🚀 go-pugleaf

 	Seeing all four hands, make seven Hearts against BEST defense.


                               S 5
                               H 85
                               D AK7
                               C AK85432

	   S KT7                                S 86432
           H 9                                  H Q762
           D QT83                               D J62
           C QJT97                              C 6

                               S AQJ9
                               H AKJT43
                               D 954
                               C --


   It is considerably more difficult than it first appears.  Remember that
the defense can see all four hands also.
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There is a mistake in this problem.  The conditions should state that
a club was led.  Otherwise, the hand can be defeated.

After much thought and trial, I suddenly realized that I had seen this before.
It is a very famous problem, the winner of a competition decades ago.
I don't have access to my reference book, so I can't give any more details.
Since I recall the solution, I will not post it, so as to give others
a chance, but I will add a hint:  there are three distinct ways the play
can go, depending on the defenders' early play.
It is indeed a very difficult one.