Dear John,       

Last night, I made a claim and then stated how I would play the
cards.  My claim was accepted by both opponents.  However, my
opponents were new players.  When my right hand opponent faced her
remaining cards, I saw that she had a trump left in her hand of which
I was unaware.  She would have won one more trick if we had actually
played the cards as I had claimed.  My partner had already entered
the score because the claim had been accepted.  Was I obligated to
have the score changed?       Thanks for any help you can give. 

My two cents worth,

By rights, the claim was not contested, so the score may stand and you 
are not required to have the score adjusted, but for newer players upon 
seeing the situation like this, it would probably be a good idea call the director
the first time to point it out so they gain some experience and learn about 
their rights to contest a claim.  Sometimes, newer players have an aversion 
to calling the director for fear of making waves or not wanting to offend 
others at the table.  The purpose of a director is to restore equity if there 
is a problem at the table.   

A word of advice for folks when a claim is made when there are outstanding 
trumps and no indication is made that the trumps will be pulled before other 
cards are played, call the director.  You will be awarded the trick if it is at all
possible you could have scored the trick as director may assume a sub-standard
level of play by the person who made the questionable claim.

John