Over 1NT - dble:

• Over 1NT - dble:

• a suit bid shows at least 4-4 in two (touching) suits

• 2 =  + 

• 2 =  + 

• 2 =  + 

• 2 =  + 

• Note that, when responder holds a flat 4-3-3-3 hand with little hope that 1NT doubled will succeed, he probably does best to describe it as a 2-suited hand and bid accordingly. Quite often he will avoid a double if opener chooses one of the suits that he shows.