Focus 8 cards that you think. The simplest home trick "Amazing prediction

government agency education

Scientific and practical conference of students and teachers

"First Steps in Science"

Subject area: mathematics

Card tricks

with math

Fulfilled

student of 7 "A" class

Scientific director

mathematic teacher

Introduction……………………………………………………………………….. 2

Chapter I Tricks with mathematical calculation…………………………….. 3

1. What is focus

2. What are the tricks

Chapter II. Card tricks with mathematical calculation………………. 9

Sections of tricks with mathematical calculation

2. Martin Gardner's contribution to the development of tricks

Conclusion ……………………………………………………………………20

Literature …………………………………………………………..............

INTRODUCTION

Once a friend began to show me a card trick. I couldn't figure it out. But after he told me his secret, it turned out that the trick was not so difficult. This interested me even more. Reading books about card tricks, I learned that most of them are based not on sleight of hand or deceit, but on the most common mathematical calculation. And since I am fond of this wonderful science, I decided to combine entertainment with my favorite subject and chose this topic for research work.

Here is an example of my favorite math trick:

Addition - 2

Hence, the object of study : card tricks with mathematical calculation.

The purpose of the work: to get acquainted with the role of mathematical calculation in card tricks.

In accordance with the goal, the following tasks were defined:

Expand the concept of focus;

Explore sections of tricks;

Learn tricks with mathematical calculation;

Tell about famous magicians and talk about their contribution to the development of card tricks.

Tricks with mathematical calculation

1.What is focus

Focus is an artistic number, inexplicable from the point of view of the viewer.

2. What are the tricks

All focuses are divided into several sections. Now I will tell about them and give examples:

1) card tricks

Eighteen

It's lightweight and spectacular focus. It requires a deck of 32, 36 or 52 cards. We mix the cards well and give the deck to someone who wants to assist. He may, at his discretion, shuffle the deck again to ensure that the cards are not pre-arranged. Then we invite him to count 18 cards and return them to the rest, but with the picture up. Again we invite the assistant to carefully shuffle the deck, and then count 18 cards and give them to us. He keeps the rest of the cards.

We then say that we will make sure that the number of face up cards in our 18 cards in our hand is equal to the number of face up cards in the assistant's pile.

We tap lightly on the pile we hold, quietly turn it over and count the cards lying face up with everyone. We suggest that the assistant do the same. To the surprise of everyone, even ourselves, the number of face-up cards in both piles will be the same. Do not express your surprise in front of the rest, try to impress the public that it's all about your skill.

Example. For convenience, a deck of 32 cards is used. After turning over the top 18 cards and after re-shuffling them by an assistant, they will be, suppose, in the following sequence (flipped cards are indicated by "+"):

PA+, BH+, Ch9+, T9+, T8, BA+, B9, TV+, ChK+, Ch8+, BD+, Ch10+, CHA+, P10+, ChV+, P9, TD, PV, PC, BK, B7, B8, P8+, PA+, T7, 47, PD+, BV+, TK, T10, B10+, P7.

The newly counted 18 cards - from PA + to PV. We turn over this entire pile, the sequence of cards changes and takes the following form: PV +, TD +, P9 +, CV, P10, CHA, 410, BD, 48, CHK, TV, B9 +, BA, T8 +, T9, 49, BH, PA .

With the help of a similar "operation" in this pile there are five

2) simple focus

How to remove a ring

A meter-long elastic band is tied to the hands of one of the spectators, on which a large ring hangs. Offer to remove this ring without untying the elastic band and without removing it from your hands. He won't be able to do anything.

Focus secret:

To remove the ring, you need to put it on your hand. Then throw a rubber ring over it, slightly stretching it. It will be higher. After that, the ring is easily removed completely. The ring size should be such that it can be easily put on the hand.

3) tricks with coins

Coin from bills

In your hands is a banknote stretched between your fingers. Fold it up a few times. The banknote has turned into a coin!

The secret of the trick is in a hollow coin, inside of which a folded bill is hidden. It is not difficult to make such a coin. To do this, take three identical coins of large diameter. Grind two of them to the sharpness of the blade, and in the third (middle) cut out a three-sided square. Now glue all the blanks together. It will turn out hollow, indistinguishable from the outside from a real coin - with a window at the end.

At first, keep such a coin behind a bill, and the audience will not see it. Slowly fold the bill in front of the coin four times, and then discreetly and quickly slide it inside the coin. It remains to cover the window with your thumb and boldly demonstrate the coin from both sides. It is clear that now the viewer will not see the banknotes, no matter how carefully he looks at your hands.

4) math tricks

magic table

On the board or on the screen is a table in which, in a known way, numbers from 1 to 31 are written in five columns. The magician invites those present to think of any number from this table and indicate in which columns of the table this number is located. After that, the magician calls the number you thought of.

Focus clue:

For example, you thought of the number 27. This number is in the 1st, 2nd, 4th, and 5th columns. It is enough to add the numbers located in the last row of the table in the corresponding columns, and we will get the intended number (1+2+8+16=27).

5) chemical tricks

Show the audience six flowers - three red and three blue. Move two chairs 10 paces apart and place a glass on each. Then pass the red flowers to one of the spectators and the blue ones to another and ask them to remember the colors well.

After all this is done, put the red flowers in one glass and the blue flowers in another. Cover both glasses with handkerchiefs and ask the audience to guard them.

The magic of these flowers is - tell the audience - that they themselves, without outside help, change their places, and everything happens very imperceptibly, no matter how carefully they are watched. After a few minutes, ask the spectator guarding the red flowers to remove the handkerchief and check if what he was guarding is in its place.

To everyone's surprise, the red flowers disappeared in an unknown way, and the blue ones appeared in the glass. The same thing happened to the second spectator: instead of blue ones, he has red flowers in his glass.

The secret of the trick: All six artificial flowers, made of white matter, were dyed with two strong infusions: three with red litmus and three with blue.

Before the demonstration, you poured a little vinegar essence into one glass, the same amount into another ammonia. Blue flowers were placed by you in a glass of vinegar essence, and red ones - in a glass of ammonia. From the action of acetic vapor, the blue flowers will gradually turn red, and from the vapor of ammonia, the red flowers will turn blue.

6) tricks with ropes

Pulling the rope

The length of a thin or thick rope should be about 1.2 m. Tie the ends of the rope with a knot. Put your thumbs through the loop and stretch the rope. Show everyone this rope, holding it at neck level.

“Now try to guess: what do I have - a magic rope or a magic neck? See for yourself."

Without removing your fingers, throw the rope loop over your head so that the rope is behind your neck (fig. 1).

Quickly join hands and slide the index finger of the left hand into the loop behind the thumb of the right hand. Pull the thumb of the right hand to the right, the index finger of the left hand to the left. On fig. 2 shows the beginning of this movement

The thumb of the left hand naturally falls out of the loop, but only for a moment. Without hesitation, very quickly, without interrupting the movement, connect the thumb and forefinger of the left hand and continue to pull with the thumb to the left. Your left index finger will automatically release. Stretch in a quick motion thumbs loop and show the rope to the audience. The position of the rope and fingers will be the same as at the very beginning. It seems that you managed to stretch the rope through the neck.

All movements are done in a split second. After practicing six times, you will remember and learn how to do this trick for the rest of your life.

This focus can be shown in another way. For example, you can pull the rope through the belt loop. You can make it even more effective if you stretch the rope around the arm of one of the spectators and then it will seem that it has passed through his arm.

7) tricks with matches

Conceived number

Remove some of the matches from the matchbox. Invite a willing viewer to think of any number from the second ten. Let the numbers of this number be added together. When you are called the result, return this number of matches back to the boxes.

If now the viewer counts all the matches in the box, then their number will be equal to the intended number.

Secret of the trick: Nine matches must be left in the box - the rest of the matches are removed. Whatever number the audience has in mind, the sum of its digits (if 9 is added to it) will be equal to the intended number. For example: they thought of the number 17. 1 + 7 = 8. Return eight matches back to the boxes. 9 + 8 = 17.

8) tricks with scarves

air scarf

You have a handkerchief in your hands. Show it from both sides. Collect the ends of the handkerchief in the palm of your hand, bring it to your mouth and blow into it. Gradually, the scarf will straighten out, begin to increase in size, and eventually turn into a ball. Demonstrate an inflated handkerchief, then pierce it with a needle.

Focus secret:

Take two absolutely identical 30x30 cm scarves. Fold them together and sew on all sides. Make a small cut in one of the corners. Insert a balloon there, after stretching it. Fasten the neck of the ball, remaining outside, with a thread. When showing a handkerchief, cover its secret corner with your hand.

Card tricks with mathematical calculation

1. Sections of tricks with mathematical calculation

All card tricks are divided into two types:

A. with mathematical calculation

B. “sleight of hand and no fraud”

Here's an example of each:

Addition

This trick requires a deck of 52 cards. Having shuffled it, we give it to the assistant for removal. We count, opening one at a time, 26 cards; while we must remember the seventh card. We turn the resulting stack upside down and keep it with us.

We give another pile of 26 cards to the assistant so that he selects three cards at random from it and puts them open on the table. Then, on each of them from the same pile, he must put as many cards as the difference between the number 10 and the cost of this card (for example, if we turn over a six, we put four cards on it). The value of the cards: ace - 1, jack - 2, queen - 3, king - 4, all other cards have a value corresponding to their value.

After the assistant counts the required number of cards for each of the chosen three, he must put the remaining cards of his pile on the pile that we left with us and in which the seventh card is the card we know. The tension is rising! We invite the assistant to add up the point value of the first three cards, that is, those that he randomly drew from his pile. We inform him that we can guess the card lying in the pile (now already one) under the serial number equal to the sum of the point values ​​of the three cards already mentioned. This will be the map known to us.

With the help of a newspaper

Description of the trick: A card is chosen and returned to the deck. Lay the deck out on the table. Cover it with newspaper. Stick your hand under the paper to find the mysterious map. Take out a few cards with the words: "I think your card is not here." Repeat until there is only one card left under the newspaper: the one you are looking for.

Preparation: stick a circle of double-sided tape on a small coin and hide it in your right hand.

Demonstration of the trick: before returning the chosen card to the deck, let the spectator look at the newspaper with the left hand. At the same time, glue the coin discreetly on the front side of the selected card (closer to the corner). Show the card to the audience again (your fingers cover the coin) and turn it face down. Mix with the rest of the cards and spread the deck on the table. Take a newspaper and cover the cards with it. By touch (on a glued coin), find the selected card and move it to the side. Gradually take out the cards. Before you take out the given card, peel off the coin and stick it on the newspaper. Your hands are free and you can safely lift the paper and show the only remaining card.

Since I like math, I decided to focus on math tricks and math card tricks. I will tell you the trick and explain its secret.

cyclic number

If you multiply the “cyclic number” 142857 by any integer from 2 to 6, you will get a number made up of the same digits, with their circular permutation. This is what the focus is based on.

You give the spectator 5 red suit cards with numerical values ​​2, 3, 4, 5 and 6. You take 6 black suit cards for yourself and lay them out so that their numerical values ​​are the digits of the number 142857. You and the spectator each shuffle their cards; in doing so, you only pretend that you are shuffling, in fact, you preserve their order. Turning the cards twice from one side to the other will give the spectators the impression of a shuffle.

Next, you lay out the cards in a row on the table, front side up, forming the number 142857. The spectator chooses one of his cards and places it face up under your cards. Using a pencil and paper, the spectator multiplies our number by the numerical value of the card he has chosen.

While he multiplies, you collect your cards, put the first card from the left on the next one, then on the next one, and so on. The cards need to be removed once, and then you put them in a pile on the table without revealing them.

After the spectator has finished multiplying, you take your stack of cards and lay them out again from left to right, face up. The six-digit number that is thus obtained, of course, coincides with the result of the multiplication obtained by the viewer.

The secret of this trick is that you collect cards of the black suit without disturbing their order in which they were laid out. Let the viewer multiply our number by 6. In this case, the work should end with a two, because six times seven (the last digit of the multiplier) will be 42. If the deck is removed so that the two is at the bottom, then after the cards are revealed, it will be the last card and the number shown by the cards will match the spectator's answer. The cyclic number 142857 is the reciprocal of the prime number 7 in the sense that it is obtained by dividing 1 by 7. Other cyclic numbers are also obtained by dividing one by larger primes.

phenomenal memory

To carry out this trick, it is necessary to prepare many cards, on each of which put its number (two-digit number) and write down a seven-digit number according to a special algorithm. The “magician” distributes cards to the participants and announces that he will memorize the numbers written on each card. Any participant calls the number of the card, and the magician, after a little thought, says what number is written on this card. The solution to this trick is simple: in order to name the number, the “magician” does the following: he adds the number 5 to the card number, flips the digits of the resulting two-digit number, then each next digit is obtained by adding the last two, if a two-digit number is obtained, then the units digit is taken. For example: card number - 46. Add 5, get 51, rearrange the numbers - get 15, add the numbers, the next - 6, then 5 + 6 = 11, i.e. take 1, then 6 + 1 = 7, then the numbers 8.5. The number on the card: 1561785.

Guessing the number of card points

Guess how many points are in three cards taken by someone?

From full deck in 52 cards let someone take three cards and keep them. To find out how many points are in these three cards, proceed as follows ...

They ask the one who takes three cards to add so many cards to each card taken by him so that, together with the points of each taken card, 15 is obtained (Each of the figures is counted as 10). After that, the guesser can only take the rest of the cards, count their number to himself, subtract 4 from the resulting number, and get Exact sum points taken 3 cards.

EXAMPLE: Let. for example, someone took a four, a seven, and a nine. Then he must attach 11 cards to the four, 8 cards to the seven, and 6 cards to the nine. There are 24 cards left from the deck. Subtracting four from 24, we find that the sum of the 3 cards taken should be equal to 20, which is true

Addition - 2

Take a deck of 36 cards. We guess any card from the deck (if it turns out to be a trick, then you can ask to pull it out and guess, or just guess - it doesn’t matter at all). For ease of experiment, you can at least the ace of spades, at least a tambourine - to clearly remember. The deck is shuffled absolutely no matter how, however you like.

Next, I take the deck and face up, sequentially lay it out
four packs of nine cards each. I ask the victim
which deck is his card? He says. I take any block in my hand, then another one, and then the indicated one and cover it with the fourth, remaining one. That is, I put the block with the appropriate card in the penultimate hand. All this is done with the shirt down, the picture up.

The deck is no longer shuffled. Again I lay out on four blocks,
I ask where? And again I take the indicated block of the penultimate one. I don't shuffle. I'm posting for the third time. In the same way, the indicated block is the penultimate one. Three times is absolutely enough (but you can decompose at least ten - the result will be the same). Now I pretend to be smart and look at the cards (in fact, I count them). The desired card is ALWAYS the fifteenth from the top.

21 map or riddle of intuition

Effect. The magician recognizes the card mentally conceived by the viewer.

Mechanical engineering. This is a very old trick that many people probably know. Its essence is as follows. The magician arranges 21 cards into three packets of seven cards each. The spectator conceives one card and shows in which package this card is located. Three packages are assembled instead, but in such a way that the package with the intended card is in the middle. Then the cards are dealt again, one for three packets, and the spectator shows in which packet his conceived card is. They are assembled again so that in the middle there is a bag with a spectator's card. This process is repeated one more time. That is, only three times. As a result of this, the intended card is always the 11th from the top. This is due to pure arithmetic. Readers, if they wish, can independently understand the mathematical essence of this trick and derive a general case that is valid for any number of cards. Unfortunately, this trick is shown exactly as just described. The disadvantage of such a demonstration is that the initial count of 21 cards and the subsequent three-fold collection and unfolding of packages directly indicate the mathematical essence of this trick. This shortcoming can be eliminated in the following way.

Psychological technique. You set aside 15 used cards and take the rest of the deck, which contains exactly 21 cards. You justify setting aside 15 cards by saying that you will need more cards for the next experiment on intuitive perception. You give this rest of the deck to the viewer and ask him to carefully shuffle, then turn the cards facing you, mentally select and remember any card, and then shuffle again. The cards are then given to you and you deal them face down into three packs. Ask the spectator to “intuitively” determine which of the three packages, in his opinion, the conceived card should be. The spectator himself takes the selected package and sees if it contains the card he has conceived. If there is, then say that he has a heightened intuition. If there is no card, then give the viewer one more attempt to choose from the remaining two packets. Then you combine the cards so that the package with the intended card is in the middle. Now say that for the purity of the experiment, in order to exclude chance, it must be repeated two more times. That is, you give the viewer three attempts to test his intuition. In this case, you do not see the face of any card. And the triple unfolding is masked by experiment to test intuition. Then you scatter the cards one at a time face down in a mess and memorize where the 11th card falls. Now you demonstrate your "intuition" by pointing after many "hesitations" to the 11th card. The success of this trick depends on how much you can occupy the thoughts of the audience with an imaginary definition of his intuition. To achieve this effect, you must yourself believe that you are conducting an experiment on intuitive perception, and behave accordingly. It is necessary to take away as much as possible from arithmetic, in which the secret is hidden. Moreover, during the trick, you can emphasize the fact that during the trick you did not see the face of any card.

Martin Gardner (Eng. Martin Gardner; born October 21, 1914, Tulsa, Oklahoma, USA) is an American mathematician, writer, popularizer of science.
Presenter of the mathematical games and entertainment section of the Scientific American magazine, in which the game "Life", invented by J. Conway, was presented to the general public, as well as many others Interesting games, tasks, puzzles.

Many readers may not be aware of the many facets of Martin Gardner's magic. First of all, he is a great inventor of puzzles for "mind gymnastics" and all sorts of magic tricks. His first publications appeared in The Sphinx, an American magazine for magicians, while Martin was still at university. He gladly demonstrates his tricks to everyone who is lucky enough to meet him. For example, he can make a bun bounce on the floor like a rubber ball, swallow a knife, or put a ring borrowed from you on a rubber band. He especially likes tricks that "refute" the laws of topology.
A completely different kind of magic is Martin's ability to explain serious mathematical concepts to non-specialists, and in such a way that they light up with a desire to learn more. Unlike many other popularizers of mathematical science, he is loved not only by amateurs, but also by professionals. When asked how he succeeds, he usually replies that it's just a matter of his lack of deep knowledge. He didn't take a single math course in college. Only in 1989 did he act as a co-author scientific work describing new discoveries.
Although Martin was a self-taught mathematician, his personality and work influenced many specialists, including us. He once turned a wandering boy magician into a budding mathematician by publishing some of his mathematical ideas and later by helping him further his studies and career. On another occasion, a whole “bouquet” of serious theoretical problems grew out of his attempts to understand a number of puzzles in order to create new ones.
Martin did not achieve his success easily. After graduating from the University of Chicago in 1936 with a bachelor's degree in philosophy, he became a newspaper reporter in Tulsa and later a university press officer. After four years in the Navy during World War II, he began writing stories for Esquire magazine, moved to Manhattan, and became one of the editors of Humpty Dumpty Magazine. After eight years of inventing entertaining entertainment and writing stories and poetry for 5- to 8-year-old readers, he began writing his famous Scientific American column. And before that, as we know, he lived for many years in a small, gloomy apartment, wore shirts with frayed collars and holey drawers, and often breakfasted only with a glass of coffee and a puff pastry.
In his publications in Scientific American, Martin presented the results of a large research work. He once said that working on the column only left him a few days a month for other research and work. His main motive for leaving the journal was precisely the lack of time to write books and articles on subjects unrelated to mathematics. At present, he has already published more than forty books, among which, in addition to mathematical works, are works devoted to natural science, philosophy and literature. His long out-of-print theological novel, The Flight of Peter Fromm, saw the light of day only in 1989. Some of his books are collections of literary essays and critical articles. We recently visited Martin and were amazed at the enthusiasm and childish delight with which he took a new trick for him, shown by one of us. The trick was a curious way of dividing the deck of cards. In the eighth decade of his life, he is just as stubborn as in student years, is looking for what illusionists call new and original "movements".

in the development of mathematical tricks

3. Martin Gardner's contribution to the development of tricks

Martin Gardner was one of the few mathematicians who was fond of tricks, as well as inventing them. Here is an example of the most common ones:

- Guess the number

- Who has what card?

- Favorite number

- Guess the conceived number without asking anything

- The number in the envelope

- Guessing the day, month and year of birth

- Guess the day of the week

- guess age

Let's take a closer look at the following tricks by Martin Gardner, because they are card tricks with mathematical calculations.

1. .Five piles of cards

The demonstrator sits down at the table along with four spectators. He deals five cards to everyone (including himself), invites everyone to look at them and think of one. Then he collects the cards, lays them out on the table in five piles and asks someone to point him to one of them. Then he takes this pile in his hands, opens the cards in a fan, facing the audience, and asks if any of them see the intended card. If so, then the one showing (without looking even once at the cards) immediately pulls it out. This procedure is repeated with each of the heaps until all the intended cards are found. In some heaps of conceived cards, there may not be any at all, while in others there may be two or more, but in any case, the cards are guessed by the showing unmistakably.

This trick is explained simply. Fives of cards must be collected starting from the first spectator sitting to your left, and then clockwise (cards are held face down); the cards of the demonstrator will be the last and will be on top of the pack. Then all the cards are laid out in piles of five cards each. Any of the heaps can be opened to the audience. Now, if viewer number two sees the intended card, then this card will be the second one, counting from the top of the pile. If the fourth spectator sees his card, it will be the fourth in the pile. In other words, the location of the intended card in the pile will correspond to the number of the spectator, counting from left to right around the table (i.e. clockwise). This rule is valid for any pile.
After a little reflection, it becomes clear that in the trick under consideration, just like in the previous one, the same principle is applied with the intersection of rows. However, in the latter version, the "spring" is much better camouflaged, which results in a much greater external effect.
In the coming pages, we will focus on those tricks that may seem more original or entertaining; in doing so, we will try to illustrate as many mathematical principles as possible on which they can be based.

2. Guessing the number of cards taken from the deck

The demonstrator asks one of the spectators to remove a small pack of cards from the top of the deck, after which he himself also removes the pack, but with a few big amount kart. Then he counts his cards. Let's say there are twenty. Then he declares: "I have four cards more than you, and enough more to count to sixteen." The spectator counts his cards. Let's say there are eleven. Then the showman lays out his cards one by one on the table, while counting up to eleven. Then, in accordance with his statement, puts four cards aside and continues to lay cards, counting further: 12, 13, 14, 15, 16. The sixteenth card will be the last, as he predicted.
The trick can be repeated over and over again, and the number of cards put aside must be changed all the time, for example, once there can be three, another - five, etc. At the same time, it seems incomprehensible how the showman can guess the difference in the number of cards without knowing the number of cards drawn by the spectator.
Explanation. In this, too, a simple trick, the showman does not need to know at all the number of cards in the spectator's hand, but he must be sure that he has taken more cards than the spectator. The showman counts his cards; in our example there are twenty. Then arbitrarily takes some small number, say four, and subtracts it from 20; it turns out 16. Then the demonstrator says: "I have four cards more than you and that many more to count to sixteen." The cards are recalculated as explained above, and the statement turns out to be true. (Assume that the viewer has k cards, the one showing N > k cards, let, further, the number m< N, Очевидное равенство N = k + m + (N - k - m) является математическим эквивалентом утверждения, показывающего: "у меня имеется на m карт больше, чем у зрителя, и ешё столько, чтобы от числа карт зрителя (А) досчитать до числа N - п". Число m следует выбирать маленьким; если m + k будет, больше, чем N, то разность N - k - m окажется отрицательной.)

3. Focus with four cards

The deck of cards is shuffled by the spectator. The demonstrator puts it in his pocket and asks one of those present to name any card aloud. Suppose the queen of spades will be named. Then he puts his hand in his pocket and takes out some card of spades; this, he explains, indicates the suit of the named card. He then draws a 4 and an 8 for a total of 12 queens.
Explanation. Before demonstrating this trick, the demonstrator removes an ace of clubs, a two of hearts, a four of spades and an eight of diamonds from the deck. Then he hides these cards in his pocket, remembering their order. The deck shuffled by the spectator also falls into the pocket, and so that the selected four cards are on top of the deck. Those present do not suspect that when the deck was shuffled, four cards were already in the pocket of the demonstrator.
The numerical values ​​of the four cards set aside form a series of numbers (1, 2, 4, 8), each of which is twice the previous one, and in this case, as you know, you can combine them different ways, sum up any integer from 1 to 15.
The card of the required suit is drawn first. If she must participate in a combination of cards that add up to the desired number, then she is included in the total score along with one or more cards that are additionally drawn from the pocket. Otherwise, the first card is set aside, and one or more cards are taken from the pocket, necessary to obtain the desired number.
When showing our trick, one of the four selected cards may also be randomly named. In this case, the demonstrator immediately pulls it out of his pocket - real "magic"!
The series of numbers we encountered in this trick, each of which is twice as large as the previous one, is also used in many other mathematical tricks.

And many more tricks.

And also tricks include tricks: “ Guess the crossed out number ”, “ magic table ”, “ Guess the number ”, “ phenomenal memory ”, “ cyclic number ” given earlier.

CONCLUSION

In conclusion, I will offer you my personal focus:

four aces

You ask someone to name a number from 10 to 20 and put the same number of cards one at a time into a separate pile. Then you count the sum of the digits of the named number, remove from the top of the pile a number of cards equal to this sum, and return them back, but put them on top of the deck. any number from 10 to 20 and do the same. You do the same two more times until you put aside 4 cards.

Then you reveal those four cards and they all turn out to be aces, to the surprise of the audience.

Here the whole point is that before the start of the trick, aces are placed on the ninth, tenth, eleventh and twelfth places from the top. Everything else will happen automatically.

The top card is set aside, face down, and all other cards are placed in place.

Thus, we can conclude that in the life around us, much more phenomena and events are associated with mathematics and mathematical calculation than we actually imagine.

It so happened that at any age, regardless of whether it is a student party or an office corporate party, a person who knows how to show at least one trick with cards will always become the highlight of the program. All viewers understand that they were deceived somewhere, but hardly anyone can prove, and even more so show how this happens. Therefore, you should not immediately reveal your secrets of tricks with cards, because the longer the audience remains in the dark, the more attention will go to the lucky fakir. And the girls will gladly give the hero their kiss in exchange for revealing the secret of mysterious manipulations.

Easy trick - four aces

The simplest trick with cards is when the spectator is asked to divide the deck into four arbitrary piles, after which he shuffles them, and at the end he finds that an ace lies at the top of each pile. There is no limit to surprise and puzzlement. After all, a voluntary participant in the show knows that he himself divided the deck, shuffled it himself, took out the cards himself, and therefore what happened can only be explained by mysticism. Although there is nothing simpler than the fact that the person who volunteered to help will do all necessary work, exactly following the instructions of a homegrown mage. To perform easy tricks with cards, no training is required, it is enough to have a confident look and know a few secrets.

Preparation and execution

So, for the successful execution of this number, you need a deck of cards, a table and a volunteer, and, of course, precise instructions. The first step is to place all four aces at the top of the deck. Naturally, neither the guest nor the assistant should see this. Having asked the spectator (or assistant) to divide the deck into four parts, you need to note for yourself where the stack with aces lies. Usually it is on the extreme left or right.

After that, you need your assistant to remove the top three cards from the pile without aces and put them in the base, and then spread three more on adjacent decks. The same must be done with the rest of the packs (without the 4 pictures we need). At the end, there will be a turn and decks with aces. The assistant will shift the top three cards that fell into this pile from neighboring ones to the base, and the freed aces will put them in their places on top of the decks. Now you can ask one of the guests, or, again, an assistant assistant, to turn over the cards that are on top, and the whole audience with bated breath will see with delight that these are really four aces.

The self-ordering deck is another easy math trick.

This trick with cards can be performed both by yourself, and again entrust the deck to one of the spectators and only guide his actions. But let's imagine that the corporate magician decided to do everything himself. Then the deck must be prepared in advance. All cards must be sorted by suit into four sets. The first will be an ace, then a two, a three, a four, and so on until the king. Having stacked all the packs on top of each other, you can show the deck to guests.

After counting exactly 21 cards, so as not to knock down the sequence of their arrangement (of course, no one should notice that they were divided by count), the top pack must be placed at the bottom of the entire deck. Now you need to split the deck 9 times anywhere. Again, you can do this yourself, or you can invite one of the guests. After these manipulations, it is necessary to decompose the pack into thirteen piles, sequentially one after the other. Everything, the focus is ready! Now you can invite spectators to make sure that the whole deck is packaged according to its value: aces, twos, threes, and so on.

I won! Pay with a kiss

The meaning of the whole trick is that a man bets on a kiss that he will guess the card chosen by his companion. This trick with cards is not only simple, but also very easy to perform. It is enough, having divided the deck into two parts, ask the girl to put the chosen card on the bottom pile and see which card will be at the base of the top one. After that, you can safely cut the deck several times and begin to remove and turn over the cards one at a time. As soon as the card that was peeped appears, you can announce that the next one will be hidden ... and tear a kiss from the lips of the surprised beauty.

Quite common among magicians, the trick of guessing the card belongs to the category of medium in terms of the complexity of execution. It is difficult to perform it without certain skills. Be sure to master the skills of cutting, skillful shuffling and ways to divert the attention of the public. Consider two main options for doing this trick along with secrets.

Guessing one of 12 spread out in a fan or ribbon

The bottom line is this. Of the 12 pieces you selected in advance, the participant guesses any one, and you effectively guess which one. The secret is in the drawings. You choose in advance from a deck of 12 cards of an odd order, that is, threes, fives, sevens, and so on. Lay them face down in front of you and look carefully. Most of the drawings on each are equally directed either up or down.

Now take one and turn it over. In the figure, this is 9 crosses.

That is, before starting the trick, unnoticed by the public, you need to lay out the cards with the pattern in one direction. Then you invite the person to choose any, let him pull it out of your layout. He remembers, and in the meantime, you quietly collect all 11 pieces and, folding them into a small deck, turn the entire stack upside down. The spectator gives his, and you insert it into the general deck, restoring 12 pieces. And now the most spectacular moment. You sort through the cards one by one slowly, as if thinking, and name the one you need. After all, it has a drawing in a different direction. For example, if the guess was 7 crosses, then it will look something like this.

As you can see, learning to guess the card is not at all difficult, you need to be able to perform some manipulations unnoticed by others.

It is important! To focus, take 12 images of all stripes, except for diamonds, otherwise the trick will not work.

Guess the card in a simpler version

You count 21 pieces from the deck in front of the public and, having laid them out in a beautiful semicircle, offer to name any number from 6 to 21. Then you count all the cards in front of you and on the number called by the person, take them out, call them correctly and demonstrate to everyone as proof. From the outside, it seems that it is impossible to guess, but the trick is quite simple. You can learn this trick here:

Guess any conceived

You shuffle the pack and invite the viewer to choose any picture and keep it for now. You yourself shuffle the deck again and quietly memorize the last card in the pile. Then lay out the entire stack into 5 piles, and ask the spectator to put his card on any of them. Then you cover the stack with your chosen main deck (one part of 5, only with the card that you remember at the beginning).

Thus, it turns out that the participant's picture lies in front of the one that you remember. The whole deck gathers together, unfolds like a fan, and the magician calls the picture made by the person. After all, it lies to the right of the one that you remembered. If your card was 7 of hearts, then the spectator would have, say, 10 of spades.

Incredible focus on just three pieces from the deck

One of the brightest and most entertaining tricks that makes the brain just explode. It is most commonly referred to as the "3 Cards of Monte". Only three pieces are in the hands of the magician, who demonstrates each of them to the viewer. The trickster asks to remember one of them and follow it throughout the performance. The man watches closely, but every time the magician asks where she is, the eyewitness fails. There is no way to guess the card!

In general, the trick with three cards is remarkable precisely because it seems to be easy to follow, but there are only three cards. However, no matter how many attempts the participant has, he will not be able to guess the right one. But the magician determines its place unmistakably and accurately.

To master the skills for such a trick, we suggest going through a thematic training: guess one of the three cards. In addition to learning how to master this trick, you can preview it in action. To do this, follow the link:

To show such tricks with cards you will need special. cards with special coated. You can order these

It is important! Before attempting this trick, make sure you are fully proficient in card manipulation such as double raise and flip. This is the basis of this trick.

There are several varieties of this focus. Either the cards are moved in their hands by the performer, or this is done on the table, but always in front of the public.