Efraimsson and Zack Einarsson plays as follows: 1♣ 8-9 or 16+ 1♦/♥/♠ 10-15 4+ suit 1N 11-16 2♣ 10-16 5+ suit 2♦/♥/♠ 5-10 5+ suit 2N 5-10 55+ in ♦ and another suit After 1♣, the responses are: 1♦ 0-7, weak opener must pass 1♥ 8+ 4+ suit, weak opener may bid 1♠, 1N or 2♥ 1♠ 8+ artificial and forcing, weak opener bids 1N 1N 8+ exactly 4 spades 2♣/♦/♥/♠ 5-10 5+ suit This structure is obviously good enough that they could place second in the 2011 European mixed championships. :) Jan Eric Larsson