EHAA NT
Every Hand An Adventure
EHAA uses sound opening 1-bids (four card majors) and 10-12 NT. 2 NT shows 21-24. This means that NT re-bids by the opener must show 13-20 points.
1X : 1Y :
1N = 13-15 HCP
Many EHAA partnerships play some form of check back in this auction
1X : 1Y :
2N = 16-18 HCP
1X : 1Y :
3N = 19-20 HCP
1X : 2Y :
2N = 13-17 HCP
1X : 2Y :
3N = 18-20 HCP
Because the 2N bid has a wide range, it is recommended to play the Wolff Signoff convention, which allows responder to stop the bidding at the three level. In addition, there is another convention with a similar purpose called Stoplight. --