🚀 go-pugleaf

                NORTH
                S:5
                H:85
                D:AK7
                C:AK85432
       West                East
       S:KT7               S:86432
       H:9                 H:Q762
       D:QT83              D:J62
       C:QJT97             C:6
                SOUTH
                S:AQJ9
                H:AKJT43
                D:954
                C:
  
The contract is 7H, make the contract against best defense.
  
Lets assume a club is led for the purposes of this analysis.
  1. win Ac, pitch a diamond
  2. lead Kc!
There are now three cases:
  A. east trumps
  B. east pitches a spade
  C. east pitches a diamond
Variation A:
  3. overruff
  4. As
  5. Q/Js ruffing in dummy when west covers
  6. finesse Qh
  7. draw trumps
  8. claim 
Variation B:
  3. ruff Kc!
  4. Q/Js ruffing in dummy when west covers
  5. finesse Qh
  6. play winning spades
  7. Ad
  8. club ruff
  9. Kd
 10. claim with AKJ of trump and the lead in dummy
Variation C:
  3. pitch 9s     
  4. finesse Qh
  5. Ad
  6. finesse Qh
  7. run trumps
  8. the four card ending is:
                                                     North
                                                     S:5
                                                     H:
                                                     D:K7
                                                     C:8
                                             West
                                             S:KT
                                             H:
                                             D:Q?
                                             C:?
                                                      South
                                                      S:AQJ
                                                      H:
                                                      D:5
                                                      C:
     West must part with one of his minor
     suit stoppers.
  9. play Kd followed by other minor suit winner squeezing west again.
  
Other opening leads by west set the contract. South always needs four entries
to dummy to make the contract. A club lead gives him one he didnt have before.
A diamond or spade leaves him with only three. At first thought a heart lead
should allow declarer to make his contract also because the free heart finesse
means he now only needs three entries. Unfortunately upon careful thought,
South now has to commit himself to variation B or C before east does and
consequently goes down anyway. The order of using dummy's entries is      
dependent upon what east pitches on the clubs. So if east doesnt pitch on
the clubs before north uses up one of his entries, the contract will be set.
  
In my opinion this was the most difficult problem I've ever seen judging
by the length of time it took me to solve. And I saw all four hands!!
I hope the problems dont get any tougher than this. I wont be able to
handle them. And since I never give up in any case, I'll be wasting entire
evenings which I wont appreciate.