Play Problems
Hand 1
North south play 6Svia 2NT -3C-3S -6S
North
S.A432
H.QJ109
D.A2
C.Q43
.............................
South
S.KJ98
H.AK2
D.K43
C.AK2
..............
Lead QD Plan your play
Hand 2
North South play 6NT via 1NT (strong) -6NT
North
S.AKQ
H.KQ4
D.K9876
C.32
..................
South
S.32
H.A32
D.QJ2
C.AKQ109
Lead is JS Plan your play

Defence...To Cover or not? IN all hands contract is 3NT and you are over dummy.Card ubnderlined is lead by declarer, which card do you play?
1. [J]102
..............K98
2.[10]97
..............AJ6
3. [9]5
.............J42
4.[J]107
..............AQ5
5.K[10]75
...............AJ3
6.[J]1087
..............Q2
7.[9]86
..............Q103
8.[J]4
............A73
9.[8]2
.............K73
10. [9]86
.............KQ3
Sorry people, card in brackets is lead ( don't know how to underline sorry)

Without looking at them too closely, surely you need to see dummy before you can decide whether to cover or not?

Or am I missing something?

I think the way to look at is is the suits in isolation, assuming that they have enough entrys to reach any other hand comfortbaly.The contract will depend on you making the right play.
So assume that they have the tops of the suits but have no chance of setting them up, and that you have the rest but wont be able to knock out their stoppers.