[zasanya]

I have to organize an all play all pairs tournament for 26-30 players Are charts for Hovel movements of boards and players available on line for 13,14,15 tables?If yes would be most grateful if a link is provided.If anyone has them would be most grateful if I get them by email.

[david_c]

It must be possible, but I've never seen a movement for that many rounds.

If you can't find one, what you can do for 14 tables is play two full 7-table Howells, followed by a complete Mitchell (with all the players from one Howell sitting in one direction, and all the pairs from the other Howell sitting in the other direction). That gives you an all-play-all, even if a real Howell movement would be preferable.

A similar thing works for 13 or 15 tables: say for 13 tables, play two 6 1/2 table Howells. In each round there are two pairs which "sit out", but actually you can have these two pairs play each other instead. Note that these pairs would be scheduled to meet on the first round of the Mitchell movement. So you can just skip the first round of the Mitchell. That way you get an all-play-all with no sit-outs.

If your event is split into two sessions, then this method has a distinct advantage over a complete Howell: the first session uses a different set of boards to the second session, so players are able to discuss boards in the break.

[blackshoe]

26-30 players, or 26-30 pairs? the former is about 7 tables, give or take.

You could try google, but I didnt find anything for more than 7 or 8 tables.

Hallen, et.al.'s Movements: A Fair Approach may give movements for that many tables. Not sure.

[zasanya]

26-30 pairs it is.How does one decide a single winner?

[FrancesHinden]

Do you want a full movement for 26-30 pairs (29 rounds with 30 pairs), or what is commonly known as a "3/4 Howell", an incomplete Howell movement for any number of tables in 12 or 13 2-board rounds, giving a single winner from a normal evening?

[blackshoe]

A 3/4 Howell won't be all play all.

I'm not sure, but I think David's solution will work, provided you arrow-switch the Mitchell.

[zasanya]

FrancesHinden, on Jun 13 2007, 11:30 AM, said:

Do you want a full movement for 26-30 pairs (29 rounds with 30 pairs), or what is commonly known as a "3/4 Howell", an incomplete Howell movement for any number of tables in 12 or 13 2-board rounds, giving a single winner from a normal evening?

Frances I need a full movement for 26-30 pairs.To get over the time constraint we thought we could have 1 board per round.The software we have generates charts for 15 table Howell but maximum limit for number of rounds is 13.
David's solution seems workable.So we will try that if the director agrees.Otherwise we will make do with a scrambled Mitchell with arrowhead switch.
I sincerely thank all for their replies.

[skjaeran]

Here's the starting positions for 13, 14 and 15 tables Howell movement.
The numbers from left are: Table no, NS, EW, Boards

13 tables:
1 26 1 1
2 16 11 2
3 19 8 3
4 15 12 4-5
5 18 9 6
6 2 25 7-8
7 24 3 9-10
8 17 10 11-13
9 21 6 14-16
10 14 13 17-18
11 20 7 19
12 22 5 20-24
13 4 23 25

14 tables
1 28 1 1
2 23 6 2-3
3 22 7 4
4 17 12 5
5 26 3 6-10
6 20 9 11
7 18 11 12-13
8 19 10 14-15
9 27 2 16
10 25 4 17-19
11 8 21 20
12 16 13 21
13 24 5 22-24
14 14 15 25-27

15 tables
1 30 1 1
2 19 12 2
3 29 2 3
4 24 7 4-5
5 11 20 6-8
6 18 13 9-13
7 27 4 14-17
8 26 5 18
9 17 14 19
10 22 9 20
11 28 3 21
12 23 8 22
13 16 15 23-26
14 21 10 27-28
15 25 6 29

Boards are described as series number. With 2 boards per round, 3 equals boards 5-6.
When several series are allocated to a table in round 1, they're supposed to play the first and deal the rest.
Making guides, remember that every pair (except the highest number) follows the pair wiht the preceding number (8 follow 7, 1 follows the 2nd highest).

[zasanya]

skaeran, on Jun 14 2007, 07:29 AM, said:

Here's the starting positions for 13, 14 and 15 tables Howell movement.
The numbers from left are: Table no, NS, EW, Boards

13 tables:
1 26 1 1
2 16 11 2
3 19 8 3
4 15 12 4-5
5 18 9 6
6 2 25 7-8
7 24 3 9-10
8 17 10 11-13
9 21 6 14-16
10 14 13 17-18
11 20 7 19
12 22 5 20-24
13 4 23 25

14 tables
1 28 1 1
2 23 6 2-3
3 22 7 4
4 17 12 5
5 26 3 6-10
6 20 9 11
7 18 11 12-13
8 19 10 14-15
9 27 2 16
10 25 4 17-19
11 8 21 20
12 16 13 21
13 24 5 22-24
14 14 15 25-27

15 tables
1 30 1 1
2 19 12 2
3 29 2 3
4 24 7 4-5
5 11 20 6-8
6 18 13 9-13
7 27 4 14-17
8 26 5 18
9 17 14 19
10 22 9 20
11 28 3 21
12 23 8 22
13 16 15 23-26
14 21 10 27-28
15 25 6 29

Boards are described as series number. With 2 boards per round, 3 equals boards 5-6.
When several series are allocated to a table in round 1, they're supposed to play the first and deal the rest.
Making guides, remember that every pair (except the highest number) follows the pair wiht the preceding number (8 follow 7, 1 follows the 2nd highest).

Thank you sir but May I have a little more clarification regarding board movement?
Take 14 table movement.In the 1st round on table 5 Pair No 26 sits N/S and pair no 3 sits E/W play deal no 6 and also deal board 7 8 9 10 but dont play them.In the next round what happens to the boards?AmI right in assuming that board 6 moves to table 4; board 7 is kept on table 5;and board 11 joins 8,9,10 as boards not to be played in 2nd round?

[skjaeran]

zasanya, on Jun 14 2007, 05:24 PM, said:

Thank you sir but May I have a little more clarification regarding board movement?
Take 14 table movement.In the 1st round on table 5 Pair No 26 sits N/S and pair no 3 sits E/W play deal no 6 and also deal board 7 8 9 10 but dont play them.In the next round what happens to the boards?AmI right in assuming that board 6 moves to table 4; board 7 is kept on table 5;and board 11 joins 8,9,10 as boards not to be played in 2nd round?

All tables play the boards in increasing number, going to series 1 after the highest numbered series. Your assumptions regardig board movement is correct.

The best is to make a table with information on NS and EW pair to play and which boards is to be played for each consecutive round for each table.
Put in information for the pairs about movement after the round (NS move to table x as NS/EW, EW move to table y as NS/EW). Boards moves to table z.

[zasanya]

skaeran, on Jun 14 2007, 02:26 PM, said:

zasanya, on Jun 14 2007, 05:24 PM, said:

Thank you sir but May I have a little more clarification regarding board movement?
Take 14 table movement.In the 1st round on table 5 Pair No 26 sits N/S and pair no 3 sits E/W play deal no  6 and also deal board 7 8 9 10 but dont play them.In the next round what happens to the boards?AmI right in assuming that board 6 moves to table 4; board 7 is kept on table 5;and board 11 joins 8,9,10 as boards not to be played in 2nd round?

All tables play the boards in increasing number, going to series 1 after the highest numbered series. Your assumptions regardig board movement is correct.

The best is to make a table with information on NS and EW pair to play and which boards is to be played for each consecutive round for each table.
Put in information for the pairs about movement after the round (NS move to table x as NS/EW, EW move to table y as NS/EW). Boards moves to table z.

Thank you sir