DONT stands for Disturb Opponents No Trump. It is a bidding convention for defense to a 1 no-trump opening. With DONT, a two-level suit overcall of a 1 NT opening shows the suit bid and one higher suit. Normally the advancer would pass to accept the suit bid or bid the next step up to ask for the overcaller’s other suit.
East deals, North/South vulnerable, IMP scoring
Notes on North/South agreements:
1. The 2♣️ bid is DONT—showing a ♣️ suit and an unspecified higher suit.
2. The 2♠️ bid is rejecting the overcaller’s suits. It says something like “My suit is better for us than either of your suits.”
3. North/South are using “upside-down carding”. This means that a low card is encouraging and high card is discouraging.
South leads the A♠️ against East’s 3♥️ contract. Partner (North) plays the 3♠️ and declarer contributes the 6♠️.
What is the significance of North’s 3♠️ play?
How should South continue?
