[mike777]

(2d)(natural and weak)=2s=(x)

When do you alert the x, when do you not in an ACBL context please, ty in advance.

At the f2f table there was no alert and both myself and my partner failed to ask or look at the opp cc until much later in the auction.

In this case x was some sort of forcing takeout type bid I guess.

[peachy]

In ACBL alert regs, most doubles are not alertable but this would fall into the "highly unexpected" category and therefor IMO clearly alertable.

This double IMO also falls into the "highly insane" category if the meaning indeed is forcing Takeout, but that has nothing to do with your question.