[perko90]

At Philly, the new Convention chart proposal passed!
http://www.acbl.org/...vention-charts/

What do you think are going to be the most popular changes to systems/bidding based on these changes?

Here's my list:
1) Multi 2♦
2) Transfer Walsh *** my personal favorite change and biggest reason to celebrate!
3) Kaplan Inversion (after 1♥, the 1♠ and 1NT responses are flipped)

Then to a lesser extent ...
4) Multi-way forcing 1♣ systems in general (Polish, Carrot, Tangerine, etc.) combined with some sort of transfer responses (T-Walsh, for ex.)
5) Canape'- responder now can bid next step as an artificial negative

And then just speculation ...
6) Forcing 1♦ systems? A 1♥ response doesn't have to be natural any more.
7) Forcing 1NT that promise invite or better values?

What else? I don't know a lot of what's out there because I've always tried to restrict my theoretical wanderings to GCC legal topics.

[hrothgar]

There is (pretty much) no change to the rules wrt multi 2D
Still banned in anything less that 7 boards.

As Adam pointed on on bridgewinners, you could play a strong multi 2D opening (showing 10+ HCPs)
Not sure how popular that would prove to be...

[neilkaz]

On what lowest level card will T-Walsh be allowed?

[hrothgar]

neilkaz, on 2018-March-29, 15:55, said:

On what lowest level card will T-Walsh be allowed?

Open (I believe)

I didn't see any language permitting this on the two lower level charts and it doesn't appear to be banned in the Open Chart

[steve2005]

perko90, on 2018-March-29, 08:57, said:

And then just speculation ...
6) Forcing 1♦ systems? A 1♥ response doesn't have to be natural any more.

This was always allowed assuming 1D promised 15 hcp.

[TomReynold]

steve2005, on 2018-March-30, 03:53, said:

This was always allowed assuming 1D promised 15 hcp.

True. I play 1D=15+ 1D-1H (6-9 or 14-15), 1D-1S (0-5) and 1D-1NT and above Symmetric Relay. The system is GCC under the old method and the only pre-alert is the canapé 1H and 1S opening which is not necessary to play.