil] [http://www.hollins.edu/ubb/Forum32/HTML/000333.html prozac online] [http://ist.greenville.edu/drupal/files/rucod.html xanax online] [http://www.hollins.edu/ubb/Forum32/HTML/000343.html cheap ortho] [http://ist.greenville.edu/drupal/files/wypy.html free funny ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000296.html vicodin online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BilyKroft/koky.htm cheap phentermine] [http://bugzilla.internet2.edu/attachment.cgi?id=740 norco online] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/figog.htm lortab online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/kozu.htm cheap hydrocodone] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=24 cheap ativan] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/godufit.htm buy paxil] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/sevuv.htm mono ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=755 valium] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/sicofyr.htm cheap tramadol] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/kuvodoj.htm zoloft online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49034 online hydrocodone] [http://dcc.syr.edu/dforum/message.asp?MessageID=49022 viagra online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/niwupu.htm albuterol] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/gedenu.htm rivotril online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/dyzoko.htm verizon ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000314.html lorazepam] [http://grid.unimelb.edu.au/twiki/pub/Main/JackLawson/rejyvob.htm order viagra] [http://www.hollins.edu/ubb/Forum32/HTML/000325.html didrex online] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/kuzypuh.htm order phentermine] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/nofelyr.htm free cingular ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000389.html ericsson ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49077 free sony ericsson ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=267 free motorola ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/kuluc.htm buy zanaflex] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/gekiw.htm order flexeril] [http://www.hollins.edu/ubb/Forum32/HTML/000369.html samsung ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=259 free nokia ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=22 diazepam online] [http://www.hollins.edu/ubb/Forum32/HTML/000376.html free sonyericsson ringtones] [http://ist.greenville.edu/drupal/files/devowy.html buy lorazepam] [http://ist.greenville.edu/drupal/files/role.html real ringtones] The '''Random Generator''' is BPS's name for the algorithm used to generate the sequence of [[tetromino]]es in ''Tetris'' brand [[game]]s that follow the [[Tetris Guideline]].
+
The '''Random Generator''' is BPS's name for the algorithm used to generate the sequence of [[tetromino]]es in ''Tetris'' brand [[game]]s that follow the [[Tetris Guideline]].
  
 
Random Generator generates a sequence of all seven one-sided tetrominoes (I, J, L, O, S, T, Z) permuted randomly, as if they were drawn from a bag. Then it deals all seven tetrominoes to the piece sequence before generating another bag. There are [http://en.wikipedia.org/wiki/Factorial 7!], or 5,040, permutations of seven elements, and it is believed that ''Tetris'' assigns a nearly equal probability to each of these, making it much less likely that the player will get an obscenely long run without a desired tetromino. It can produce a maximum of 12 tetrominoes between one I and the next I, and a run of S and Z tetrominoes is limited to a maximum of 4.
 
Random Generator generates a sequence of all seven one-sided tetrominoes (I, J, L, O, S, T, Z) permuted randomly, as if they were drawn from a bag. Then it deals all seven tetrominoes to the piece sequence before generating another bag. There are [http://en.wikipedia.org/wiki/Factorial 7!], or 5,040, permutations of seven elements, and it is believed that ''Tetris'' assigns a nearly equal probability to each of these, making it much less likely that the player will get an obscenely long run without a desired tetromino. It can produce a maximum of 12 tetrominoes between one I and the next I, and a run of S and Z tetrominoes is limited to a maximum of 4.

Revision as of 23:13, 5 May 2007

The Random Generator is BPS's name for the algorithm used to generate the sequence of tetrominoes in Tetris brand games that follow the Tetris Guideline.

Random Generator generates a sequence of all seven one-sided tetrominoes (I, J, L, O, S, T, Z) permuted randomly, as if they were drawn from a bag. Then it deals all seven tetrominoes to the piece sequence before generating another bag. There are 7!, or 5,040, permutations of seven elements, and it is believed that Tetris assigns a nearly equal probability to each of these, making it much less likely that the player will get an obscenely long run without a desired tetromino. It can produce a maximum of 12 tetrominoes between one I and the next I, and a run of S and Z tetrominoes is limited to a maximum of 4. Exception: In Random Generator as implemented in Tetris The Grand Master Ace, the first piece of the first bag is always I, J, L, or T, just as in the traditional TGM randomizer.

Despite the generic sounding name, presumed employees of BPS are known to treat the term "Random Generator" as a unique name, referring only to this particular algorithm.

Snake sequences

There are two "snake" tetrominoes, called S and Z. As only two snakes will be in a given bag, a sequence of more than two snakes must cross the "seam" between bags. The probability of the next two bags having a sequence of four consecutive snakes, the maximum possible, is 1/(7*6*7*6) for SZSZ and likewise for SZZS, ZSSZ, and ZSZS, for a total of 1/441. But the probability of these being your three next pieces are 1/441 times the probability of being at position 6 in a bag, so the probability of the next four pieces being SZSZ are 1 in 3087.

Define a "2|1 combo" as chosen sixth and seventh pieces in one bag and first piece in next bag, and a "1|2 combo" as chosen seventh piece in one bag and first and second pieces in next bag. Define a "snake" as the S tetromino or the Z tetromino.

The probability of any 2|1 combo (e.g. SZ|Z) is 1/(7*6*7) = 1/294. There are four different 2|1 combos containing all snakes (SZ|Z, SZ|S, ZS|Z, and ZS|S), so the probability of getting a 3-snake 2|1 in your next two bags is 4/294. But the probability of being at the sixth piece in a bag, where your next three pieces are a 2|1, is 1/7, making the probability of being at a three-snake 2|1 equal to 4/(294*7) = 2/1029. By symmetry, the 1|2 probabilities are exactly the same: 2/1029. So for Random Generator, this makes a 1 in 257 chance of your next three tetrominoes being snakes.

To do: compare with odds for TGM randomizer

References

See also