Okay
declarer has the queen but look at that singleton 
on the table, we must take the
A§
and play trumps, but which
one. Look at the effect of the K
.
This is declarers hand:
ªKx
©A108xxx
¨Axxx
§Q
He
wins the Aand
plays A
and ruffs a
with the now bare Q
cashes
the K§
ditching a
and concedes 2 trump tricks to
your J9 and his 4th
for 1 down.
!Well defended!
Had you switched to a small trump he would have run it to
the Q ruffed a
with dummy's
remaining small trump and made 10 tricks.
