The convention Extended acceptance after NT can be used after partner 1NT/2NT (NT style) and Jacoby transfers.

Conditions:

• 4 trumps;

•  min or max hand but not very bad HCP.

1N-2♦

?

2♠ - 2=♠

2N - bad doubleton

3♣ - 2=♣

3♦ - 2=♦

1N-2♥

?

2N - bad doubleton

3♣ - 2=♣

3♦ - 2=♦

3♥ - 2=♥

2N-3♦

?

3♠ - 2=♠

3N - bad doubleton

4♣ - 2=♣

4♦ - 2=♦

2N-3♥

?

3N - bad doubleton

4♣ - 2=♣

4♦ - 2=♦

4♥ - 2=♥