Hi all I was the south in this hand. To clarify several issues here. 1) I don't consider myself "expert" 2) Should be taken in account that partner doesn't play anything special in slam bidding. e.g. help suit slam try, 3) This is a casual and extremely passive partner. 3♠ would show A,K,Single or void in ♠ , but 3♦ would show help suit game try since i didn't bid it and opponents didn't bid ♠ couldn't he figure out that I have ♠? P.S. I do agree that the question shouldn't be asked here.