Their disagreement would seem to come from the fact that Rainer doesn't want to play at the three level, (if you need to go that high you might as well take a shot at 4 because that you can do without giving information) but Rik finds it acceptable. If we start worrying about information leakage, we should get the advantages to all our 1M - 2"M" sequences, because it's not worth it to transfer the problem away from drury just so that it exists somewhere else. One way to do that is Pass - 1M - ? 2♣ = 8-9 points, 3+SUPP 2♦ = 10-11 points, 3+SUPP 2M = 6-7 points, 3+SUPP 1NT = can have 4-5 points, 3SUPP 3M = 4-5 points, 4SUPP Quick simulation showed that if you have 10+ points in passed hand and 4cSUPP, for 4M not to be worth the shot partner needs to have worse hand than you. (or just 4 cards for opening) Transfering this information to other sequences we have the rebids Pass - 1M - 2♦ - 2M - 4M = I had 4+SUPP Pass - 1M - 2♣ - 2♦ = Do you have 4+SUPP Pass - 1M - 2M - 4M = here I'm gonna need a little extra strength anyway because dummy has less entries, so no need to ask how long the SUPP is - J