Posted 2022-August-09, 05:46
Yes that's an annoying issue.
GIB doesn't quite understand that a t/o double can also be 18+ almost any shape. It's a bit inconsistent because sometimes it will pass your second bid with shortness in your suit and length in another suit, but generally it's good advice not to double without support for all unbid suits, or at least the unbid majors. With this hand I think it's practical to overcall 4♥. You can also start with 2♥.
FWIW I wouldn't double with this hand opposite a human partner, either.
The world would be such a happy place, if only everyone played Acol :) --- TramTicket