Dutch 2/2

2/2 opening showing 5 - 10 HCP and 5 card in the opening suit and a side suit in minor. You can decide if you use 4+ or 5 in the minor suit. 5-5 is more safe, but 5-4 is more frequently.

Response:

• 2NT: Asks for sidesuit. After 3/3, 3 in the opening suit is invitational.
• New suit: Not forcing.
• 3 in opening suit: Pre-empt.