74 entries in Numbers / Number Forces / Only Calculation
Creators Title Comments & References Year Source Page AA Categories
Oswald Rae Number Force sum is forced
1928 Sub Rosa 71
Unknown Mathematical Trick Al Baker's date addition force, result predicted with digits of four cards
Related to 1928 Card Tricks You Will Do 26
Unknown Number Trick No. 44, date addition force, using simple dealing into four piles to get the forced number to top of four piles
Related to 1935 Card Tricks that are Easy to Learn, Easy to Do 41
Unknown Number Addition Force
1936 Card Manipulations (Issue 5) 156
Unknown To Force the Number 9
1938 Greater Magic 198
Franklin M. Chapman Match-Ic Numbers number appears on head of match, mental calculation
1939 Chap's Scrapbook (Vol. 2 No. 3) 4
Oscar "Oscarelli" Rey Das fabelhafte Gedächtnis (Ein kleiner Stammtischscherz) mathematical trick, 1089 to force name in phone book
1939 Hokus Pokus (Vol. 1 No. 3&4) 21
A. F. Vickland A Match for You “thought-of” number (after a mathematical process) appears on head of a burnt match, mathematical force of four
1941 Original Ideas in Magic 5
Alvin R. Plough Gaglet calculation and multiple outs
1943 The Phoenix 1-50 (Issue 36) 148
L. Vosburgh Lyons Nine forcing nine
Also published here 1944 The Phoenix 51-100 (Issue 53) 217
L. Vosburgh Lyons Number Force forcing nine
1945 Miracles in Mentalism and Psychic Experimentation 21
Richard Himber Transcendental Book Test using mathematical addition force
Also published here 1945/27 Tarbell Course in Magic — Volume 4 192
Unknown Addition Force number variable
1945/27 Tarbell Course in Magic — Volume 4 195
Scurti The Magician For Radio, Television, or Newspaper calculation trick
Apr. 1949 Grant's Inner Circle Magazine (Vol. 1 No. 7) 15
U. F. Grant Another 15 Diamonds Gag gag with Fifteen of Diamonds, calculation
May 1949 Grant's Inner Circle Magazine (Vol. 1 No. 8) 10
Bob Somerfeld Cut-Witted number force, from one to ten
1950 Ireland's Yearbooks (Issue Yearbook 1950) 3
Harry Houdini, Nate Leipzig, Harry Levine Affinity in Numbers No. 110, after some mental calculation, the two digits of the total match the values of two selected cards
Variations 1950 Scarne on Card Tricks 212
Jack Yates Astral Digit after some easy arithmetics, spectator and performer have the same number written on a slate
1954 Minds in Close-Up 17
Unknown Predicting a Number Think of a number, do some operations, predict final result
1956 Mathematics, Magic And Mystery 159
Unknown, T. O'Connor Sloane The Mysteries of Nine Number forces using the number nine (e.g. 1089), includes variation by T. O'Connor Sloane using money
Related to 1956 Mathematics, Magic And Mystery 163
Unknown Digital Roots Number force using digital roots
Related to 1956 Mathematics, Magic And Mystery 164
Unknown Persistent Root Number force using digital roots of nine
Related to 1956 Mathematics, Magic And Mystery 165
Unknown Guessing Someone's Age Using digital roots to estimate the age of someone
Related toVariations 1956 Mathematics, Magic And Mystery 166
Chan Canasta Oops 1: Fifty years of history Numerical force to select a particular card on a grid of twenty cards, based on an important year to the spectator
1966 Book of Oopses 4
Chan Canasta Oops 9: Look out for a number 1089 force, prediction is 6801 on the page, must flip upside down to reveal prediction
Related to 1966 Book of Oopses 20
John Bragoli Roulette Force cross total of three numbers
1969 The Art of Close-Up Magic — Volume 2 71
Paul Siegel Vision Diabolique performer is blindfolded, the reveals number written on a slate, name and drawing drawn on blank card
1972 Doorway to Delusion 6
Paul Siegel Number Force limited pool of numbers, spectator's hold up hands with outstretched fingers, two-digit number is created
1972 Doorway to Delusion 9
Burling Hull Volta's "All-Fair" Dictionary Feat numbers written on card or slate are used to arrive at sentence in dictionary, forcing a range of nine numbers
1976 The Amazing World of Mentalism 61
Burling Hull The Performer Presents a Number Test row of numbers written on slate, a number arrived at by calculation, numbers wiped away and calculated number appears (1089)
1976 The Amazing World of Mentalism 86
Unknown 1089 and All That ideas for 1089 force
1976 Mistress of Pentertain 26
Ken De Courcy Are You Kidding? "how many children" presentation for prediction of number 5
Inspired by
  • effect in Royal V. Heath's "Mathemagic"
1976 Mistress of Pentertain 28
Will Dexter Number Force
July 1978 Intermagic (Vol. 5 No. 2) 64
Edmund Rowland Zifferntricks twelve puzzles and tricks with numbers
Also published here
  • Abracadabra #576-579, Feb. 1957
Nov. 1980 Intermagic (Vol. 7 No. 3) 106
Ken De Courcy The Invisible Die and Card Trick card chosen via calculation with invisible dice, spectator sits on that card
Inspired by
  • card on chair in The Quaker Oat Book of Magic
  • "The Invisible Die" (Ken de Courcy, Magigram)
1980 Cards in Cabaret 9
Dr. Stanley Jaks Hinter meiner Tafel with number range force (using spectator's age) and three-way-out
Also published here
  • "Behind My Blackboard" (The Gen, May 1959)
Dec. 1981 Intermagic (Vol. 8 No. 4) 154
Thomas Alan Waters Symbo-Chart off beat revelation of a chosen ESP sign, 1089 force
1983 Mind, Myth & Magick (Issue Psychl) 510
Samuel Taylor Coleridge, Karl Fulves Think of a Number No. 9, spectator does calculation procedure and adds value of change in pocket, performer knows value of change
1983 Self-Working Number Magic 11
Richard Himber Transcendental Book Test No. 98, two page numbers selected and added, that number opened in third book and first word divined, using mathematical addition force
Also published here 1983 Self-Working Number Magic 134
Unknown 1089
1985 The Fred Braue Notebooks (Issue 1) 25
Steve Beam 6801 Prediction comedy prediction with a twist, 1089 force
Related to 1986 The Trapdoor — Volume One (Issue 13) 222
Steve Rogers Central Limit forcing a range of numbers, open prediction application
Aug. 1987 Apocalypse (Vol. 10 No. 8) 1383
L. Vosburgh Lyons, Rudolf Braunmüller, R. Machford Zahlenforcen: Das Neuner-Prinzip
Also published here Oct. 1987 Intermagic (Vol. 13 No. 1) 19
Karl Fulves Smart Money No. 92, calculation with date on any coin with result in number nine, this book is a force-book with "of" as every ninth word at the start of each chapter
1989 Self-Working Coin Magic 135
Unknown Confusing the Mathematician mathematical force using face of a watch
1992/1999 Psychokinetic Time 23
Steve Dusheck No Apologies result of calculation appears on business card
1994 Dusheck's Close-Up Magic 1
Karl Fulves Digit Tell Us "Thoughts on a classic number stunt"
three digit number, taken reversed and subtracted, fool-proof method
1995 The Fine Print (Issue 1) 7
Karl Fulves Application letters correspond to letters for fun number reveal
Inspired by 1995 The Fine Print (Issue 1) 9
John Mulholland, Karl Fulves Highway Robbery letters correspond to letters for fun number reveal
Related to
  • Demonstration of "Affinity of Letters and Figures" (Linking Ring, March 1933)
  • Informant (Karl Fulves, 1995)
1995 The Fine Print (Issue 1) 10
Mel Bennett An 8-Cylinder Deal forcing the number eight
1995 The Fine Print (Issue 1) 14
Unknown Think of a Number No. 10, number thought-of, after some calculation the result is always six
1995 Easy Magic 13
Karl Fulves Beyond Numbers No. 23, page and word selected with calculation procedure
1995 Easy Magic 30
James Baker You've Already Won! calculation that always results in the number five, predicted with five dollar bills
1998 Underworld (Issue 9) 124
Philip T. Goldstein Fingers Digit Force limited range of numbers possible
Also published here 1999 Theater of the Mind 238
Chris Wardle Compatibility test with couple, woman writes a number down and man does some additions, both end up with same number
1999 Syzygy (Vol. 5 No. 2) 359
Chris Wardle Great Minds Think Alike one person writes down a four-figure number, another makes calculations with years and dates (extension of Al Baker's date addition force), the numbers match
Inspired by
  • earlier version using Tarot Cards by Chris Wardle in Abracadabra
2000 Ten Mysteries 16
Tom Johnston Water to Wine six bottles with water, one chosen with calculation and counting procedure, it contains wine, "did not appear in the first edition of this booklet"
Also published here
  • Alchemy, Vol. 2 No. 1
2000 Ten Mysteries 24
Steve Beam Steve's Nothing-To-Do-With-Canning's-Idea Prediction number is formed by simple arithmetics and predicted with a coin
2002 Semi-Automatic Card Tricks — Volume 4 210
Peter Duffie, Robin Robertson Principle of Nine adding digits and subtracting from original number always is a multiple of nine
  • The basic estimation principle
  • The Count-Back Force
  • The Less-counting principle
2003 Card Conspiracy — Vol. 2 79
Karl Fulves Cooked Book page number chosen via calculation method, can only be one of two numbers
2006 Prolix (Issue 1) 66
Stewart Judah My # Yours number prediction by both performer and spectator, only calculation
2007 Prolix (Issue 3) 202
Tony Bartolotta, Karl Fulves High School Hijinks using school textbooks
2007 Prolix (Issue 3) 208
Ken De Courcy A Real Pocket Trick comedy presentation for number force for five
Inspired by
  • a number force in Annemann's "202 Method of Forcing"
2008 Prolix (Issue 5) 316
Karl Fulves Numismatica "they've got your number"
after some calculation, one of five force numbers is the outcome
Variations 2008 Xtra Credit (Issue 2) 6
Marty Kane Cursed by an Evil Spell after spelling on fingers a number is divined
Also published here 2008 Noteworthy 50
Jim Steinmeyer The Three Book Experiment mathematical calculations to arrive at page number
Inspired by
  • "The Great Book Test" (The Magic of Robert Harbin)
  • U. F. Grant's marketed book test
Also published here
2009 A Tribute to Robert Harbin 18
Marty Kane Cursed by an Evil Spell after spelling on fingers a number is divined
Inspired byAlso published here 2010 Semi-Automatic Card Tricks — Volume 8 220
Marty Kane, Steve Beam Finger Flinger alternate handling
Inspired byRelated to 2010 Semi-Automatic Card Tricks — Volume 8 221
Richard Ganstwig The Most Interesting Man number force, forcing a name on a list
2010 Miracles of my Friends II 35
Steve Mayhew A Bird in the Hand audience selects finger through counting procedure - middle finger
Inspired byRelated to 2011 Full Frontal Mayhew 13
Karl Fulves Potter's Index book test with borrowed Harry Potter book, calculations on paper required
2011 Prolix (Issue 9) 580
Jim Steinmeyer The Three Book Experiment
  • Conjuring
mathematical calculations to arrive at page number
Also published here Feb. 2011 Genii (Vol. 74 No. 2) 26
Steve Beam Fingered Audience selects finger through counting procedure. Comedy revelation.
Inspired by 2015 Semi-Automatic Card Tricks — Volume 9 186
Alexander de Cova Die unvollendete Zahlenforce number force, range force
2018 Arbeitsbuch Wäscheklammer Austausch 31