personality test \n face-up/face-down prediction of number of cards, weird, cato related, personality type presentation \n bob hummer \n personality test \n bob hummer \n personality quest \n lorenz schär \n strike out \n steve beam \n personalized personality test \n steve beam \n the randomized lie detector \n steve beam
1945
3 pets Bob Hummer

Personality Test

face-up/face-down prediction of number of cards, weird, CATO related, personality type presentation

hummer's 18 card mystery \n spectator takes eighteen cards and turns over the top two cards and cuts the pile, that step is repeated as often as he likes, then the performer takes the cards behind his back and divines the amount of reversed cards, see collected secrets for links to variations \n bob hummer \n hummer's 18 card mystery \n bob hummer
1946
face up face down mysteries Bob Hummer

Hummer's 18 Card Mystery

spectator takes eighteen cards and turns over the top two cards and cuts the pile, that step is repeated as often as he likes, then the performer takes the cards behind his back and divines the amount of reversed cards, see Collected Secrets for links to variations

hummer's swindle \n spectator takes sixteen cards and turns over the top two cards and cuts the pile behind his back, that step is repeated as often as he likes, then the performer takes the cards behind his back and without looking reverses all cards back in order \n bob hummer \n hummer's swindle \n bob hummer
1946
face up face down mysteries Bob Hummer

Hummer's Swindle

spectator takes sixteen cards and turns over the top two cards and cuts the pile behind his back, that step is repeated as often as he likes, then the performer takes the cards behind his back and without looking reverses all cards back in order

the lonely card \n cato routine, cards turned face up, performer takes packet behind back and reverses all cards except selection \n bob hummer \n the lonely card \n bob hummer \n return of the lonely card \n peter duffie \n robin robertson
1946
face up face down mysteries Bob Hummer

The Lonely Card

CATO routine, cards turned face up, performer takes packet behind back and reverses all cards except selection

the little moonies \n cato routine, cards with moon faces printed on them, one way they are smiling held the other way the are sad, spectator marks two cards on the pack and cuts them in the deck, performer takes cards behind back, all moons are in smiling orientation except marked two \n bob hummer \n the little moonies \n bob hummer \n the little moonies \n bob hummer
1946
face up face down mysteries Bob Hummer

The Little Moonies

CATO routine, cards with moon faces printed on them, one way they are smiling held the other way the are sad, spectator marks two cards on the pack and cuts them in the deck, performer takes cards behind back, all moons are in smiling orientation except marked two

color scheme \n no. 47, cards mixed face up/down, spectator separates face up/down, as well as red/black \n oscar weigle \n color scheme \n oscar weigle \n still scheming \n peter duffie
1950
scarne on card tricks Oscar Weigle

Color Scheme

No. 47, Cards mixed face up/down, spectator separates face up/down, as well as red/black

hummer's reversal mystery \n cato trick, magician can name correctly number of face up cards after cut and turn over procedure. oscar weigle variation: colors are also separated \n bob hummer \n oscar weigle \n the little moonies \n bob hummer \n stitches in time \n stephen tucker
1956
mathematics, magic and mystery Bob Hummer, Oscar Weigle

Hummer's Reversal Mystery

CATO trick, magician can name correctly number of face up cards after cut and turn over procedure. Oscar Weigle variation: colors are also separated

the little moonies \n cato trick, uses cards with drawing of either smiling/frowning face. two cards are marked on the back and after mixing, shown to be the only ones frowning while other cards are smiling \n bob hummer \n the little moonies \n bob hummer \n hummer's reversal mystery \n bob hummer \n oscar weigle
1956
mathematics, magic and mystery Bob Hummer

The Little Moonies

CATO trick, uses cards with drawing of either smiling/frowning face. Two cards are marked on the back and after mixing, shown to be the only ones frowning while other cards are smiling

hummer addition \n spectator reverses some cards, below table magician reverses more so named total is achieved, as kicker all are one color \n harry lorayne \n face up prediction \n bob hummer
1965
my favorite card tricks Harry Lorayne

Hummer Addition

spectator reverses some cards, below table magician reverses more so named total is achieved, as kicker all are one color

all but one \n cato red black separation routine, p. 241 for further reference \n robert page \n p. 240 for variation by walter setty \n the lonely card \n bob hummer
1968
the pallbearers review vol. 1-4 Robert Page

All But One

CATO red black separation routine, p. 241 for further reference

paradox papers \n paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with cards, steve shimm suggestion, tapestry handling, see also p. 521 for gene nielson handling, h. e. dudeney \n martin gardner \n henry dudeny puzzle from "modern puzzles" (1926) \n news test \n edmund rowland \n paradox papers \n martin gardner \n wraparound \n karl fulves \n foldover notes \n karl fulves \n paper folding note \n karl fulves \n paradox redux \n philip t. goldstein \n folding numbers \n jack avis \n the core \n pit hartling \n disparity \n ramón riobóo
1971
the pallbearers review vol. 5-8 Martin Gardner

Paradox Papers

paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with cards, Steve Shimm suggestion, tapestry handling, see also p. 521 for Gene Nielson handling, H. E. Dudeney

hummer - 4 \n four cards mixed face up face down by spectator, values of face up cards predicted, cato \n charles hudson \n number hummer \n robert e. neale
1972
epilogue Charles Hudson

Hummer - 4

four cards mixed face up face down by spectator, values of face up cards predicted, CATO

number hummer \n four cards mixed face up face down by spectator, values of face up cards divined or predicted \n robert e. neale \n "baby hummer" (charles hudson, linking ring) \n hummer - 4 \n charles hudson \n toddler \n philip t. goldstein \n robert e. neale
1973
the pallbearers review vol. 5-8 Robert E. Neale

Number Hummer

four cards mixed face up face down by spectator, values of face up cards divined or predicted

color scheme \n with face-up/face-down mix of twenty cards behind spectator's back \n oscar weigle \n color scheme \n oscar weigle \n addenda \n karl fulves \n further ideas \n martin gardner \n clayton rawson \n this is it \n bob hummer
1974
the pallbearers review vol. 9-10 Oscar Weigle

Color Scheme

with face-up/face-down mix of twenty cards behind spectator's back

further ideas \n \n martin gardner \n clayton rawson \n color scheme \n oscar weigle
1974
the pallbearers review vol. 9-10 Martin Gardner, Clayton Rawson

type casting \n face-up/face-down prediction of number of cards, weird, cato related \n karl fulves \n 5-4 \n karl fulves \n personality test \n bob hummer
1979
four color problems Karl Fulves

Type Casting

face-up/face-down prediction of number of cards, weird, CATO related

symbolike \n two sets of esp cards are placed face-up and face down into a pile and are further mixed, when divided into two piles both have same amount of face up cards, when assembled again five esp cards are face-up and five face-down \n howard a. adams
1979
oicufesp Howard A. Adams

Symbolike

two sets of ESP cards are placed face-up and face down into a pile and are further mixed, when divided into two piles both have same amount of face up cards, when assembled again five ESP cards are face-up and five face-down

1979

OICUFESP
(Issue 2 - ten MORE brand new esp card miracles)

lone impromptu \n cards mixed face-up and face-down, performer rightens them behind back except for selection \n karl fulves \n the lonely card \n bob hummer
1980
color quik Karl Fulves

Lone Impromptu

cards mixed face-up and face-down, performer rightens them behind back except for selection

hummer's 18 card mystery \n spectator takes eighteen cards and turns over the top two cards and cuts the pile, that step is repeated as often as he likes, then the performer takes the cards behind his back and divines the amount of reversed cards \n bob hummer \n hummer's 18 card mystery \n bob hummer \n still scheming \n peter duffie \n informant \n karl fulves \n 37 threes \n karl fulves \n the rule for red \n karl fulves
1980
bob hummer's collected secrets Bob Hummer

Hummer's 18 Card Mystery

spectator takes eighteen cards and turns over the top two cards and cuts the pile, that step is repeated as often as he likes, then the performer takes the cards behind his back and divines the amount of reversed cards

hummer's swindle \n spectator takes sixteen cards and turns over the top two cards and cuts the pile behind his back, that step is repeated as often as he likes, then the performer takes the cards behind his back and without looking reverses all cards back in order \n bob hummer \n hummer's swindle \n bob hummer
1980
bob hummer's collected secrets Bob Hummer

Hummer's Swindle

spectator takes sixteen cards and turns over the top two cards and cuts the pile behind his back, that step is repeated as often as he likes, then the performer takes the cards behind his back and without looking reverses all cards back in order

the lonely card \n cato routine, cards turned face up, performer takes packet behind back and reverses all cards except selection \n bob hummer \n the lonely card \n bob hummer \n all but one \n robert page \n lone impromptu \n karl fulves
1980
bob hummer's collected secrets Bob Hummer

The Lonely Card

CATO routine, cards turned face up, performer takes packet behind back and reverses all cards except selection

the little moonies \n cato routine, cards with moon faces printed on them, one way they are smiling held the other way the are sad, spectator marks two cards on the pack and cuts them in the deck, performer takes cards behind back, all moons are in smiling orientation except marked two \n bob hummer \n the little moonies \n bob hummer
1980
bob hummer's collected secrets Bob Hummer

The Little Moonies

CATO routine, cards with moon faces printed on them, one way they are smiling held the other way the are sad, spectator marks two cards on the pack and cuts them in the deck, performer takes cards behind back, all moons are in smiling orientation except marked two

personality test \n face-up/face-down prediction of number of cards, weird, cato related, personality type presentation \n bob hummer \n personality test \n bob hummer \n type casting \n karl fulves \n triple humdinger \n peter duffie
1980
bob hummer's collected secrets Bob Hummer

Personality Test

face-up/face-down prediction of number of cards, weird, CATO related, personality type presentation

sum hummer \n ace to ten packet, mixed face up and down by spectator, number of reversed cards and their total predicted, cato principle \n charles hudson \n a couple of pages \n harry lorayne \n sum hummer explored \n richard vollmer
1982
best of friends Charles Hudson

Sum Hummer

Ace to Ten packet, mixed face up and down by spectator, number of reversed cards and their total predicted, CATO principle

the royal computer \n kings and queens are given to spectator for cato procedure, two card turned over, two previous selections \n charles hudson \n spur of the moment \n harry lorayne
1982
best of friends Charles Hudson

The Royal Computer

Kings and Queens are given to spectator for CATO procedure, two card turned over, two previous selections

the dating game \n no. 3, spectator turns cards over, at the end only a king-queen pair is face-up \n karl fulves \n odd color out \n karl fulves
1984
more self-working card tricks Karl Fulves

The Dating Game

No. 3, spectator turns cards over, at the end only a King-Queen pair is face-up

odd color out \n no. 19, cards shuffled face-up/face-down via cato by spectator, two selections made, performer handles cards and all face-up cards are red with a black selection and vice versa \n karl fulves \n the dating game \n karl fulves
1984
more self-working card tricks Karl Fulves

Odd Color Out

No. 19, cards shuffled face-up/face-down via CATO by spectator, two selections made, performer handles cards and all face-up cards are red with a black selection and vice versa

clubbed \n in one half selection turns over, in other half all cards from the same suit are found reversed \n aldo colombini
1985
the trapdoor — volume one Aldo Colombini

Clubbed

in one half selection turns over, in other half all cards from the same suit are found reversed

paradox papers \n no. 9, paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with card values on paper or card layout (chosen card turned over is only odd-colored at the end) \n martin gardner \n paradox papers \n martin gardner
1985
self-working paper magic Martin Gardner

Paradox Papers

No. 9, paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with card values on paper or card layout (chosen card turned over is only odd-colored at the end)

toddler \n packet mixed face-up/face-down, values added up is force number \n philip t. goldstein \n robert e. neale \n "baby hummer" (charles hudson, linking ring) \n number hummer \n robert e. neale
1989
fifth Philip T. Goldstein, Robert E. Neale

Toddler

packet mixed face-up/face-down, values added up is force number

parity prophet \n cards dealt in pairs, one turned over, again dealt in pairs, cards on both side of reversed card are mates or predicted, gemini twins relation \n karl fulves
1993
rigmarole Karl Fulves

Parity Prophet

cards dealt in pairs, one turned over, again dealt in pairs, cards on both side of reversed card are mates or predicted, Gemini Twins relation

principles and deceptions \n "an easy trip through the arithmetical principles of card magic - part 4"
- two unique principles of bob hummer
- principle one
- principle two (cato) \n peter duffie
1993
profile Peter Duffie

Principles and Deceptions

"An Easy Trip Through The Arithmetical Principles Of Card Magic - Part 4"

beyond hummer \n four cards, selection is only one reversed after some procedure \n persi diaconis \n beyond hummer \n persi diaconis
1993
card file Persi Diaconis

Beyond Hummer

four cards, selection is only one reversed after some procedure

day one \n date chosen by choosing some face-up and face-down cards from grid layout, looked up in diary, card noted there predicted, tapestry \n karl fulves \n three card tricks \n mel bennett
1994
crooked tales Karl Fulves

Day One

date chosen by choosing some face-up and face-down cards from grid layout, looked up in diary, card noted there predicted, tapestry

moves and removes \n marker moved on 3x3 layout, final card predicted, with 4x4 "sixteen card version" on p. 30 \n simon aronson \n martin gardner presents (1993), p. 149
1995
simply simon Simon Aronson

Moves and Removes

marker moved on 3x3 layout, final card predicted, with 4x4 "Sixteen Card Version" on p. 30

still scheming \n play it straight triumph type of effect with cato procedure, use half a deck \n peter duffie \n color scheme \n oscar weigle \n hummer's 18 card mystery \n bob hummer
1997
effortless card magic Peter Duffie

Still Scheming

Play it Straight Triumph type of effect with CATO procedure, use half a deck

paradox redux \n "dot com - tricks and stunts with numbers"
tapestry parity principle, credit information, 4x4 number matrix, 19 or 61 \n philip t. goldstein \n paradox papers \n martin gardner
1998
the fine print Philip T. Goldstein

Paradox Redux

"Dot Com - Tricks and stunts with numbers"
tapestry parity principle, credit information, 4x4 number matrix, 19 or 61

cut-rate hummer \n "dot com - tricks and stunts with numbers"
twenty cards spread, about five are reversed, spectator remembers one and turns it over, something done behind back by performer, selection located and other reversed cards are now aces \n karl fulves \n hofzinser + math \n karl fulves
1998
the fine print Karl Fulves

Cut-Rate Hummer

"Dot Com - Tricks and stunts with numbers"
twenty cards spread, about five are reversed, spectator remembers one and turns it over, something done behind back by performer, selection located and other reversed cards are now Aces

intuitive \n cards with colored spots and numbers, some selected, a prediction is matched \n peter duffie \n triple humdinger \n peter duffie
1998
five times five — scotland Peter Duffie

Intuitive

cards with colored spots and numbers, some selected, a prediction is matched

letter perfect \n spectator mixes stack of alphabet cards face up/down, the face down cards spell his/her name \n david regal
1999
close-up & personal David Regal

Letter Perfect

Spectator mixes stack of alphabet cards face up/down, the face down cards spell his/her name

37 threes \n "dot com - tricks and stunts with numbers"
small packet, spectator cuts and turns over pairs, then two red threes are only reversed cards, comedy prediction is shown to fit \n karl fulves \n hummer's 18 card mystery \n bob hummer \n informant \n karl fulves
1999
the fine print Karl Fulves

37 Threes

"Dot Com - Tricks and stunts with numbers"
small packet, spectator cuts and turns over pairs, then two red Threes are only reversed cards, comedy prediction is shown to fit

basic hummer \n baby hummer, four cards flipped face up and down, end with selection being the only one reversed. \n unknown \n basic hummer \n unknown \n baby hummer \n charles hudson
1999
cunning card miracles
Unknown

Basic Hummer

Baby Hummer, four cards flipped face up and down, end with selection being the only one reversed.

hummer - odd back \n basic hummer, but selected card is reversed and also odd-backed \n tom craven \n hummer - odd back \n tom craven
1999
cunning card miracles Tom Craven

Hummer - Odd Back

Basic Hummer, but selected card is reversed and also odd-backed

hofzinser + math \n aces shuffled reversed into packet, another card chosen, face-up/face-down mix, all cards right except a chosen ace but selection instead \n karl fulves \n "automatic ace triumph" (kuniyasu fujiwara, genii, may 2000) \n cut-rate hummer \n karl fulves \n surprise ace triumph \n reinhard müller
2000
latter day secrets Karl Fulves

Hofzinser + Math

Aces shuffled reversed into packet, another card chosen, face-up/face-down mix, all cards right except a chosen Ace but selection instead

symmetry \n comment on the fujiwara effect, two card location \n karl fulves \n "automatic ace triumph" (kuniyasu fujiwara, genii, may 2000)
2000
latter day secrets Karl Fulves

Symmetry

comment on the Fujiwara effect, two card location

Inspired by

"Automatic Ace Triumph" (Kuniyasu Fujiwara, Genii, May 2000)

hummer clean-up \n four cards, selection is only one reversed after some procedure \n tom craven \n "baby hummer" (charles hudson, linking ring) \n hummer clean-up \n tom craven
2000
card file two Tom Craven

Hummer Clean-Up

four cards, selection is only one reversed after some procedure

hummer - odd back \n selection also has odd back \n tom craven \n "baby hummer" (charles hudson, linking ring) \n hummer - odd back \n tom craven
2000
card file two Tom Craven

tomorrow's card \n no. 47, eight cards shuffled face-up/face-down, number of reversed cards and their identity predicted \n karl fulves \n "baby hummer" (charles hudson, linking ring)
2001
new self-working card tricks Karl Fulves

Tomorrow's Card

No. 47, eight cards shuffled face-up/face-down, number of reversed cards and their identity predicted

psychic map \n no. 69, fifteen cards in matrix layout on table, some are turned over, covered with newspaper, performer reaches underneath and adjusts, when newspaper is removed all face-up cards are red and vice versa \n karl fulves \n bob hummer
2001
new self-working card tricks Karl Fulves, Bob Hummer

Psychic Map

No. 69, fifteen cards in matrix layout on table, some are turned over, covered with newspaper, performer reaches underneath and adjusts, when newspaper is removed all face-up cards are red and vice versa

darn! i couldn't... \n four tens on table, three cards on each, cato ("leave or reverse"), aces are only cards reversed cards in the end \n harry lorayne \n "automatic ace triumph" (kuniyasu fujiwara, genii, may 2000) \n incredible flush control \n harry lorayne
2001
personal collection Harry Lorayne

Darn! I Couldn't...

four Tens on table, three cards on each, CATO ("leave or reverse"), Aces are only cards reversed cards in the end

Related to

"Automatic Ace Triumph" (Kuniyasu Fujiwara, Genii, May 2000)

a couple of pages \n sixteen cards mixed face up and down by spectator, number of reversed cards and their total predicted \n harry lorayne \n sum hummer \n charles hudson
2001
personal collection Harry Lorayne

A Couple of Pages

sixteen cards mixed face up and down by spectator, number of reversed cards and their total predicted

symbiotic \n sixteen cards shuffled face-up/face-down, aces are only cards reversed at the end, faro \n harry lorayne
2001
personal collection Harry Lorayne

Symbiotic

sixteen cards shuffled face-up/face-down, Aces are only cards reversed at the end, faro

spur of the moment \n two selections are only reversed cards in packet after cato procedure \n harry lorayne \n the royal computer \n charles hudson
2001
personal collection Harry Lorayne

Spur of the Moment

two selections are only reversed cards in packet after CATO procedure

another moment \n cato procedure with twelve-card packet, reversed cards at end are known, or total predicted, or... \n harry lorayne
2001
personal collection Harry Lorayne

Another Moment

CATO procedure with twelve-card packet, reversed cards at end are known, or total predicted, or...

triple humdinger \n face-up/face-down prediction of number of cards in packet, three predictions \n peter duffie \n personality test \n bob hummer \n intuitive \n peter duffie \n strike out \n steve beam
2001
cards by all means Peter Duffie

Triple Humdinger

face-up/face-down prediction of number of cards in packet, three predictions

automatic poker \n ten cards are "mixed" by spectator, then red-black separated or poker deal, pseudo-cato \n jim steinmeyer \n chapter 11 - pseudo-cato \n peter duffie \n robin robertson \n deal three \n jim steinmeyer
2002
impuzzibilities Jim Steinmeyer

Automatic Poker

ten cards are "mixed" by spectator, then red-black separated or poker deal, Pseudo-CATO

the rule for red \n different handling than cato, switching two cards \n karl fulves \n hummer's 18 card mystery \n bob hummer
2002
latter day secrets Karl Fulves

hummer principle (cato) \n explanation and credit information \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

thought process \n selection ends up reversed in packet \n peter duffie \n robin robertson \n cato by numbers \n roy walton
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

cato by numbers \n simplified \n roy walton \n thought process \n peter duffie \n robin robertson \n cato gets married \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Roy Walton

cato gets married \n kings and queens, in the end a matching pair ends up reversed \n peter duffie \n robin robertson \n cato by numbers \n roy walton \n cato gets married - again \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

CATO Gets Married

Kings and Queens, in the end a matching pair ends up reversed

cato gets married - again \n \n peter duffie \n robin robertson \n cato gets married \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

hummer plays poker \n packet mixed via cato, royal flush shows up at the end \n peter duffie \n robin robertson \n remote control poker \n peter duffie \n robin robertson \n two for the road \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

Hummer Plays Poker

packet mixed via CATO, Royal Flush shows up at the end

remote control poker \n royal flush shows up at the end \n peter duffie \n robin robertson \n hummer plays poker \n peter duffie \n robin robertson \n two for the road \n peter duffie \n robin robertson
2003
card conspiracy — vol. 1 Peter Duffie, Robin Robertson

degrees of freedom \n cato, koenig's tapestry, combo to produce royal flush \n john bannon \n folded discovery \n david solomon
2004
dear mr. fantasy John Bannon

Degrees Of Freedom

CATO, Koenig's Tapestry, combo to produce royal flush

perfect strangers \n cato, koenig's tapestry, prediction combo with rainbow packet \n john bannon \n imperfect strangers \n robin robertson \n strange but perfect \n jerry k. hartman
2004
dear mr. fantasy John Bannon

Perfect Strangers

CATO, Koenig's Tapestry, prediction combo with rainbow packet

postcards prediction \n cato, koenig's tapestry, prediction combo with postcards instead of playing cards \n william goodwin
2004
dear mr. fantasy William Goodwin

Postcards Prediction

CATO, Koenig's Tapestry, prediction combo with postcards instead of playing cards

the works \n explanation of cato principle and the koenig's tapestry fold (dudeney folding)
- first principles
- isolating target cards
- rlues of engagement
- the folding phase \n john bannon \n disparity \n ramón riobóo
2004
dear mr. fantasy John Bannon

The Works

explanation of CATO principle and the Koenig's Tapestry fold (Dudeney Folding)

chapter 11 - pseudo-cato \n intro, cato with turning three instead of two cards over, "cato preserves the face-up/face-down orientation while mixingthe positions. in contrast, pseudo-cato preserves the relative odd/even alternating positions while mixing their face-up/face-down orientation." \n peter duffie \n robin robertson \n automatic poker \n jim steinmeyer
2004
diamonds from coal Peter Duffie, Robin Robertson

Chapter 11 - Pseudo-CATO

intro, CATO with turning three instead of two cards over, "CATO preserves the face-up/face-down orientation while mixingthe positions. In contrast, Pseudo-CATO preserves the relative odd/even alternating positions while mixing their face-up/face-down orientation."

guessing colors \n selection ends up in odd-colored pile, pseudo-cato \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Guessing Colors

selection ends up in odd-colored pile, pseudo-CATO

moving colors \n packet, two selections (one red, one black) end up in odd-colored pile, pseudo-cato \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Moving Colors

packet, two selections (one red, one black) end up in odd-colored pile, pseudo-CATO

uncertain separation \n after some mixing the cards are eventually sorted either red/black or picture/spots, pseudo-cato \n peter duffie \n robin robertson \n indeterminate conclusion \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Uncertain Separation

after some mixing the cards are eventually sorted either red/black or picture/spots, pseudo-CATO

indeterminate conclusion \n same with two selections ending up in opposite group, pseudo-cato \n peter duffie \n robin robertson \n uncertain separation \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Indeterminate Conclusion

same with two selections ending up in opposite group, pseudo-CATO

tapgac \n "turn any pairs, gather and cut", alternative way of doing hummer's cato
- the tapgac fix
- end notes \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

TAPGAC

"Turn any Pairs, Gather and Cut", alternative way of doing Hummer's CATO

chao theory \n red-black separation with letter cards, using tapgac \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Chao Theory

red-black separation with letter cards, using TAPGAC

the royal clans \n red-black separation with procedure and picture cards, using tapgac \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

The Royal Clans

red-black separation with procedure and picture cards, using TAPGAC

return of the lonely card \n all reversed except selection after mixing process, using tapgac \n peter duffie \n robin robertson \n the lonely card \n bob hummer
2004
diamonds from coal Peter Duffie, Robin Robertson

Return of the Lonely Card

all reversed except selection after mixing process, using TAPGAC

princes and peasants \n red-black separation with procedure, using tapgac \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

deduction production \n selection and rest of four-of-a-kind eventually found, using tapgac \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Deduction Production

selection and rest of four-of-a-kind eventually found, using TAPGAC

two for the road \n after packet mixing process only five cards are face-up - a previously selected poker hand, then fulves's riffle shuffle control after which position of first selection is announced, second stabbed to
- phase i: tapgac poker
- phase ii: riffle shuffle bored \n peter duffie \n robin robertson \n "automatic ace triumph" (kunyasu fujiwara, genii, may 2000) \n hummer plays poker \n peter duffie \n robin robertson \n remote control poker \n peter duffie \n robin robertson
2004
diamonds from coal Peter Duffie, Robin Robertson

Two for the Road

after packet mixing process only five cards are face-up - a previously selected poker hand, then Fulves's Riffle Shuffle Control after which position of first selection is announced, second stabbed to

Phase I: TAPGAC Poker

Phase II: Riffle Shuffle Bored

Inspired by

"Automatic Ace Triumph" (Kunyasu Fujiwara, Genii, May 2000)

raising baby hummer \n selection is reversed, variation with odd-colored back
- off-color baby hummer \n tom craven \n charles hudson's "baby hummer" in "the linking ring" december, 1967.
2006
semi-automatic card tricks — volume 6 Tom Craven

Raising Baby Hummer

selection is reversed, variation with odd-colored back

Off-Color Baby Hummer

Inspired by

Charles Hudson's "Baby Hummer" in "The Linking Ring" December, 1967.

sum hummer explored \n packet mixed face up and down by spectator, number of reversed cards and their total predicted, cato principle \n richard vollmer \n sum hummer \n charles hudson \n sum hummer explored \n harry lorayne \n richard vollmer
2007
best of friends — volume iii Richard Vollmer

Sum Hummer Explored

packet mixed face up and down by spectator, number of reversed cards and their total predicted, CATO principle

outdoing "hummer outdone" \n twenty cards shuffled face-up/face-down with cato under table by spectator, one remembered, performer rights all except selection under the table, ten double facers \n david solomon
2007
the wisdom of solomon David Solomon

Outdoing "Hummer Outdone"

twenty cards shuffled face-up/face-down with CATO under table by spectator, one remembered, performer rights all except selection under the table, ten double facers

mathematics in the air \n chapter intro that describes the cato principle and the mathematics behind it, along with tricks \n persi diaconis \n ron graham \n baby hummer \n charles hudson \n hummer's ten card mystery \n bob hummer
2012
magical mathematics Persi Diaconis, Ron Graham

Mathematics in the Air

Chapter intro that describes the CATO Principle and the mathematics behind it, along with tricks

baby hummer \n used to demonstrate the cato principle, uses four cards \n charles hudson \n basic hummer \n unknown \n mathematics in the air \n persi diaconis \n ron graham \n baby boom \n reinhard müller
2012
magical mathematics Charles Hudson

Baby Hummer

Used to demonstrate the CATO principle, uses four cards

hummer's ten card mystery \n original use of the cato principle, based on the 18 card mystery in the original manuscript, magician can name how many face up cards there are after mixing it up \n bob hummer \n "18 card mystery" (bob hummer, face-up / face-down mysteries, 1942) \n mathematics in the air \n persi diaconis \n ron graham
2012
magical mathematics Bob Hummer

Hummer's Ten Card Mystery

Original use of the CATO Principle, based on the 18 Card Mystery in the original manuscript, magician can name how many face up cards there are after mixing it up

royal hummer \n cards are mixed face up and face down haphazardly, later all cards are face down except a royal flush \n steve freeman \n back to magic \n persi diaconis \n ron graham
2012
magical mathematics Steve Freeman

Royal Hummer

Cards are mixed face up and face down haphazardly, later all cards are face down except a royal flush

back to magic \n end of chapter, describes steve's own variation on steve freeman's handling of royal hummer \n persi diaconis \n ron graham \n royal hummer \n steve freeman
2012
magical mathematics Persi Diaconis, Ron Graham

Back to Magic

End of chapter, describes Steve's own variation on Steve Freeman's handling of Royal Hummer

disparity \n updated handling of the dudeney parity principle. cards are dealt into a grid on the table as directed by the audience. the cards are reassembled by folding rows and columns onto each other - again controlled by the audience - yet the selections are found reversed in the packet. \n ramón riobóo \n paradox papers \n martin gardner \n the works \n john bannon
2015
semi-automatic card tricks — volume 10 Ramón Riobóo

Disparity

Updated handling of the Dudeney Parity Principle. Cards are dealt into a grid on the table as directed by the audience. The cards are reassembled by folding rows and columns onto each other - again controlled by the audience - yet the selections are found reversed in the packet.

matsunoma principle \n procedure which allows you to perform the petal force by mitsunobu matsuyama without a down-under deal. \n lewis jones \n pat hand \n steve beam
2015
semi-automatic card tricks — volume 9 Lewis Jones

MatsuNOma Principle

Procedure which allows you to perform the petal force by Mitsunobu Matsuyama without a down-under deal.

the top-level test \n twenty cards mixed face-up and face-down including a royal flush, royal flush is only face-up cards \n harry lorayne \n "really!" (harry lorayne, lecture notes) \n another top-level test \n harry lorayne
2015
jawdroppers! Harry Lorayne

The Top-Level Test

twenty cards mixed face-up and face-down including a Royal Flush, Royal Flush is only face-up cards

incredible flush control \n diamond royal flush mixed in twenty-card packet, cato procedure, at the end the royal flush in spades is reversed \n harry lorayne \n darn! i couldn't... \n harry lorayne
2015
jawdroppers! Harry Lorayne

Incredible Flush Control

diamond Royal Flush mixed in twenty-card packet, CATO procedure, at the end the Royal Flush in Spades is reversed

sum hummer explored \n packet mixed face up and down by spectator, number of reversed cards and their total predicted, cato principle \n harry lorayne \n richard vollmer \n sum hummer explored \n richard vollmer
2017
jawdroppers! two Harry Lorayne, Richard Vollmer

Sum Hummer Explored

packet mixed face up and down by spectator, number of reversed cards and their total predicted, CATO principle

three new toacs \n toac = turn over and cut, all with twelve-card packet
- prediction
- one to twelve (named value of a suit only reversed at end)
- incredible 2-card location \n harry lorayne
2017
jawdroppers! two Harry Lorayne

Three New TOACS

TOAC = Turn Over And Cut, all with twelve-card packet

Prediction

One To Twelve (named value of a suit only reversed at end)

"that's impossible!" \n only four aces reversed after cato procedure with sixteen cards \n harry lorayne \n "really!" (harry lorayne, lecture notes)
2017
jawdroppers! two Harry Lorayne

"That's Impossible!"

only four Aces reversed after CATO procedure with sixteen cards

eight/great - nine/fine \n - one of eight-card packet remembered (force), found with cato
- one of nine-card packet remembered, found with reverse faros \n harry lorayne
2017
jawdroppers! two Harry Lorayne

Eight/Great - Nine/Fine

one of eight-card packet remembered (force), found with CATO

one of nine-card packet remembered, found with reverse faros

folded discovery \n 4x4 matrix layout, folding tapestry, all of one color end up reversed except selection \n david solomon \n degrees of freedom \n john bannon
2018
solomon's secrets David Solomon

Folded Discovery

4x4 matrix layout, folding tapestry, all of one color end up reversed except selection

really! \n four-of-a-kind ends up reversed after cato/toac procedure \n harry lorayne \n "really!" (harry lorayne, lecture notes)
2018
and finally! Harry Lorayne

Really!

four-of-a-kind ends up reversed after CATO/TOAC procedure

personality quest \n face-up/face-down prediction of number of cards, minor variation of hummer's personality test \n lorenz schär \n personality test \n bob hummer
2020
semi-automatic card tricks — volume 12 Lorenz Schär

Personality Quest

face-up/face-down prediction of number of cards, minor variation of Hummer's Personality Test

strike out \n face-up/face-down prediction of number of cards \n steve beam \n personality test \n bob hummer \n triple humdinger \n peter duffie
2020
semi-automatic card tricks — volume 12 Steve Beam

personalized personality test \n face-up/face-down prediction of number of cards \n steve beam \n personality test \n bob hummer
2020
semi-automatic card tricks — volume 12 Steve Beam

the randomized lie detector \n face-up/face-down cards to form a number and to find selection \n steve beam \n personality test \n bob hummer
2020
semi-automatic card tricks — volume 12 Steve Beam

The Randomized Lie Detector

face-up/face-down cards to form a number and to find selection