Polish 2 Diamonds


5-5 major-minor with 6-10 HCP
for example:
AKxxx
x
J10xxx
xx

or


QJxxx
xx
x
QJ9xx

After 2D opening, partner responds as follows

2H/S weak, 2-3 card support in that suit
2NT = strong hand - asks for more info
3C/D = to play with 2-3 cards
3H = Weak, major suit fits


In response to the 2NT bid, opener bids
3C = 5 clubs
3D = 5 diamonds 5 hearts
3H = 5 hearts 5 spades
3S = 5 spades 5 diamonds

In response to the 3C bid, partner can ask for the major by bidding 3D

2D 2NT
3C 3D(relay)

3H = 5 hearts 5 clubs
3S = 5 spades 5 clubs