[rwbarton]

After

1♥ - 1♠
2♣

does anyone play xyz-like followups:

2♦ = puppet to 2♥, to play or for invite
2♥ = artificial GF
2♠+ = ?

Any significant advantages or disadvantages over regular 4SF?

[grucha78]

Recently I saw following solution:
2♦ - puppet to 2♥,sign off in ♥ or ♠ or any GF
2♥/♠/NT/3♣ - invite

Pawel

[rogerclee]

[14] Special 3rd and 4th suit auctions
- 1H-1S-2C-2D = Weak preference to 2H or art game force
- 1H-1S-2C-2H = Constructive preference

from one of Fred's old convention cards. IMO it's very useful to be able to show 2 different kinds of preferences in either a natural or strong club system (where "strong preference" in a strong club system can be as much as 12-13 depending on how light you open).

[rbforster]

rogerclee, on Apr 17 2010, 12:24 AM, said:

IMO it's very useful to be able to show 2 different kinds of preferences in either a natural or strong club system (where "strong preference" in a strong club system can be as much as 12-13 depending on how light you open).

Agreed. Me and my partner played something like this in Bart situations, i.e.

1♠-1N(f)-2♣

2♠ weaker 3 card limit raise
3♠ stronger 3 card limit raise
2♦ artificial...2♠ weak preference
2N stronger non-fitting invite

Certainly one could prioritize the 2 different preference ranges instead of keeping more of limit raises low.