ACBL club game
uncontested auction sequence 1♣ - 1♥ - 2♠
1♥ is T-Walsh showing 4+ in ♠
2♠ shows a 4 card ♠ and a minimum (12-14 HCP) opening hand.
Is 2♠ alertable?
Opponents complained to me about not alerting 2♠ because "In standard, 1♣ - 1♠ - 2♠ shows at least 3 card ♠".
Benefits include:
Plus... it's free!