1D - (1H) - X
My reading of the blue book is that the double needs to be alerted, although I’ve not witnessed this at the table. But I assume that’s correct.
I was taught that this does not necessarily promise four spades, but partner can be justified as bidding as though it does. Does this still require an alert?
Comments
This sequence may be an announcement: "spades".
The last option is the modern treatment of a "takeout" double but few players announce.
The EBU Regulation Committee meets on Monday (23 March) and this issue may be resolved in new rules on alerting/announcing, which will be effective from later in the year.