Mathematical Forces
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Creators Title Comments & References Year Source Page CARC Categories
Unknown The Capital Q back-count force with counters/coins or cards, as divination with partial stack 1889 Tricks with Cards 95
Unknown The Capital Q back-count force with counters/coins or cards, as divination with partial stack 1890 More Magic 27
Friedrich W. Conradi-Horster Gezwungene Wahl magician's choice from 32 cards and layout on table see also "Das Wiederfinden zweier Karten" (1896),
"Prof. Hofzinser's Geheimnis" (Johann Nepomuk Hofzinser, 1896)
1896 Der moderne Kartenkünstler 121
Unknown Reverse Deal Force see No. 3 1937 Encyclopedia of Card Tricks 19
Unknown An Expert at Figures using addition force 1940 Expert Card Technique 268
Unknown Four Card Force calculating and dealing see also "Call Poker" (John J. Crimmins Jr., 1941) 1940 Expert Card Technique 191
Unknown The Mathematical Force recount 1941 / 27 Tarbell Course in Magic - Volume 1 264
Ronald B. Edwards Free Force forcing 14 or 15 with playing cards, see reference for correction see also "The Back Room" (Bruce Elliott, 1944) 1944 The Phoenix 51-100 (Issue 62) 254
Verne Chesbro Three Weirds three cards are predicted, three mathematical forces 1945 The Phoenix 51-100 (Issue 84) 340
Paul Clive Egg a la Card Name of card appears on hard boiled egg after it is peeled 1950 Scarne on Card Tricks 21
Unknown The Ten-to-Twenty Force 1950 Scarne on Card Tricks 21
John Scarne Sympathetic Aces Ten-Twenty Force to locate all four Aces one by one, minor variation included to locate Royal Flush 1950 Scarne on Card Tricks 39
Unknown The Ten-to-Twenty Force 1950 Scarne on Card Tricks 40
Russell Swann The Photographic Match Card is selected, match is lit and when extinguished, name of card appears on head of match 1950 Scarne on Card Tricks 65
Chester Morris Perfect Prediction Mathematical procedure 1950 Scarne on Card Tricks 127
Unknown The Ten-to-Twenty Force 1953 "Come a little closer..." 28
Tony Corinda (3) The Fourteen/Fifteen Set Up forcing number 14 or 15 1958 Mnemonics and Mental Systems 76
Jack Avis Suit Force with down-under-deal 1959 Card Tricks 313
Edward Marlo Stay-Stack Prediction with one and two decks, forcing a number with stay stack 1959 The Cardiste (Issue 12) 8
Edward Marlo A Simple Ace Routine aces lost and found with 4 times the 10-20 force 1964 Early Marlo (Section "Oddity & Other Miracles") 90
Unknown 10-20 Force 1969 Expert Card Mysteries 98
Unknown Backwards Counting Force 1969 Expert Card Mysteries 134
Karl Fulves As A Force card is selected and shuffled in deck, spectator should now also remember card next to his selection which is forced and can have different back 1970 Faro & Riffle Technique (Section "First Supplement") 54
Billy O'Connor Ten-Twenty Force 1971 Reputation-Makers 38
Karl Fulves Hex Squared 4x4 layout, spectator moves around according to fixed rules and ends on force card, see also p. 512 and also p. 550 for ideas by "Eddie" Cowles and Karl Fulves see also "Introduction" (Karl Fulves, 2001),
also published as "Hex Squared" (Karl Fulves, 1980)
1971 The Pallbearers Review Vol. 5-8 (Vol. 7 No. 1) 466
Unknown 10-20 Force 1971 The Pallbearers Review Vol. 5-8 (Vol. 7 No. 1) 467
Unknown 21 Force shown to Garcia by Marconick, credited to Marlo in reference see also "Million Dollar Card Secrets" (Jon Racherbaumer (reviewer), 1994) 1972 Million Dollar Card Secrets 44
Dai Vernon & Harry Lorayne & Bruce Cervon Amazing Prediction two cards, some dealing and counting 1973 Rim Shots 52
Edward G. Brown The Card at a Selected Number to force a card, with variations 1973 The Card Magic of Edward G. Brown 187
Edward G. Brown A Card Chosen by Calculation various mathematical forces 1973 The Card Magic of Edward G. Brown 192
Stephen Minch The Yin-Empress and the Hermit of Yang twelve cards, two are predicted 1974 The Book of Thoth 10
Stephen Minch Towering Prediction cards are laid out and spectator follows instruction from a tape recorder see also "Stacks" (Thomas Alan Waters, 1987) 1974 The Book of Thoth 31
Stephen Minch Fortunes of a Wise Fool based on an idea by Ed Mellon, matrix force see also "Days of Force" (Mel Stover, 1945),
varied by "Quintasense" (Thomas Alan Waters, 1982)
1974 The Book of Thoth 41
Martin D. Kruskal The Kruskal Principle also with two deck, described by Martin Gardner, see p. 985 for references to Ibidem 1975 The Pallbearers Review Vol. 9-10 (Vol. 10 No. 8) 967
George Sands Lucky 13 prime principle force, small packet counted to named number until only one card remains see also "Prime Force" (George Sands, 2000),
"PATEO Variation" (Karl Fulves, 2000),
"Lucky 13 Force" (George Sands, 2004),
varied by "Prime Time" (George Sands, 1975),
"Prime Choice" (George Sands, 1978),
"Prime Choice - E.S.P." (George Sands, 1978),
"Reverse Bank Nite" (George Sands, 1978),
"The Eliminator" (Nick Trost, 1997)
1975 The Pallbearers Review Vol. 9-10 (Vol. 10 No. 10) 1035
George Sands Prime Time all clubs in packet, counting procedure, King always remains inspired by "Lucky 13" (George Sands, 1975) 1975 The Pallbearers Review Vol. 9-10 (Vol. 10 No. 10) 1039
Unknown 10-20 Force 1976 Kabbala - Volume 3 (Vol. 3 No. 2) 26
Nick Trost Predicting One of Six Cards Matchbook moved from card to card on row of six 1976 Subtle Card Magic: Part Two 13
Unknown Twenty-Thirty Force 1978 51 Faces North 8
George Sands Prime Choice "Two Tricks"
packet of thirteen cards, selection is the last one face-down after counting procedure
inspired by "Lucky 13" (George Sands, 1975) 1978 The Chronicles (Issue 8) 1137
Jerry Mentzer Gag Revelation any number from 6-9 1979 Card Cavalcade Finale 95
Harry Lorayne A Prediction "Pathway" mathematical dealing thing in which spectator sorts red and blacks to force himself a card 1979 Quantum Leaps 53
Unknown Digit-Add Force 1980 The Elegant Card Magic of Father Cyprian 36
Karl Fulves Hex Squared 4x4 layout, spectator moves around according to fixed rules and ends on force card varied by "The Square Ring" (Sam Schwartz & Karl Fulves, 1980),
"Forced March" (Sam Schwartz, 1980),
also published as "Hex Squared" (Karl Fulves, 1971)
1980 Curioser 44
Sam Schwartz Forced March 4x4 layout, spectator moves around according to fixed rules and ends on force card inspired by "Hex Squared" (Karl Fulves, 1980) 1980 Curioser 54
Sam Schwartz & Karl Fulves The Square Ring 4x4 layout, spectator moves around according to fixed rules and ends on force card, only 3 instructions inspired by "Hex Squared" (Karl Fulves, 1980) 1980 Curioser 55
Unknown 10-20 Force adding digits 1981 Arcane (Issue 4) 34
Eddie Fields 10-20 Force Handling adding digits 1981 Arcane (Issue 4) 35
Unknown 10-20 Force cut and then cross total of the amount 1982 Mind, Myth & Magick (Section "Deckalogue") 218
Thomas Alan Waters Matrix Number Force with cards see also "Days of Force" (Mel Stover, 1945) 1982 Mind, Myth & Magick (Section "Deckalogue") 223
Thomas Alan Waters Quintasense some tarot cards are selected via the matrix force, reading, written on paper matches the selected cards inspired by "Fortunes of a Wise Fool" (Stephen Minch, 1974),
see also Stephen Minch's "Book of Thoth" p.41.,
"Days of Force" (Mel Stover, 1945)
1982 Mind, Myth & Magick (Section "Grymwyr") 279
Stewart James The Dilly-Dally Principle number force with playing cards 1983 Arcane (Issue 10) 124
Stewart James Polychromatic Wheel strange force involving a wheel layout on the table 1983 Arcane (Issue 10) 125
Max Maven* Triskadekaphobia forcing the number thirteen with cards see also "Never Odd or Even" (Philip T. Goldstein, 2002) 1984 The Collected Almanac (Vol. 2 No. 23&24) 238
Unknown Cross Sum Force nine force 1984 Fork Full of Appetizers - Book 2 87
Unknown Automatic Placement Force 1985 Best of Friends - Volume II 104
Tom Craven Expanded 10-20 Force for two cards 1985 Best of Friends - Volume II 521
Unknown Miscellaneous Forces - forcing four cards with (re)dealing
- odd-even number of things to force one of two spectators (matches or corners of newspaper)
1985 The Fred Braue Notebooks (Issue 1) 30
Paul Rosini Four Ace Repetitive cross sum force to find four aces, count-down on last ace (1940) 1985 The Fred Braue Notebooks (Issue 3) 2
Frederick Braue Three Pile Prediction counting and piles to force ninth card from top (1944)
- As a Location
1985 The Fred Braue Notebooks (Issue 5) 3
Dai Vernon & Alex Elmsley The Rendezvous Force mathematical force, Penelope's Principle with Klondike instead of faro shuffle 1987 Magical Arts Journal (Vol. 1 No. 8) 15
Dai Vernon & Alex Elmsley The Rendezvous Force mathematical force, Penelope's Principle with Klondike instead of faro shuffle see also "Pact Man" (Karl Fulves, 1996) 1988 The Vernon Chronicles - Volume 2 119
Unknown Clock Force 1989 The Secrets of Brother John Hamman 128
Unknown The 21 Card Force see also "21 Force" (1972) 1989 The Trapdoor - Volume Two (Issue 29) 522
George Lawrence Mathematical Force 1991 The Olram File (Issue 6) 3
Unknown The Ten-to-twenty Force mathematical principle 1994 Card College - Volume 1 90
Basil Horwitz Lowest Card Force deck cut in piles, top cards removed, lowest card thought-of 1994 New Sorcerer (Vol. 1 No. 6) 7
Lewis Jones Stranger spectator spells personal information to arrive at card 1997 Apocalypse Vol. 16-20 (Vol. 20 No. 4) 2775
Unknown The Ten-to-Twenty Force 1997 The Card Magic of Nick Trost 188
Karl Fulves Dealing Force to place card at thought-of number in five-card packet 1997 The Vampire Papers 131
George Sands Prime Number Packet Principle Packet of cards with prime number of cards, think of any integer n, flip over every nth card in succession, forces the remaining card 1997 Effortless Card Magic 108
Karl Fulves PATEO Variation force done by two spectators, magician's choice on final decision inspired by PATEO (Roy Baker, Baker's Bonanza, p. 38),
see also "Lucky 13" (George Sands, 1975)
2000 Lost Vampire Secrets 184
George Sands Prime Force see also "Lucky 13" (George Sands, 1975) 2000 Lost Vampire Secrets 202
Jim Steinmeyer & George Sands The Five Card Mix forcing a card from 5, see also George Sands "Prime Time" 2002 Impuzzibilities 21
Alan Wakeling & Jim Steinmeyer one rule of Matrix poker sixteen card matrix, cards chosen, they're predicted 2003 Artificial conclusions 28
George Sands Lucky 13 Force one of five objects see also "Lucky 13" (George Sands, 1975) 2004 Under Tension 18
Basil Horwitz Lowest Card Force deck cut in piles, top cards removed, lowest card thought-of 2004 The Mental Magick of Basil Horwitz - Volume 5 57
Karl Fulves & Stewart James Stax Fax stacks that force numbers, see also p. 68 2005 Clockwork 45
S. H. Paine Paine Set-Up for a number force, 14-15 2005 Clockwork 45
Jim Steinmeyer & Stewart James Five Cards on the March mathematical spelling trick with row of five coins, based on Stewart James "Stranger in a Strange Land" varied by "A Bird in the Hand" (Steve Mayhew, 2011) 2006 Further Impuzzibilities 10
Nick Trost & Tom Craven The Couple's Lucky Number two cards are forced via number procedures 2008 Subtle Card Creations - Volume 1 46
Billy O'Connor Ten-Twenty Force 2008 Subtle Card Creations - Volume 1 127
Billy O'Connor Ten-Twenty Force 2008 Subtle Card Creations - Volume 1 292
Jim Steinmeyer Force Six circle layout to force 6 2010 Subsequent Impuzzibilities 23
Jim Steinmeyer Force Ten circle layout to force 10 2010 Subsequent Impuzzibilities 24
Jim Steinmeyer Equivoque: The Full Deck Fandango verbal force of 7 of Clubs with deck using spelling 2013 Ensuing Impuzzibilities 12
Jim Steinmeyer Equivoque: The Tin Can Phone nine of Hearts forced, using cans with string 2013 Ensuing Impuzzibilities 14
Jim Steinmeyer The Irresistible Force from three cards (Six, Seven, Queen) the Seven is forced via counting procedure 2015 Devilish Impuzzibilities 7
Robert E. Neale Wheel Force Elimination force from five objects starting with the one selected by a spectator. 2015 Semi-Automatic Card Tricks - Volume 10 39
Steve Beam Sweet Spot Range Force where spectator makes all the choices to arrive at force card. 2015 Semi-Automatic Card Tricks - Volume 10 206
Steve Beam Small Prize Winner Range Force where spectator makes all the choices to arrive at force card. 2015 Semi-Automatic Card Tricks - Volume 10 209
Steve Beam Nuclear Force Range Force where spectator makes all the choices to arrive at force card. see also "New-and-Clear Force" (Jon Racherbaumer, 2016) 2015 Semi-Automatic Card Tricks - Volume 10 211
Steve Beam Ranger School Several versions of a range force where spectator makes all the choices to arrive at force card. 2015 Semi-Automatic Card Tricks - Volume 10 213
Steve Beam Predicting the Past Routine where the magician predicts a card to be freely chosen by a member of the audience. 2015 Semi-Automatic Card Tricks - Volume 10 217
Steve Beam One in a Bazillion Since magician claims he didn't bring any cards, a card is constructed in the mind of a volunteer. It is shown reversed in a pictured spread of playing cards, and then removed from magician's pocket. 2015 Semi-Automatic Card Tricks - Volume 10 220
Steve Beam Blankety Blank Blank (both sides) deck used to create a playing card. That card is removed from the pocket and it appears (prints) in the deck. 2015 Semi-Automatic Card Tricks - Volume 10 225
Gordon Bean One Out of Three Combination of concept used to force a card. 2015 Semi-Automatic Card Tricks - Volume 9 45
Marty Kane Four Suits, Forsooth! Mathematical four-ace production see also "The Curiouser Count" (Steve Beam, Semi-Automatic Card Tricks, Vol. 5, 2004),
"Curious Count" (Fred G. Taylor, 1968),
"The Lower 48" (Steve Beam, 2015)
2015 Semi-Automatic Card Tricks - Volume 9 172
Roberto Giobbi 10/20 Force Variation 2016 Hidden Agenda (Section "July 1") 189
Roberto Giobbi & Anthony Norman Deal Force with small numbers that are named see also "Basic Card Technique" (Anthony Norman, 1948) 2016 Hidden Agenda (Section "Nov 8") 321
Jon Racherbaumer New-and-Clear Force Ace-through-King set-up, card chosen by first chosen value then suit, card not really forced but under control inspired by "Variation: Beam’s Artificial Nuclear Force" (David Solomon, Solomon's Bulletin #81, Jan. 2016,
see also "Nuclear Force" (Steve Beam, 2015)
2016 Facsimile (Issue 5) 37