Experience an Interactive Magic Trick: "the Clock"

  • 01 of 03

    The Clock Trick

    Here’s an interactive magic trick that works across the web and you can have fun showing your friends. All you have to do is refer to them to this page and let them follow the instructions. And you may wish to try it out first.

    Here goes:

    Select any number on the clock. You have a completely free choice. Remember your number.

    Continue to 2 of 3 below.
  • 02 of 03

    Select a Second Number

    Follow the straight line from your number, through the center of the clock and to the number on the other side. Take the two numbers that are connected by the line and subtract the smaller number from the larger one. You now have a new number. Please remember it.

    Think of your number. Even though you’re at home, this web page will try to read your mind.

    Continue to 3 of 3 below.
  • 03 of 03

    This Is Our Best Guess

    After considerable thought, our best guess is that you are now thinking of the number “six.”

    For another fun interactive web magic trick, check out "The Prediction."


    Alright, the secret to this effect isn't rocket science. It's simply a trick that's based on a mathematical property of a clock. You could call it a force but I think that it's simpler than that. This could be classified as a mentalism style trick that can be presented as a mind-reading routine or a prediction.

    Here's how it works. When you take a look at all of the numbers on a clock, if you look at the numbers that are directly across from a number on the opposite side, you'll find out that the lower number is always six less than the higher number.

    Go ahead, check it out. Ten minus four is six. 11 minus five is six, and so on. It works with every number.

    Presenting the Effect

    We chose to present this effect as an interactive, online experience, but you can easily adapt it to a live performance. We teach you two ways to present this, either as a mind-reading effect or a prediction. In a mind-reading effect, you're asking the spectator to think of something that you can't possibly know, and you're somehow able to "read their mind." In a prediction, you open, write down, predict, a future occurrence.

    Mind Reading

    You can present this as a mind-reading effect by asking the spectator to secretly pick their number and not to let you know. And after they go through the process of resulting in six, you ask them to concentrate on their number.

    At this point, you can emphasize how you asked them to apply some random steps that employed a clock and that they are an unknown number. At this point, you can pretend to "read" their mind and then tell them that they are thinking of "six."

    A Prediction

    You can turn this into a prediction effect by writing down the number "six" ahead of time on a piece of paper and folding it up. For even more security, you can place this folded piece into an envelope and seal it.

    At the beginning of the routine, you bring out your folded piece of paper and set it down in plain view. You state that this is a "prediction." You then bring out a clock or point out your watch face and ask the spectator to go through the procedure of the trick.

    In the end, the spectator will be thinking of the number "six." At this point, you can ask the spectator to open the note and read your prediction.