Another deal from a Bramhall & Cheadle duplicate.
You lead the diamond two against three notrump, declarer plays the jack from dummy, four and three from partner and declarer.
Declarer now plays a low spade, seven from partner, nine from declarer.
How do you defend?
If you win this trick declarer has two entries to dummy to set up and enjoy the spades. However, if you duck then declarer eventually will be held to ten tricks if you discard carefully on the clubs. So, despite your unfortunate lead (a heart would probably hold declarer to nine tricks), you beat all the pairs who defended four spades which easily made eleven tricks.
The full deal was