Of course they are!  You just lead towards the AQ or KJ or some such holding, and, when fate is kind, an extra trick materializes.  But, if they can, experienced players will avoid the whims of fate, as in this deal.

                                                    Both Vulnerablle

                                                    South   West    North   East

                                                    1♠          Pass    3♠        Pass

                                                    4♠          Pass    Pass   Pass

 

 

West leads the ♥Q, and when Dummy goes down you see that the two hands have the dreaded mirror distribution.  That’s not good … no ruffs in either hand … no pitching of losers on side-suit winners.  You can see a certain loser in Hearts and another in Diamonds.  So, if 4♠ is to make, then Declarer must avoid losing two Clubs.  There are various ways to finesse in Clubs, care to list them?

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