[shugart24]

If you open 3 suited hands with a 2C or 2D bid, what techniques do you have for searching for slam ? For us, opener shows the shortness (after an ask) by bidding one under the shortness whereupon Responder can bid the shortness as a control asking bid. I think there must be other, perhaps better ways, as just knowing controls and shape may not be enough for Responder to make the right decision. I appreciate any responses

[Kungsgeten]

Some sort of scanning for locations of controls is usually used in relay methods.

Some USA experts plays the "Mulberry" convention after the Precision 2D or Flannery 2D and shape has been resolved. This is very similar to relay methods, but seems to be favoured by pairs playing more "natural" methods.

[Shugart23]

2c(3suited)-2d( where is shortness, interested in game or more)-3D(maximum hand,heart shortness),……?

[johnu]

2NT response asks for suit below the short suit like in your usage.

Bidding the short suit asks for range and shape.
1 step - Minimum, 4441
2 steps - Maximum 4441
3 steps - Minimum 4450
4 steps - Maximum 4450

Bidding the short suit again asks for controls

After minimum response
1 step - 3 or fewer controls
2 steps - 4 controls
3 steps - 5 controls
etc

After maximum response
1 step - 4 or fewer controls
2 steps - 5 controls
3 steps - 6 controls
etc.

Under some circumstances a cue bidding sequence can be started. The big problem is that you might not be able to set your suit fit until the bidding gets very high which is a weakness of unspecified 3 suited opening bids.