Performer displays a square board with five holes. A silk is pushed through one of the corner holes. The board is passed behind the performer s back, and the silk is found to have jumped to an adjacent corner. This is repeated several times and the spectators suspect the board is being turned behind the performer s back. The performer passes the board behind his back one more time, and the silk has now jumped to the middle.
Complete with special "mechanical" board and the Silk.