This is a modification and extension of the principles involved in the rover (replacement) Mitchell. This movement works only when there is a prime number of tables (N) in the base. 1 to N-1 tables can be appended to this base, but for practical considerations it is best not to have more than 1/2 N appendix tables. The standard base-movement is set up and conducted as normal: N-S stationary, E-W move up one table at the change, and the boards move down one table. At the appendix table the N-S pair remains stationary. The E-W pair from the appendix table proceeds as a roving pair, replacing an E-W pair at one of the tables in the base. The replaced pair then moves to the appendix table and plays there as the E-W pair. The appendix table always shares boards with the table at which the roving pair is sitting. The roving pair then moves up 2 tables (or down 2 tables) at each change. The replaced pairs continue moving normally and move from the appendix table as though they had played at the table from where they were replaced.
Several appendix tables can be added by his method with each roving pair starting at a different table. A half-table rover can also be accommodated, with it starting at yet another table in the base, and proceeding as a normal rover.
This movement can further be improved with the base movement moving with an American whist movement. (N-S stationary and E-W move up two tables, dropping the boards off one table up). This way the roving pairs will move down one table at each change. Another alternative (slightly better, as there is less congestion) is the inverted whist: E-W up one table and the boards up two tables and the rovers down one table.
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