Gray Code / De Bruijn Sequence

76 entries in Cards / Principles / Gray Code / De Bruijn Sequence
Creators Title Comments & References Year Source Page AA Categories
Charles T. Jordan Coluria No. 25, thirty-two-deck of cards is cut and dealt into six piles, two remaining cards pocketed, colors of top cards code bottom cards and cards in pocket, done out-of-room
Variations 1919/1920 Thirty Card Mysteries 68
Charles T. Jordan Satan's Trance No. 26, four cards removed from thirty-two-card deck and put in envelope, lights out, when lights are back on the names of cards are written on envelope
Variations 1919/1920 Thirty Card Mysteries 70
William Larsen, T. Page Wright Suitability out-of-hand selection of three cards, they all name the suits, performer then divines all cards
Related to 1928 The L. W. Card Mysteries 28
Charles T. Jordan Odd or Even spectator pockets any card of a chosen suit, gray code applied to odd-even in one suit
 		1937 Encyclopedia of Card Tricks 199
Bob Hummer Hummer's Bible Trick bible book test, prediction of word, with playing cards
Also published here 1944 Six-Trix for 1944 3
Bob Hummer Hummer's Magazine Test with playing cards
Also published here 1944 Six-Trix for 1944 5
Ben Christopher Other Voices II three spectator choose cards, medium behind screen divines them, red-black gray code, see p. 200 for further references
Related to Aug. 1968 The Pallbearers Review Vol. 1-4 (Vol. 3 No. 10) 201
Karl Fulves Gray Codes definition, see also Addenda on page 60
 		1969 Faro & Riffle Technique (Issue Gray Codes) 17
Karl Fulves Coding The Deck
  • Coding The Faces
  • Coding The Backs
  • Coding The Spectators
 		1969 Faro & Riffle Technique (Issue Gray Codes) 17
Karl Fulves Example 11 selection from packet, shuffled, value of top card used to count down to selection, gray code and faro
 		1969 Faro & Riffle Technique (Issue Gray Codes) 18
Karl Fulves Example 12 selection from packet, shuffled, value of selection used to count down to selection, gray code and faro
 		1969 Faro & Riffle Technique (Issue Gray Codes) 18
Karl Fulves Example 13 two spectators note cards in a packet, after some questions and shuffling they are on the top, gray code and faro
 		1969 Faro & Riffle Technique (Issue Gray Codes) 19
Karl Fulves Example 14 two spectators note cards in a packet, after some questions and shuffling they are on the top, gray code and faro
 		1969 Faro & Riffle Technique (Issue Gray Codes) 20
Karl Fulves Example 15 blank card is inserted in card packet, it becomes a card according to spectator's wishes (more or less), gray code and faro
Related to 1969 Faro & Riffle Technique (Issue Gray Codes) 21
Karl Fulves Example 16 32 cards, any card specified in stages (color, suit, value...) comes to top after some faro shuffling, gray code and faro
 		1969 Faro & Riffle Technique (Issue Gray Codes) 22
Karl Fulves Gray Stak combining gray code and stay stack in a deck with eight cards, in the application a selection is divined, see also Addenda on page 60, for sixteen- and 32-Card Arrangements see reference
Related to 1969 Faro & Riffle Technique (Issue Gray Codes) 23
Karl Fulves In The Beginning blank card is inserted in deck, it becomes a card according to spectator's wishes, gray code and faro, see also reference for further references, for set-up correction see page 56
Related to 1969 Epilogue (Issue 6) 44
Karl Fulves The Gray Liar questions about selection are asked, at the end top card has text written on it that says when spectator lied and where the selection is, faro, see also Addenda on page 60
Related to 1970 Faro & Riffle Technique (Issue First Supplement) 56
Karl Fulves An Odd Gray Coincidence two packets from different decks, question and faro shuffling procedure before coincidence
 		1970 Faro & Riffle Technique (Issue First Supplement) 57
William Zavis Beginning Again odd-backed blank card is inserted in deck, it becomes a card according to spectator's wishes, gray code and faro, full-deck version
Related to 1970 Faro & Riffle Technique (Issue Second Supplement) 62
Roy Walton Flip Flop simplified version with reverse faros
Inspired by 1970 Faro & Riffle Technique (Issue Second Supplement) 64
Karl Fulves The Interrogation Technique packet of blank cards is faro shuffled, one printed card is then seen which matches what the spectator wanted (color, odd/even,...)
Related to 1970 Faro & Riffle Technique (Issue Second Supplement) 66
Roy Walton The Abacus Card Trick four cards chosen, gray code on one way backs
Related toVariations 1970 Faro & Riffle Technique (Issue Second Supplement) 69
Earl Keyser Faro Ideas - Reflected Gray Stack sixteen-Card Arrangement & 32-Card Arrangement, solution
Inspired by 1972 Epilogue (Issue 16) 151
Earl Keyser Faro Again with rough-smooth
Inspired by 1973 Epilogue (Issue 17) 159
Karl Fulves ESP In Gray five cards selected from face up face down deck are divined, gray code
Related to 1973 Notes From Underground 55
Martin Gardner Yin-Yang only high cards used, five cards dealt out in row, spectator marks them with either red/black, odd/even or high/low property, all cards divined, three-way gray code
 		Feb. 1974 The Pallbearers Review Vol. 9-10 (Vol. 9 No. 4) 710
Karl Fulves White Line Problem no-touch condition definition, spectator upjogs four-of-a-kind and then removes one, performer divines it, two handlings, using different red backs in one deck
Related to Feb. 1975 The Pallbearers Review Vol. 9-10 (Vol. 10 No. 4) 865
Karl Fulves Reflections saliva on thumbnail for impromptu shiner
Inspired byRelated to 1979 The Chronicles (Issue 16) 1220
Alex Elmsley Blind Stud cards are cut and dealt out, things about hands are revealed with back turned, gray code to base 4
Also published here 1980 Curioser 36
Karl Fulves Gray Codes
1980 Curioser 39
Karl Fulves No Tables, No Charts binary numbers & gray code
 		1980 Curioser 42
Karl Fulves A Four-Bit Trick card in square layout of face-up/face-down cards turned over and divined
Related to 1980 Curioser 43
Karl Fulves Auto Abacus gray code on one way backs
Inspired by 1980 Curioser 46
Karl Fulves The Auto Abacus Trick gray code on one way backs, "The 52-Card Deck"
Inspired by 1980 Curioser 49
Karl Fulves Reflection stay stack & gray code
 		1980 Curioser 50
Karl Fulves Red Less Black spectator separates colors from back, number of errors are called, performer then names all cards
 		1980 Curioser 51
Karl Fulves A Gray Code Problem turning blocks over followed by faro shuffles, four-card-groups examined regarding uniqueness of face-up/down distribution
 		1980 Curioser 52
Bob Hummer Hummer's Bible Trick bible book test, prediction of word, with playing cards
VariationsAlso published here 1980 Bob Hummer's Collected Secrets 22
Bob Hummer Hummer's Magazine Test with playing cards
Also published here 1980 Bob Hummer's Collected Secrets 23
Bob Hummer Voodoo Fortune Telling cards with questions on one side and different pictures of zombies on the other side, one question is selected and cards separated several times while checking different features of the zombies, eventually a four digit number is evaluated and leads to the answer of the question in a book, system is explained with playing cards
 		1980 Bob Hummer's Collected Secrets 73
Martin Gardner Hummer's Fortune Telling Book cards with questions on one side and different pictures of zombies on the other side, one question is selected and cards separated several times while checking different features of the zombies, eventually a four digit number is evaluated and leads to the answer of the question in a book
Related toVariations 1980 Bob Hummer's Collected Secrets 77
Alex Elmsley Mental Boxer six cards are divined after cards are mixed face-up face-down, gray code
Related to 1981 Fourcast 22
James E. Sansotera James E. Sansotera version of Hummer's Fortune Telling Book, without book method
Inspired by 1981 Bob Hummer's Collected Secrets 115
Thomas Alan Waters Grayven 32 design cards, divination, sound reading and gray code
 		1983 Mind, Myth & Magick (Issue Mindscript 3: The Symbol Test) 413
Thomas Alan Waters Graydation cards with pictures and words are selected and divined
 		1983 Mind, Myth & Magick (Issue Mindscript 3: The Symbol Test) 416
Thomas Alan Waters Grayce spectator selects one picture card, which is divined later
 		1983 Mind, Myth & Magick (Issue Mindscript 3: The Symbol Test) 418
Thomas Alan Waters, Bob Hummer Grayze divination of a card, five cards on the table, covered with a handkerchief
Related to 1983 Mind, Myth & Magick (Issue Mindscript 3: The Symbol Test) 420
Thomas Alan Waters Trisonic design cards, three are divined
Inspired byRelated to 1983 Mind, Myth & Magick (Issue Mindscript 3: The Symbol Test) 424
Sam Schwartz A Book Test in Code stack used to select words, top or bottom of page gives gray code for divination
 		1983 Astrology — The Hidden Force 41
Philip T. Goldstein, Alex Elmsley Q&AVM
Inspired byRelated to 1984 Thequal 9
Philip T. Goldstein Looming Thoughts combination with self-correcting set-up
Inspired by 1984 Thequal 15
Thomas Alan Waters Hellaphone spectator choses a number on a telephone, name is divined, not real phone numbers, first published in "New Invocation" No. 31, 1986
 		1993 Mind, Myth & Magick (Issue Magazine Miscellanea) 441
Alex Elmsley Animal, Vegetable and Mineral pack of children's picture cards, three selections made and divined
Variations 1994 The Collected Works of Alex Elmsley — Volume 2 89
Alex Elmsley Blind Stud cards are cut and dealt out, things about hands are revealed with back turned, gray code to base 4
Also published here 1994 The Collected Works of Alex Elmsley — Volume 2 406
Stephen Minch Gray Code some credit information
 		1994 The Collected Works of Alex Elmsley — Volume 2 406
Alex Elmsley Mental Boxer six cards are divined after cards are mixed face-up face-down, gray code
 		1994 The Collected Works of Alex Elmsley — Volume 2 410
Alex Elmsley Kingfisher four cards are divined, gray code
 		1994 The Collected Works of Alex Elmsley — Volume 2 414
Alex Elmsley Pursuit of Thought four cards are divined, gray code
 		1994 The Collected Works of Alex Elmsley — Volume 2 419
Philip T. Goldstein Sensus cards with words that address senses
Inspired by
  • "Sensibility" (Bill Miesel, Psycho-Gizmo #14)
 1994 Thabbatical 101
Philip T. Goldstein Consensus cards with words that address senses
 		1994 Thabbatical 107
Karl Fulves Gray Is A Color using color reflection on card underneath to get color code, short comment only
 		2003 Off The Books (Issue 6) 103
Karl Fulves Gray's Anatomy connection between gray code and binary numbers, application with 24-cards stack, three consecutive cards tell position in stack
 		2005 Combo II 105
Karl Fulves, Robert E. Neale Distant Marker spectator cuts deck, performer names number and a card of that value is at its numerical position from top
 		2005 Combo II 110
Denis Behr Gray Matters three selections, fair conditions, gray code
Related to 2007 Handcrafted Card Magic 84
Pit Hartling Identidades Remotas packet is cut, three cards are selected and divined
 		2010 El Manuscrito (Vol. 3 No. 13) 369
Persi Diaconis, Ron Graham The Magic of De Bruijn Sequences Deck tossed out, deck is freely cut and five cards are selected, magician correctly divines them all, also describes the mathematics behind De Bruijn sequences
Inspired byVariations 2012 Magical Mathematics 18
Persi Diaconis, Ron Graham Going Further Describes extra variations on the basic De Bruijn sequence trick, with some history behind the use of this principle in magic
Inspired by 2012 Magical Mathematics 25
Persi Diaconis, Ron Graham Is This Stuff Actually Good For Anything? Chapter on uses of De Bruijn sequences outside of magic
 		2012 Magical Mathematics 30
Ronald A. Wohl (Ravelli) Order Matters Deck tossed out, deck is freely cut and five cards are selected, magician correctly divines them all, also describes the mathematics behind a different type of De Bruijn sequence
 		2012 Magical Mathematics 47
Ronald A. Wohl (Ravelli) A Mind-Reading Effect Deck tossed out, deck is freely cut and three cards are selected, magician correctly divines them all
 		2012 Magical Mathematics 52
Persi Diaconis, Ron Graham Universal Cycles Again Deck tossed out, deck is freely cut and five cards are selected, magician correctly divines them all
 		2012 Magical Mathematics 55
Simon Aronson, Ramón Riobóo, Harapan Ong, Persi Diaconis, Ron Graham The Three Hours Three spectators each think of a card, magician divines each card without making any wrong statements
Inspired byRelated to 2019 A Stack to Forget 48
Ramón Riobóo Same Number for Three The Three Hours, three spectators think of card at chosen number, magician divines
Also published here 2019 Second Thoughts 157
Michał Kociołek 3H three spectators think of cards at a agreed-upon number in the deck, they are found, no-no's fishing
  • Twelve-card problem
Inspired by 2021 More Plots & Methods 25
Michał Kociołek The Dreamer spectator cuts anywhere, takes five cards and thinks of the highest one, all five are divined
  • This is the (one) way (one-way version)
 		2021 More Plots & Methods 34