Hi

Set 1, Board 2: Sometimes I just forget to ad contracts. I think 5NT is worth about 20.
Set 2, Board 7: Yes, I forgot 1S it seems. Should be worth about 90.
Set 5, Board 4: Well, you have always 9 in NT if the oponents cant take 5 D tricks or more. In 4S you are always down with a D lead.
Thanks for asking about scores. I may forget a contract or even give a wrong score (eh, me???)
