Dutch Two-Bids (Muiderberg)

Opening 2 or 2 shows 6-10 HCP with 5+ cards in the major and 4+ cards in an unspecified minor.

Responses:

• Single Raise = to play, may be weak
• Double Raise = to play, may be weak or strong
• 3 = asks opener to pass with clubs or correct to 3
• 2NT = game try, asks for minor