Knot tying problem. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Knot tying problem. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Twist the scarf with a tourniquet and lay it on the table. Cross your arms over your chest. Continuing to hold them in this position, bend over to the table and take one end of the handkerchief alternately with each hand. After the hands are separated, a knot will turn out by itself in the middle of the scarf.

Using topological terminology, we can say that the hands of the viewer, his body and handkerchief form a closed curve in the form of a "three-leafed" knot. When spreading the hands, the knot only moves from the hands to the handkerchief.

An entertaining variation of this puzzle can be demonstrated with a cord, scarf, or tie. Lay, for example, a tie on the table as shown in fig. 22. Take end B with your right hand and ask the spectator to watch closely as you tie the knot. Pass now the left hand under the end of B with the palm down (Fig. 23), and then turn it back, as shown in Fig. 24, and pick up end A. After you spread your arms, you will have a knot on the tie.

Focus The problem of tying knots

Oddly enough, but such movements are quite difficult to reproduce. You can show the trick over and over again to those present, but when they try to do it themselves, the knots will not be tied.

Author: M.Gardner

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