Magician displays a length of Red rope with three Yellow knots on it. A silk is tied to the knot on the right side. He passes it behind his back and the silk jumps on to the knot on the left side. He does it a couple of times and each time the silk jumps from one corner to the other. Finally the silk jumps to the knot in the middle. Everything can be given for examination after the performance.
A Red rope with three Yellow segments, a silk and a fake yellow knot.