Effect : – Performer displays a sheet of paper, with a grid of 16 squares (4 x 4) alternately marked with Noughts and Crosses. A spectator freely selects the noughts or crosses.
The paper is folded, and a single cut given with a pair of scissors. When opened out, all the squares with the selected design are intact, joined together in a lattice pattern, while all the squares of the other design have been cut away. You have cut away 8 selected squares out of a sheet, with just one straight cut.