chrism, on 2013-November-10, 07:06, said:
While Blackshoe is correct that a literal reading of the definition of "natural" in the ACBL Alert Chart does not include 3-card raises of partner's 5-card major opening (!) I would expect a 100% consensus among both ACBL directors and rational beings - neither of which is a subset of the other- that it is in fact natural. Given that, this is alertable from line 1 of the Alert Chart:
Natural Calls Not Specifically Noted ... Unusual strength, shape, etc.
This is not an unusual strength or shape, so I don't believe that the provision that you quote is the reason why the 2
♥ bid would be alertable. It is a specific shape and strength that is more well defined than many players' direct major raise over a double, but it is neither unusual strength nor unusual shape.
Quite frankly, I don't know whether it is alertable or not. But I alert it. I play transfer advances over doubles with a number of partners, so 2
♦ would be a good raise to 2
♥ while 2
♥ is a "trash" raise to 2
♥. I alert 2
♥, but I have yet to be shown a solid reason why it is alertable.