Roman 2D
			--------

"Ancient Times"
---------------

In the original Roman system, a 2D opening showed any 4441 hand 
with 17-20 hcp.  The responses were the same as in their mini-
Roman 2C opening: new suits were signoffs (opener runs if that
suit is their singleton), and 2N is their strong inquiry (opener
rebids their singleton).


"Modern Adjustments"
--------------------

Today, most players play that a 2D opening shows any 4441 hand 
with 16-20 hcp.  Some include 5440 hands, where the five carder
is a minor. Also, some players have decided that after the
inquiry: 2D - 2N; opener rebids in the suit below their singleton:
3C (diamond), 3D (heart), 3H (spade), 3S (club). 


"Blue Club"
-----------

The Blue Club system uses the 2D opening to show any 4441 hand
with 17-24 hcp.  2S is an attempted signoff; 2N shows any bad 
six card suit; and 3 of a suit shows a good six carder (headed 
by at least AJ).  2H is used an inquiry; the rebids are:
2D - 2H; 
	2S  17-20, either major singleton
	2N  17-20, club singleton
	3C  17-20, diamond singleton
	3D/3H/3S/3N  21-24, singleton in next suit (3N = clubs)

After the inquiry, responder can signoff at any time except in 
the relay suit (opener's short suit, except 2N over 2D-2H; 2S
is considered the relay).  

For 17-20 hands, (except for the 2D-2H; 2S auction... see below)
  The first relay ask asks for the range: 
	first step	17-18
	second step	19-20
  The second relay asks for controls
	first step 	3
	second step	4 
	third step	5, etc.
  The third relay asks for the number of queens:
	first step	0
	second step	1
	third step	2

For 21-24 hands,
  The first relay asks for the number of controls
 	first step	5
	second step	6
	third step 	7, etc
  The second relay asks for the number of queens.


Over the 2S rebid, 2N is used as a further inquiry:
2D - 2H;
2S - 2N;
	3C  17-20, heart singleton.  3H is used as a further 
	    inquiry into the strength: 3S (17-28), 3N (19-20).
	3D  17-18, spade singleton
	3H  19-20, spade singleton
Over these response, the next relay asks for controls; then
another relay asks for number of queens.


Examples of auctions:
	2D - 2H;    2H is inquiry
	2S - 2N;    2S 17-20, major singleton; 2N relay
	3D - 3S;    3D shows 17-18 spade singleton; 3S relay
	4H - 4S;    4D (4th step) shows 6 controls; 4S relay
	5C - 7N     5C (2nd step) shows 1 queen; 7N places the contract


	2D - 2H;    2H inquiry
	2S - 3D     2S 17-20, major singleton; 3D signoff

	2D - 2H;    2H inquiry
	2S - 2N;    2S 17-20, major singleton; 2N relay
	3C - 3H;    3C heart singleton; 3H relay
	3N - 4H;    3N 19-20; 4H relay
	4N - 6D;    4N (2nd step) shows 4 controls; 6D places the contract

	2D - 2H;    2H inquiry
	2N - 3D     2N 17-20 club singleton; 3D places the contract

	2D - 2H;    2H inquiry
	3C - 3D;    3C 17-20 diamond singleton; 3D relay
	3H - pass   3H 17-18, pass places the contract

	2D - 2H;
	3D - 3H;    3D 21-24 heart singleton; 3H relay for controls
	3N - 4H;    3N (2nd step) 6 controls; 4H relay
	5D - 6C     5D (4th step) 3 queens; 6C places the contract