This movement is very useful for two session events. The advantage is that all players meet all others, all play the same boards, and the comparisons are at least adequate.
The first session of the event is a standard Mitchell movement Two slightly different methods are used depending on whether the number of tables in the Mitchell is odd or even.
EVEN TABLE MITCHELL
The standard share and relay Mitchell is used with the N-S field meeting the whole E-W field. A switch Mitchell should be used for better comparisons of scores. If the number of rounds is too high for the comfortable completion of the movement, the skip Mitchell should be used and curtailed at a point suitable for the event. This does mean that not all pairs will have met.
The second session of the event will then be a double Howell with the pairs from the N-S field making up one of the Howells and the pairs from the E-W field the other.
The number of rounds in the double Howell will be one less than the number in the Mitchell movement. For example with 10 tables, the first session would be a share and relay Mitchell for 10 tables with 10 rounds. The second session would be a double 5 table Howell that has 9 rounds.
ODD TABLES MITCHELL
A standard odd table Mitchell is set up but no play takes place on the first round. The pairs who do not play each other on this round will meet at table 1 of the double Howell (or the table with the non-existent stationary pairs). Therefore the number of rounds played in the Howell will be one more than that played in the Mitchell.
For example, with 9 tables in the Mitchell the first round is not played and so there are only 8 rounds of play. The double Howell would be a double 5 table Howell with 9 rounds. In the case of 5 tables the standard Double Howells are not applicable because the tables with the stationary pairs are not sharing boards (see double Howell movements). Any one of the following six Howells can be used with another Howell from a different group.
Group A
10-1 5-3 2R 9-4 2-8 2R 7-6
10-1 7-9 2R 2-6 8-5 2R 4-3
Group B
10-1 9-8 6-4 4R 3-7 5-2
10-1 4-3 7-9 4R 2-6 8-5
Group C
10-1 R 5-7 R 4-8 3-2 R 9-6 R
10-1 R 6-8 R 7-2 5-4 R 3-9 R
For example
10-1 5-3 R R 9-4 2-8 R R 7-6
1-10 9-8 6-4 R R R R 3-7 5-2
Note there are two lots of board sharing, apart from board set 1 (i.e. at board sets 2 and 9). As pairs 10 in both Howells are non-existent, there is only one pair at table 1 in both movements so the two pairs "1" play against each other on the first round at table 1 (this is the round skipped at the start of the Mitchell movement). The pairs originally numbered 2 meet on the second round and 3 on the third etc.
