farcar

Depends on your system but Rubensohl is useful here 3C is invitational with Diamonds Else 3D forcing

Got fedup going down in 3NT when other ganes were laydown So I play this 3 any - 3NT - 4C - I have a 6+ card suit, please bid 4D and I will Pass or correct 4D - Stayman, bid 4NT if you don't have a 4+ card major 4H/4S/5C/5D - natural, mild slam try Very useful

5 card Stayman solves this problem 2NT - 3C 3D (no 5 card major but I either have a 4 card major or 3 Spades, or both) 3S (I have 4 hearts but NOT 4 spades!) 3NT I don't have 4 Hearts so I either have 3 or 4 Spades 4S to play in our 5-3 or 5-4 fit, or you can Bid 4H to transfer to 4S