This idea originated from H.O. Worger (Great Britain) and is used to add one extra set of board to any movement with a prime number of tables. The standard movement is set up and conducted in the normal way. An extra set of boards then roves through the movement (like the rover pair) replacing the set of boards currently in play at the table at which the set arrives. The set starts at table 1 and then goes up two tables at each change. For the last round the players play the set of boards that they did not play on the round in which they played the rover boards. They play them against the same opponents against whom they played the rover boards.
For example with a 7-table Mitchell with 3 boards per table (1-3 on table 1, 4-6 on table 2, etc.) the rover set is boards 22-24 which are played on table 1 on round 1 instead of boards 1-3 and then move up two tables at each change (1,3,5,7,2,4,6). The replaced boards return to the movement and move as though they have been played at the table at which they were replaced.
With E-W moving up one table and the boards down 1 table, the last (8th) round sees E-W pairs move:
1 to table 1 playing 1-3
2 to table 3 playing 10-12
3 to table 5 playing 19-21
4 to table 7 playing 7-9
5 to table 2 playing 16-18
6 to table 4 playing 4-6
7 to table 6 playing 13-15
The players can be asked, of course, to note the boards they miss and the opponents against whom they are to play the missed boards.
