1) 2!s seems to be trying to aim for too small a target, 5 loser hand opposite a raise belongs in game, and since LHO was quiet, we know where everything is, so the play is a little easier 2) do we know its our hand yet, and where are all the spades? almost would think RHO is 2-suited in the blacks, neg double makes sense, and if p is 4/4/3/2 in shape, the correction to diamonds from spades shows our hand decently enough 3) 2 certain tricks, plus headache, and partner is asking us to do something intelligent, okay, we'll out-think ourselves and pass 4) I would think the 2N inquiry would work best, over 3!H, I'm tempted to pass, and over any positive noise, 3S shows where we are 5) 3S is at least a forcing bid (it looks like one) and says we have 'stuff' and length here, seems kinda obvious