Shhh, quickly lock the door and close the curtains!
because I'm going to teach you some magic.

Mundus Vult Decipi Ergo Decipiator…. is my own magic spell. It's Latin and means: The world wants to be deceived, so it will be deceived. Of course that's a secret, but secrets are in good hands with you, otherwise you don't become a magician. At least not a real one.

Do you want to learn magic? Let your friends, family or the schoolmaster be amazed by your skills. But always practice! Many people think that if they know the secret of the trick, they can do the trick right away and forget to practice it. But practice is very important in magic. You should not only practice the trick, but also everything you say and do.

Jannes will regularly post magic tips and tricks here especially for you. So come and see if there are any new old tricks.

If you still have problems to do the trick, just send Jannes a message (see 'contact' above). Then Jannes will help you and we can make the trick clearer.

Jannes has also written a beautiful juggling booklet. Some tricks from this booklet are listed below.

Dice magic

Medieval people loved gambling but it was strictly forbidden. That's why they deliberately made very small dice so that you could hide them or even... eat them when the guards came to check. That's why many medieval dice were found in toilet pits (cesspits) as you can imagine.

We're not gonna gamble. We're gonna play for sure.  You have to be able to count a little, but it's not hard. You let someone roll two dice without you being able to see them. Now you ask to double the number of one of the two dice. Then add five to that number, and multily by five again and finally add the number of the other dice. Ask which number they have now. Then you think for a moment, pretending of course to read their minds, and then you know which numbers were thrown! Translated with www.DeepL.com/Translator (free version)

2 oude benen dobbelstenen, 6 en 4

How does it work? Very simple, you just subtract 25 from the final number! The number you have then are the two numbers you are looking for. We'll give it a try with the dice on the picture with six and four. We choose the six as the first number to double:
6 x 2 = 12
then add 5:
12 + 5 = 17
then that x 5:
17 x 5 = 85
and then add the number of other die:
85 + 4 = 89 
Then you ask what number they have and you secretly subtract 25:
89 – 25 = 64
It'll be a 6 and a 4!

Hint: if you have a spectator who has some trouble with calculations, ask them to throw again if there are high numbers, but of course they can also use the calculator.

In short:
x2 / +5 / x 5 / + other die......... and then you secretly do - 25

IANNVS als Romeins Goochelaar leert je in deze video een truc:

The four fives

Vier vijven beginpositie

You take the four fives from a deck of cards and you make sure they all stand up neatly. Now you're gonna wonder, upright? Take a look at the cards on the right and pay attention to the middle symbol of each card! These are all upright. Of course it doesn't matter for the diamonds.

Place all the cards on top of each other and hold them face down. Now you shuffle the cards, or even better, you let them shuffle. Of course, make sure the cards are not turned.

Now you have a card chosen and you say: Take a quick look at which card it is. While they do that, you bring your hands back to your body and doing that, turn the whole pile (well, it's only three cards left) a quarter turn. If they want to put the card back, turn a second quarter turn. This secretly makes the chosen card got upside down into the deck!

You let the cards shuffle again (or you shuffle yourself and you don't look at the cards at all) and you put the cards one by one side by side on the table:

If all goes well, there is now one card that lies the other way around! On the right it is the...you see it? .... the vive of clubs! The middle club is upside down.

But you don't say this immediately no... you make a lot of theatre out of it, of course. You can say... hmmmmm ... it's ... it's ... a FIVE! Of course that's a joke but then you say and he's black ... and I think it's the five of clubs!

Vier vijven met omgedraaide klaver vijf

Now we have one more problem, what if they pick the windows? Do you know the solution yet?
Yeah, of course: If they choose the diamonds then no card is upside down so it must be the diamonds!

By the way...to prevent someone from accidentally flipping the card while looking at his card you tell him to take a very quick look. Then most people don't turn the card around and put it back the way they took it out. If you see that someone is spinning the card anyway (it happens sometimes) then you can of course turn your cards also and save the trick! Translated with www.DeepL.com/Translator (free version)

Don't forget to reverse the chosen card unnoticed if you want to do the trick again.

A math trick


In this example, the chosen number is 26!

For this trick you need 6 number cards. You can download them here, print them and cut them out. (neatly along the lines of course!)

You ask someone to think of a number between 1 and 63. After this you show each of the 6 cards and ask if the number is on the card.

After that, you're going to do a bit of drama, pretend to read minds, or pretend to think very hard... and then you name the right number!

How do you know this? It's very simple! All you have to do is add up some numbers, namely the numbers that are in the top left corner of all the cards that have the chosen number on them! So if you show the cards one by one, then you (only if the number is on the card, of course) secretly add these numbers together and you're done!


1) You can make it even more theatrical and say (if you already known that it is 34) that it is an even number, that it is higher than 30, and so on. If, for example, the number is 26 and that is someone's house number, then you say that you suddenly have to think about that house... That is how you make it fun and exciting. It is also a good misdirection, and magicians often use misdirections.
2) If you have printed the cards on paper you might be able to look through it against some light! Then it looks like you're not even looking at the numbers! It is a bit tricky in mirror image, but you know which numbers can be expected on the top left. I'm sure that will work.
3) Adding large numbers together can be quite difficult. Just show the cards with the high numbers first, then you've had the most difficult ones! It's always the same numbers that you have to add up, so after a few practises it gets easier and easier.
4) For the real mathemagicians: it also works the other way around! If the number is not on one or two cards, then you can subtract them from 63! Give it a try.

A betting game under the hat

hoge hoed

A real top hat is of course the best, but it can also be done with something else like a saucepan. (eat the sauce first!)

Have the hat examined and borrow a coin. Let your audience lift the hat and put the coin underneath it and place hat over it. Now bet that you can take the coin away without touching the hat. Of course no one will believe this, but it is possible if you already have the same coin on your knee under the table. Now you go with your hand under the table, make some difficult noises with your hand against the table as if you were going through the table. Then you get your own coin triumphantly underneath it. Pretend you've already won! They won't believe you, so you say: 'Really, take a look! 'When they lift the hat you quickly grab the original coin. Now you have indeed taken the coin without touching the hat.

It is very important to have your audience check and place the hat beforehand. They will then be used to the hat in their hands and will lift it more easily a little later.


Do not use a helmet because then they can see the coin through the visor.

© 2018-2022 Jannes de Goochelaar