<p><a href="http://www.baronbarclay.com/rainbow" rel="nofollow"><em>Rainbow</em> movements</a> have individuals remaining a single direction, but only work for a number of tables that is a prime number. If you had 'Pros' sitting North and East, and 'Ams' sitting South and West, then you can also switch partners once each round. My copy of <strong>Duplicate Bridge Direction</strong> by <em>Alex Groner</em> (1977)  describes these in <strong><em>Chapter 7</em></strong> and lists detailed movements for several possible table numbers in <strong><em>Appendix F</em></strong></p>

<p><a href="http://www.bridgeguys.com/Conventions/movements_for_bridge.html" rel="nofollow">The Bridge Guys</a> provide sample table cards for numerous movements, including  <a href="http://www.bridgeguys.com/pdf/Movements/IN/20_player_individual_guide_card_20_30boards.pdf" rel="nofollow">a 5 table Rainbow Individual Movement </a>.</p>

CC BY-SA 3.0
2016-02-19T22:26:17.293Z
2016-02-19T23:52:46.403Z
2016-02-19T23:52:46.403Z
Forget I was ever here
<p>Hallén, Hanner &amp; Jannersten in their &quot;Movements - a fair approach&quot;, has complete &quot;individual Mitchell&quot; movements for 5, 7, 8, 9, 11, 12, 13, 15, and 16 tables; and a hack that makes 10 and 14 work for 9/13 rounds.(1)  In each of those, each direction moves on a different schedule; so every round will have a different N, E, S, and W at each table (in most, but not all, N stays stationary).  Play 2 board rounds, and you can swap S and W for the second board.</p>
<p>The &quot;rainbow&quot; movement (they only use that term for the ones that do swap three ways, it's a &quot;regular individual Mitchell&quot;) works for any table not divisible by 2 and by 3 (which for reasonable table counts is &quot;prime number&quot;, but according to them, 25 will work :-):</p>
<p>They have fairly complicated &quot;irregular&quot; movements for 8, 9, (especially) 12, 15, and 16; however in each the four directions stay in their &quot;lanes&quot; and meet different players at the other three seats.</p>
<p>I have not seen those built into ACBLScor or other scoring programs; frankly, even finding the book these days is a bit of a challenge.</p>
<p>Unfortunately, they do not explore &quot;individuals with two groups of players, who only play facing someone of the other group&quot; (which is why this answer discusses 4 groups).  They only have the (I would guess more expected) case where &quot;individuals with two groups of players, who only play at tables within their group&quot;.</p>
<p>(1) &quot;Appendix the last 4 players against the 4 stationaries; for 14, the &quot;rainbow&quot; movement has to change to have North be no longer stationary (go down 2 tables/round&quot;.  For a 600 page book, their descriptions can be - shall we say &quot;cryptic&quot;?  I'd have to again, see it written out.  The 6 table answer is &quot;do something else to solve the problem you have&quot; - which isn't the problem we have here.</p>

CC BY-SA 4.0
2024-07-14T22:39:38.660Z
2024-07-14T22:39:38.660Z
Mycroft
<p>I'm interested in whether anyone knows of bridge movements for individual events in which the players are split (by experience) into "pro"s and "am"s. Thus in each partnership there is a pro player and an am player. </p>

<p>I'm aware of collections of individual movements, but none of them seems to enforce this split. </p>

<duplicate-bridge>
Bridge game individual movement split between "Pro"s and "Am"s
Jamie Radcliffe
# Bridge game individual movement split between "Pro"s and "Am"s

(Asked by: username_0 on 2016-02-19)

I'm interested in whether anyone knows of bridge movements for individual events in which the players are split (by experience) into "pro"s and "am"s. Thus in each partnership there is a pro player and an am player.

I'm aware of collections of individual movements, but none of them seems to enforce this split.

**Tags:** duplicate-bridge


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## 2 answers

### Answer by username_1 on 2016-02-19. Score: 2 | Accepted answer

[*Rainbow* movements](http://www.baronbarclay.com/rainbow) have individuals remaining a single direction, but only work for a number of tables that is a prime number. If you had 'Pros' sitting North and East, and 'Ams' sitting South and West, then you can also switch partners once each round. My copy of **Duplicate Bridge Direction** by *Alex Groner* (1977) describes these in ***Chapter 7*** and lists detailed movements for several possible table numbers in ***Appendix F***

[The Bridge Guys](http://www.bridgeguys.com/Conventions/movements_for_bridge.html) provide sample table cards for numerous movements, including [a 5 table Rainbow Individual Movement](http://www.bridgeguys.com/pdf/Movements/IN/20_player_individual_guide_card_20_30boards.pdf) .


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### Answer by username_2 on 2024-07-14. Score: 0

Hallén, Hanner & Jannersten in their "Movements - a fair approach", has complete "individual Mitchell" movements for 5, 7, 8, 9, 11, 12, 13, 15, and 16 tables; and a hack that makes 10 and 14 work for 9/13 rounds.(1) In each of those, each direction moves on a different schedule; so every round will have a different N, E, S, and W at each table (in most, but not all, N stays stationary). Play 2 board rounds, and you can swap S and W for the second board.

The "rainbow" movement (they only use that term for the ones that do swap three ways, it's a "regular individual Mitchell") works for any table not divisible by 2 and by 3 (which for reasonable table counts is "prime number", but according to them, 25 will work :-):

They have fairly complicated "irregular" movements for 8, 9, (especially) 12, 15, and 16; however in each the four directions stay in their "lanes" and meet different players at the other three seats.

I have not seen those built into ACBLScor or other scoring programs; frankly, even finding the book these days is a bit of a challenge.

Unfortunately, they do not explore "individuals with two groups of players, who only play facing someone of the other group" (which is why this answer discusses 4 groups). They only have the (I would guess more expected) case where "individuals with two groups of players, who only play at tables within their group".

(1) "Appendix the last 4 players against the 4 stationaries; for 14, the "rainbow" movement has to change to have North be no longer stationary (go down 2 tables/round". For a 600 page book, their descriptions can be - shall we say "cryptic"? I'd have to again, see it written out. The 6 table answer is "do something else to solve the problem you have" - which isn't the problem we have username_1.


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