[benlessard]

our 1D is always 4 and unbalanced 11-22, could be 4D and 5C or any 4441 with 4D

after 1H relay our continuation go pretty well that i think it might be good to play NF responses since with 95% of GF hand its better to simply relay. Opener already has made 1 natural bid and is shape is often very easy to describe. While responder 1S response (or much worse 2C) and opener rebid take enough space than a adequate description is impossible. I dont expect the gain to be great but ive never played 1S as non-forcing so i dont know.

1D-----???

1H = relay (at least 3H if weak) usually a D tolerance
1S = 5S non forcing
1Nt = 5H non forcing *(or maybe forcing)
2C = 6C non forcing
2D D raise
2H nat *(or maybe both M if 1Nt is forcing)
2S Nat

The main advantage is that we will be able to play 1Nt.
The 2nd advantage is that a further 2H is a GF relay

1D----1H
1Nt (showing 6D)-----2C is inv,2D is weak 2H is GF relay

1D----1H
1S (D+C)----1NT is inv,2m is weakish 2H is GF

1D----1H
2C (S+D 12-14 or GF)-----2 pointed is to play, 2H GF

1D----1H
2D (D+S 15-17)-------2H GF


before it used to be
1D----1S
??

1Nt = clubs
2C = 6D or reverse H+D
2D = 5D+4H
2H = 12-14 or GF S raise
2S = 15-17 raise
rest is GF showing very precise hands

now it can be
pass = dead minimum or only 2S
1Nt = s shortness NF tend to show 4H.
2C = nat tend to show 5
2D = nat 6D
2H = H reverse or 12-14 or GF S raise
2S = slight extras
rest is GF not so precise hands