This particular movement will run smoothly with two copies of the boards in Board Groups A-E and three copies of the boards in Board Groups F-H, with Table 7 and Table 8 sharing one copy of Board Group G in Round 7, but it's best to duplicate four copies of the boards in advance if one intends to run a Double Web Movement. A Double Web Movement inherits two constraints from the properties of the Web Movement described above. A "One Winner" Movement is a movement in which all entrants are part of the same scoring field, thus producing only one winner -- hence the name. Howell Movements, described below, are by far the most prevalent "One Winner" movements, but they are far from the only "One Winner" movements. There are many situations in which other "One Winner" Movements are better options. Any Mitchell Movements described above "can" become a "One Winner" Movement simply by scoring both directions in one field (one can have a "One Winner" Relay and Bye Stand Michell Movement or a "One Winner" Web Movement, for example). When this is done, every pair must have a separate number. The usual practice is for the stationary (North-South) pairs to retain their pair numbers while the moving (East-West) pairs add the number of tables to their starting table to get their pair number. Thus, in a "One Winner" Mitchell movement with seven tables, pairs 1-7, starting North-South at the respective tables, would be stationary and pairs 8-14, starting East-West at tables 1-7 respectively, would move. However, this movement is not ideal because the weight of opposition is far from balanced. The Scrambled Mitchell Movement changes the direction of play for one or more rounds at most or all of the tables in a "One Winner" variant of a Mitchell Movmenet, customarily achieved by rotating the orientation of the table by one seat position and thus dubbed an "arrow switch" so the stationary pairs do not physically change seats, to diminish this disparity. The pairs that start North-South remain at the same table for the entire session and the pairs who start East-West continue to move after each round, even when they play in the opposite direction. With the introduction of arrow switches, the movement becomes a Scrambled Mitchell Movement. More specifically, one can prepend the word "Scrambled" to that of the specific Mitchell Movement that gets scrambled (for example, a "Scrambled Relay and Bye Stand Mitchell Movement" or a "Scrambled Crisscross Mitchell Movement").