Hi Barry
Perhaps south can still prevail by playing west for three carded club with HHx or Hxx as south can be fairly certain of west holding 4 cards in each major. Win the diamond Q in dummy, come to hand with spade Q and lead low club. If west plays low, dummy plays ten, east wins, dummy wins diamond return and now on club A and club back , K appears from west. If west plays K on low club from south, there’s no problem
Regards
Hi Barry
Perhaps south can still prevail by playing west for three carded club with HHx or Hxx as south can be fairly certain of west holding 4 cards in each major. Win the diamond Q in dummy, come to hand with spade Q and lead low club. If west plays low, dummy plays ten, east wins, dummy wins diamond return and now on club A and club back , K appears from west. If west plays K on low club from south, there’s no problem
Regards